WEBVTT - Creature of the Gear

0:00:03.040 --> 0:00:05.400
<v Speaker 1>Welcome to Stuff to Blow Your Mind production of My

0:00:05.480 --> 0:00:14.880
<v Speaker 1>Heart Radio. Hey, welcome to Stuff to Blow Your Mind.

0:00:15.040 --> 0:00:19.160
<v Speaker 1>My name is Robert Lamb and I'm Joe McCormick. Today

0:00:19.280 --> 0:00:21.760
<v Speaker 1>we're gonna be in a way we're continuing on past

0:00:21.800 --> 0:00:27.520
<v Speaker 1>discussions concerning the Wheel. Um, also past discussions concerning uh

0:00:27.800 --> 0:00:32.000
<v Speaker 1>like rolling creatures. But we're gonna be getting more specifically

0:00:32.080 --> 0:00:37.120
<v Speaker 1>into the realm of the gear in this episode. Now,

0:00:37.400 --> 0:00:39.400
<v Speaker 1>I have to say I'm anytime we get into one

0:00:39.440 --> 0:00:43.960
<v Speaker 1>of these discussions, I'm always reminded of a few lines

0:00:44.040 --> 0:00:49.920
<v Speaker 1>from The Omega Man. Uh. In part because it's in

0:00:50.200 --> 0:00:53.840
<v Speaker 1>its own way, it's a weirdly interesting film. Also, I

0:00:53.880 --> 0:00:56.800
<v Speaker 1>probably listened to a bit too much Wide Zombie back

0:00:56.800 --> 0:01:00.880
<v Speaker 1>in high school, uh because there's some or maybe it's

0:01:00.880 --> 0:01:04.319
<v Speaker 1>a Rob Zombie song that that samples this movie. But

0:01:04.360 --> 0:01:08.800
<v Speaker 1>there's this one wonderful line from Anthony zerve Is character says,

0:01:08.800 --> 0:01:12.920
<v Speaker 1>the creature of the Wheel, the lord of the infernal engines. Um.

0:01:13.120 --> 0:01:15.039
<v Speaker 1>What is he talking about the vampires or is he

0:01:15.080 --> 0:01:18.880
<v Speaker 1>talking about about Charlton Heston. He's talking about old Chuck Heston. There,

0:01:18.920 --> 0:01:23.640
<v Speaker 1>he's the This man represents the Wheel and the technology

0:01:23.680 --> 0:01:25.759
<v Speaker 1>of the wheel and all the terrible things that we're

0:01:25.800 --> 0:01:30.600
<v Speaker 1>done with it. Um but wait, I recall the vampires

0:01:30.720 --> 0:01:33.120
<v Speaker 1>using wheeled vehicles. Do they not? Don't they have like

0:01:33.360 --> 0:01:35.959
<v Speaker 1>a sort of zombie mobile. Yeah. I'm not saying it

0:01:36.000 --> 0:01:38.360
<v Speaker 1>makes sense. I'm not saying it's a fair criticism. I'm

0:01:38.400 --> 0:01:42.640
<v Speaker 1>just saying that Anthony Zerva had a really cool voice.

0:01:42.160 --> 0:01:45.319
<v Speaker 1>And uh and when he said these lines, it was like, yeah,

0:01:45.319 --> 0:01:47.039
<v Speaker 1>that sounds cool. I don't know what it means exactly,

0:01:47.040 --> 0:01:49.000
<v Speaker 1>but it sounds pretty cool. You know, it would be

0:01:49.000 --> 0:01:51.800
<v Speaker 1>a really good movie Monster Bug Fight and and both

0:01:51.840 --> 0:01:55.560
<v Speaker 1>are Charlton Heston movies. If you pick the vampires from

0:01:55.600 --> 0:01:59.320
<v Speaker 1>the Omega Man versus the Adam Bomb Cult from the

0:01:59.360 --> 0:02:02.040
<v Speaker 1>Second Plan into the Apes movie, you know, they're they're

0:02:02.040 --> 0:02:06.720
<v Speaker 1>pretty similar. I think, pretty similar morbid humanoids. But I

0:02:06.720 --> 0:02:09.120
<v Speaker 1>would like to see them duke it out, and Charlton

0:02:09.120 --> 0:02:11.600
<v Speaker 1>has to I guess can just watch this time? Yeah?

0:02:11.639 --> 0:02:13.480
<v Speaker 1>What was that beneath the Planet of the Apes? I

0:02:13.480 --> 0:02:17.080
<v Speaker 1>always like that one. As far as any eight movies

0:02:17.120 --> 0:02:20.920
<v Speaker 1>that came after Planet of the Apes, that one, that

0:02:20.960 --> 0:02:23.680
<v Speaker 1>one always appealed to me. I'm not sure why. Uh.

0:02:23.800 --> 0:02:26.919
<v Speaker 1>I remember there's a part where they sing a hymn

0:02:26.960 --> 0:02:30.280
<v Speaker 1>to the atom bomb. Remember yep, they have just a

0:02:30.280 --> 0:02:32.959
<v Speaker 1>big old atom bomb in there that they worship. I

0:02:33.040 --> 0:02:35.519
<v Speaker 1>think it's like a minor key version of all things

0:02:35.600 --> 0:02:39.520
<v Speaker 1>bright and beautiful. But it's interesting all these things are

0:02:39.560 --> 0:02:42.920
<v Speaker 1>connected because we're dealing with with a human technology and

0:02:43.240 --> 0:02:47.079
<v Speaker 1>the idea of worshiping the technology being bound to the technology,

0:02:47.440 --> 0:02:51.400
<v Speaker 1>and and the wheel, and by virtue of the wheel,

0:02:51.520 --> 0:02:54.880
<v Speaker 1>gears and machines being this thing that is particular to

0:02:55.040 --> 0:02:58.440
<v Speaker 1>human beings, something that that that we have created. It's

0:02:58.440 --> 0:03:01.359
<v Speaker 1>a part of our various civilizations. And I think it's

0:03:01.400 --> 0:03:04.720
<v Speaker 1>interesting to think about humans as creatures of the Wheel Empire,

0:03:04.800 --> 0:03:06.440
<v Speaker 1>because of course there have been plenty of cultures and

0:03:06.480 --> 0:03:11.880
<v Speaker 1>civilizations where the wheel, at least in terms of of vehicles,

0:03:11.880 --> 0:03:14.560
<v Speaker 1>has played no practical role. Perhaps that you know that

0:03:14.639 --> 0:03:16.400
<v Speaker 1>you had the wheel as a toy, Perhaps it was

0:03:16.480 --> 0:03:18.720
<v Speaker 1>used as a spiritual aid or device that could serve

0:03:18.760 --> 0:03:21.359
<v Speaker 1>as a metaphor. But then certainly, by the time we

0:03:21.400 --> 0:03:23.480
<v Speaker 1>get to the you know, the age of roads and engines,

0:03:23.880 --> 0:03:28.639
<v Speaker 1>humanity very visibly becomes a people of the wheel. But then,

0:03:28.840 --> 0:03:31.280
<v Speaker 1>as we'll discussed in this episode a little bit, you

0:03:31.320 --> 0:03:34.760
<v Speaker 1>also get into this domain of wheels and gears of

0:03:34.760 --> 0:03:37.600
<v Speaker 1>of wheels doing things that they don't have have anything

0:03:37.600 --> 0:03:41.560
<v Speaker 1>directly to do with vehicles, but it's all about using

0:03:41.600 --> 0:03:44.240
<v Speaker 1>the energy of the wheel to do other things. And

0:03:44.320 --> 0:03:46.440
<v Speaker 1>yet at the same time, and this also makes me

0:03:46.440 --> 0:03:49.480
<v Speaker 1>think of the field of bio memetics bioble metics, of course,

0:03:49.520 --> 0:03:52.680
<v Speaker 1>as when we we say, okay, I have an engineering problem.

0:03:52.720 --> 0:03:55.560
<v Speaker 1>I need to turn to the realm of nature for

0:03:55.600 --> 0:03:57.960
<v Speaker 1>a possible solution, because I've only been working on this

0:03:58.040 --> 0:04:01.240
<v Speaker 1>engineering problem for you know, X amount of time. But

0:04:01.400 --> 0:04:06.800
<v Speaker 1>evolution has been working around similar engineering problems just for

0:04:06.800 --> 0:04:10.360
<v Speaker 1>for millions of years. So perhaps we can we can

0:04:10.440 --> 0:04:13.680
<v Speaker 1>cheat off of nature in that regard. But of course,

0:04:14.440 --> 0:04:16.920
<v Speaker 1>one of the problems is that the wheel almost never

0:04:17.040 --> 0:04:21.600
<v Speaker 1>comes up in nature itself. Gears almost never come up

0:04:21.600 --> 0:04:25.479
<v Speaker 1>in nature. So biomometically, you're not going to turn to

0:04:25.640 --> 0:04:28.359
<v Speaker 1>nature and say, oh, well, well there's a there's a

0:04:28.360 --> 0:04:31.040
<v Speaker 1>solution involving the wheel that I might use. Oh, let's

0:04:31.040 --> 0:04:35.359
<v Speaker 1>look and see how this particular creature uses rotary blades

0:04:35.440 --> 0:04:39.080
<v Speaker 1>to fly that sort of thing. Yeah, you know, I

0:04:39.240 --> 0:04:43.400
<v Speaker 1>actually really enjoy thinking about this in terms of comparing

0:04:43.480 --> 0:04:49.120
<v Speaker 1>animal bodies to different types of machines, machine components, simple machines.

0:04:49.320 --> 0:04:51.520
<v Speaker 1>You know the stuff you learn about in those first

0:04:51.520 --> 0:04:54.200
<v Speaker 1>physics lessons when you're a kid. So you know, you

0:04:54.200 --> 0:04:56.680
<v Speaker 1>know the lever and the inclined plane, and the and

0:04:57.000 --> 0:04:59.200
<v Speaker 1>the pulley and the screw and all that. And I

0:04:59.240 --> 0:05:01.560
<v Speaker 1>feel like when you do this exercise, there is one

0:05:01.720 --> 0:05:07.000
<v Speaker 1>type of simple machine that absolutely dominates the landscape of biology,

0:05:07.040 --> 0:05:10.400
<v Speaker 1>and that is the lever. Biology is full of levers.

0:05:10.480 --> 0:05:14.120
<v Speaker 1>I think you could make an argument that almost all

0:05:14.160 --> 0:05:17.200
<v Speaker 1>of the skeletal muscle in our bodies is designed by

0:05:17.240 --> 0:05:20.520
<v Speaker 1>evolution for the operation of levers. Maybe there are some

0:05:20.600 --> 0:05:23.360
<v Speaker 1>exceptions that aren't occurring to me, but I would say,

0:05:23.360 --> 0:05:25.840
<v Speaker 1>if not all of them, almost all of them. So,

0:05:25.880 --> 0:05:28.800
<v Speaker 1>for example, when you use your bicep to do an

0:05:28.920 --> 0:05:32.040
<v Speaker 1>arm curl, you're curling a dumbbell. You know, the muscle

0:05:32.200 --> 0:05:34.600
<v Speaker 1>primarily the bicep. I think also somewhat the muscle in

0:05:34.640 --> 0:05:37.719
<v Speaker 1>your forearm is exerting the effort. The load is what's

0:05:37.720 --> 0:05:40.159
<v Speaker 1>in your hand, it's your your fist, and the full

0:05:40.240 --> 0:05:42.960
<v Speaker 1>crum is the elbow joint, and of course the bone

0:05:43.320 --> 0:05:45.840
<v Speaker 1>is the lever. So I think most of the body's

0:05:45.920 --> 0:05:49.000
<v Speaker 1>gross motor activity is based on the action of levers

0:05:49.040 --> 0:05:52.480
<v Speaker 1>with joints as the fulcrum uh. And then, but then

0:05:52.480 --> 0:05:55.840
<v Speaker 1>when you start looking for other simple machines and animal bodies,

0:05:55.839 --> 0:05:58.240
<v Speaker 1>you can turn up some examples, but it suddenly gets

0:05:58.240 --> 0:06:02.120
<v Speaker 1>a lot more difficult to scope things out. Like you

0:06:02.120 --> 0:06:05.080
<v Speaker 1>can maybe make the argument that sharp teeth and fangs

0:06:05.200 --> 0:06:07.640
<v Speaker 1>or a type of wedge which is technically a form

0:06:07.680 --> 0:06:12.560
<v Speaker 1>of the simple machine known as the inclined plane. But

0:06:12.600 --> 0:06:15.720
<v Speaker 1>then there are other types of of machines and machine

0:06:15.760 --> 0:06:19.839
<v Speaker 1>parts that are pretty rare or even nonexistent in nature,

0:06:20.040 --> 0:06:22.000
<v Speaker 1>and the wheel is a good one of these. There

0:06:22.000 --> 0:06:25.000
<v Speaker 1>there are really only a few examples that people can

0:06:25.040 --> 0:06:28.640
<v Speaker 1>point to of things that might be considered freely rotating

0:06:28.680 --> 0:06:33.159
<v Speaker 1>wheels and axles. In biology, sometimes people bring up versions

0:06:33.200 --> 0:06:36.520
<v Speaker 1>of the of bacterial flagella as something that sort of

0:06:36.520 --> 0:06:39.480
<v Speaker 1>operates like a wheel, kind of spinning like a propeller

0:06:39.520 --> 0:06:43.560
<v Speaker 1>to move the bacterium uh through through a liquid medium

0:06:43.720 --> 0:06:45.920
<v Speaker 1>and uh. And then there are also I think some

0:06:46.040 --> 0:06:50.480
<v Speaker 1>possible parts of animal digestive systems that may function kind

0:06:50.480 --> 0:06:54.080
<v Speaker 1>of like a wheel. But animal body plans clearly favored

0:06:54.120 --> 0:06:58.400
<v Speaker 1>the versatility of legs based on levers instead of wheels,

0:06:58.480 --> 0:07:01.200
<v Speaker 1>And you can make a few different arguments about like

0:07:01.279 --> 0:07:04.440
<v Speaker 1>why evolution overwhelmingly goes that route. You could you could

0:07:04.440 --> 0:07:08.240
<v Speaker 1>say maybe it has something to do with just morphological precedence,

0:07:08.360 --> 0:07:13.040
<v Speaker 1>like that levers are easier to evolve from the pre

0:07:13.120 --> 0:07:16.600
<v Speaker 1>existing forms that were available for animal bodies to work

0:07:16.680 --> 0:07:19.680
<v Speaker 1>on when in you know, adapting through small mutations. But

0:07:19.800 --> 0:07:23.560
<v Speaker 1>you could also argue that there are natural uh, terrain

0:07:23.680 --> 0:07:26.840
<v Speaker 1>negotiation advantages to levers. You know, if you're not in

0:07:26.880 --> 0:07:31.360
<v Speaker 1>a world of clean paved surfaces, wheels can actually pretty

0:07:31.360 --> 0:07:33.440
<v Speaker 1>easily get hung up on things, and you need the

0:07:33.560 --> 0:07:37.640
<v Speaker 1>articulation of levers and limbs in order to say, uh,

0:07:37.680 --> 0:07:40.520
<v Speaker 1>you know, get over rugged terrain, or to flip yourself

0:07:40.560 --> 0:07:42.880
<v Speaker 1>back over if you fall on your back. I think

0:07:42.880 --> 0:07:45.680
<v Speaker 1>it's also telling that when we look to the world

0:07:45.800 --> 0:07:50.440
<v Speaker 1>of mythological creatures than beings, we don't see a lot

0:07:50.480 --> 0:07:52.240
<v Speaker 1>of wheels, or at least we don't see a lot

0:07:52.280 --> 0:07:56.280
<v Speaker 1>of wheels that are innately organic, and then if we do,

0:07:56.720 --> 0:07:59.640
<v Speaker 1>we tend not to see a creature or a being

0:08:00.240 --> 0:08:04.480
<v Speaker 1>that is supposed to be of this world. Um and uh.

0:08:04.520 --> 0:08:07.760
<v Speaker 1>And perhaps there's some exception to this rule. That I'm overlooking,

0:08:07.840 --> 0:08:11.560
<v Speaker 1>but I thought I might bring up a couple of examples. One,

0:08:11.720 --> 0:08:14.360
<v Speaker 1>and I know I've mentioned this this critter on the

0:08:14.800 --> 0:08:19.640
<v Speaker 1>show before. There is a demon by the name of Bure.

0:08:19.840 --> 0:08:23.160
<v Speaker 1>I believe it is b u e R described in

0:08:23.400 --> 0:08:30.360
<v Speaker 1>Johann of Vierst sixty three Grimore pseudo Monarchia demonium Um.

0:08:30.680 --> 0:08:35.679
<v Speaker 1>This covers a number of different of supposed demons, and

0:08:35.760 --> 0:08:39.000
<v Speaker 1>this demon Buer is the Great President of Hell. Kind

0:08:39.000 --> 0:08:43.319
<v Speaker 1>of a goblin faced lion with kind of a wheel

0:08:43.520 --> 0:08:47.000
<v Speaker 1>of five legs going around it, which I find reminiscent

0:08:47.160 --> 0:08:50.640
<v Speaker 1>of the pet rail wheel which I mentioned in a

0:08:50.800 --> 0:08:54.720
<v Speaker 1>previous Artifact episode, an experimental tank wheel that had legs

0:08:54.760 --> 0:08:57.880
<v Speaker 1>on it um. So as the wheel turns, the legs

0:08:58.120 --> 0:09:01.280
<v Speaker 1>are are placed down onto the ount uh. In this

0:09:01.360 --> 0:09:04.599
<v Speaker 1>case they are goat legs, and I've I've read that

0:09:04.640 --> 0:09:07.400
<v Speaker 1>they're supposed to symbolize the demon's ability to move in

0:09:07.480 --> 0:09:10.360
<v Speaker 1>any direction. So I'm not entirely sure that we're even

0:09:10.400 --> 0:09:13.400
<v Speaker 1>supposed to imagine this creature turning like a wheel or

0:09:13.480 --> 0:09:16.199
<v Speaker 1>like a clock or something. But when I look at him,

0:09:16.280 --> 0:09:19.320
<v Speaker 1>that's all I can see, Like he basically moves on

0:09:19.360 --> 0:09:21.719
<v Speaker 1>the page or on the screen when I stare at him,

0:09:21.720 --> 0:09:23.880
<v Speaker 1>and I can imagine I'm kind of lumping around along.

0:09:24.000 --> 0:09:27.600
<v Speaker 1>You know. Well, I tend to think about um. When

0:09:27.600 --> 0:09:31.760
<v Speaker 1>wheels are imagined in the imagery of mythology and religion,

0:09:32.640 --> 0:09:35.160
<v Speaker 1>it's often to say something about the fact that the

0:09:35.280 --> 0:09:38.400
<v Speaker 1>vision is boggling the mind it. You know, that it's

0:09:38.480 --> 0:09:43.280
<v Speaker 1>transcending familiar forms and just completely awing you and humbling

0:09:43.320 --> 0:09:46.920
<v Speaker 1>you with confusion. Uh So I think, for example, about

0:09:47.240 --> 0:09:50.720
<v Speaker 1>Ezekiel's vision of the wheels in in in the Hebrew Bible,

0:09:51.280 --> 0:09:54.440
<v Speaker 1>and and how the wheels there, Uh, it seems to

0:09:54.480 --> 0:09:56.360
<v Speaker 1>me at least, I mean, I'm you know, no professional

0:09:56.440 --> 0:09:58.880
<v Speaker 1>legsagy eat on that, but it seems like that they

0:09:58.880 --> 0:10:02.840
<v Speaker 1>symbolize something about, uh, a concept that sort of like

0:10:02.880 --> 0:10:06.360
<v Speaker 1>surpasses human understanding. You're looking at something that your mind

0:10:06.480 --> 0:10:09.560
<v Speaker 1>can't even fit around. Yeah, I mean, we can easily

0:10:09.800 --> 0:10:12.680
<v Speaker 1>imagine the various connotations that are being drawn in there.

0:10:13.240 --> 0:10:15.240
<v Speaker 1>When you have a wheel like appearing in the sky,

0:10:15.440 --> 0:10:18.880
<v Speaker 1>because you have the idea of technology, something created by

0:10:18.960 --> 0:10:21.560
<v Speaker 1>rational beings, you have the idea of sort of cosmic

0:10:21.600 --> 0:10:25.880
<v Speaker 1>wheels and circular forms related to the movements of the

0:10:25.920 --> 0:10:29.319
<v Speaker 1>stars and the planets and so forth. Uh. And then

0:10:29.320 --> 0:10:32.920
<v Speaker 1>the idea too that if if this is mixed with

0:10:33.120 --> 0:10:37.320
<v Speaker 1>some sort of biological or faintly biological or hybrid form,

0:10:37.360 --> 0:10:40.040
<v Speaker 1>that that is again something that is not reflected in nature.

0:10:40.160 --> 0:10:44.120
<v Speaker 1>It is something there is something inherently unnatural about this,

0:10:44.120 --> 0:10:46.800
<v Speaker 1>this hybrid being that is not even just part animal

0:10:46.800 --> 0:10:49.160
<v Speaker 1>and part human. Are part of this animal and part

0:10:49.200 --> 0:10:53.800
<v Speaker 1>that animal, but part flesh being and part cosmic or

0:10:53.840 --> 0:10:57.360
<v Speaker 1>technological entity. Now then again, in nature and biology, you

0:10:57.400 --> 0:11:02.440
<v Speaker 1>do find all kinds of round mechanisms and round bodies

0:11:02.480 --> 0:11:05.000
<v Speaker 1>and even rolling forms. You know, lots of animals can

0:11:05.120 --> 0:11:07.680
<v Speaker 1>roll up into a round shape and then roll their

0:11:07.760 --> 0:11:11.280
<v Speaker 1>whole body. What you what really seems to be unusual

0:11:11.320 --> 0:11:13.720
<v Speaker 1>in nature, And again maybe you can only find a

0:11:13.840 --> 0:11:16.080
<v Speaker 1>few examples here and there that would seem to fit.

0:11:16.120 --> 0:11:20.480
<v Speaker 1>This is a freely rotating wheel that somehow transfers energy

0:11:20.520 --> 0:11:23.840
<v Speaker 1>within a broader context. So like the wheel and axle

0:11:23.960 --> 0:11:26.240
<v Speaker 1>on a car that moves the car body the car,

0:11:26.440 --> 0:11:29.200
<v Speaker 1>you know, the chassis stationary, and then the wheel turns

0:11:29.240 --> 0:11:31.920
<v Speaker 1>to propel it forward. That's what you really don't find

0:11:32.040 --> 0:11:34.640
<v Speaker 1>much of in nature. But if you're content with just

0:11:34.720 --> 0:11:37.720
<v Speaker 1>like something round, that rolls. You can have a wheel

0:11:37.720 --> 0:11:40.160
<v Speaker 1>spider rolling down a dune. You can have bugs that

0:11:40.280 --> 0:11:42.760
<v Speaker 1>roll up into round shapes and roll all over the place.

0:11:42.840 --> 0:11:45.840
<v Speaker 1>Even some mammals do that. Yeah, there are some examples

0:11:45.840 --> 0:11:52.280
<v Speaker 1>of creatures that that form rolling shapes, granted, if the

0:11:52.400 --> 0:11:55.600
<v Speaker 1>topography is correct. Uh. There's also, of course that the

0:11:55.679 --> 0:11:59.280
<v Speaker 1>example of goat poop I've seen brought up. Granted, goat

0:11:59.320 --> 0:12:01.600
<v Speaker 1>poop is not a self alive, but it is the

0:12:01.640 --> 0:12:05.480
<v Speaker 1>product of of a biological organism. And the idea here

0:12:05.640 --> 0:12:07.440
<v Speaker 1>is that the goat poop is nice and rounds so

0:12:07.440 --> 0:12:10.160
<v Speaker 1>that it can roll away and hide itself. Uh in

0:12:10.240 --> 0:12:16.559
<v Speaker 1>these kind of environments. But I advocate for goat poop personhood. Okay, Um.

0:12:17.320 --> 0:12:18.920
<v Speaker 1>But but of course, one of the things about any

0:12:18.960 --> 0:12:20.640
<v Speaker 1>of these rolling creatures is, of course, if it's going

0:12:20.679 --> 0:12:23.079
<v Speaker 1>to roll, it's everything's gonna roll. There's not gonna be

0:12:23.120 --> 0:12:26.800
<v Speaker 1>a stationary part all of the rolling creature, as in

0:12:27.080 --> 0:12:29.560
<v Speaker 1>the same way that say, there would be the cart

0:12:29.679 --> 0:12:32.760
<v Speaker 1>portion of an ox cart would remain the same. Uh.

0:12:32.800 --> 0:12:36.320
<v Speaker 1>But when we look to some of our supernatural models,

0:12:36.360 --> 0:12:38.520
<v Speaker 1>we do see things that work like this, of course

0:12:38.559 --> 0:12:42.800
<v Speaker 1>in a very supernatural form. Uh. There's a wonderful wheel

0:12:42.840 --> 0:12:47.120
<v Speaker 1>creature in um In Japanese traditions, there's a yokai known

0:12:47.160 --> 0:12:50.319
<v Speaker 1>as one you know, the fire wheel, and he's a

0:12:50.360 --> 0:12:53.439
<v Speaker 1>he's a pretty famous yokai. You've you've probably seen images

0:12:53.520 --> 0:12:57.280
<v Speaker 1>of him, especially if you partake of various like anime

0:12:57.960 --> 0:13:02.080
<v Speaker 1>um products, because he pops up in a lot of things,

0:13:02.080 --> 0:13:04.120
<v Speaker 1>and think he pops up in some video games as well.

0:13:04.600 --> 0:13:07.880
<v Speaker 1>He looks like a grumpy, giant human head sort of

0:13:07.960 --> 0:13:11.079
<v Speaker 1>haloed by a burning, smoking ghost wheel, and we get

0:13:11.120 --> 0:13:13.600
<v Speaker 1>the impression that the wheel is moving in the head

0:13:13.679 --> 0:13:17.240
<v Speaker 1>is remaining stationary. He said to guard the gates of hell,

0:13:17.920 --> 0:13:20.400
<v Speaker 1>and I've also read that in life he said to

0:13:20.440 --> 0:13:23.080
<v Speaker 1>have been a cruel ruler who burned people on the wheel,

0:13:23.120 --> 0:13:25.760
<v Speaker 1>so this is kind of his punishment. He haunts them

0:13:25.800 --> 0:13:29.120
<v Speaker 1>the roads at night he made drag souls back to hell.

0:13:29.440 --> 0:13:34.720
<v Speaker 1>And there's also a female variation called Catawaga. Okay, so

0:13:34.760 --> 0:13:37.440
<v Speaker 1>this would seem to be more like that mechanism you

0:13:37.480 --> 0:13:40.640
<v Speaker 1>don't really find in nature, if the head stays stationary

0:13:40.679 --> 0:13:43.560
<v Speaker 1>while the wheel turns around it right, And of course

0:13:43.559 --> 0:13:45.600
<v Speaker 1>in this too, we have just a it's not even

0:13:45.600 --> 0:13:48.079
<v Speaker 1>pretending to be an entirely organic creature. It is this

0:13:48.200 --> 0:13:54.160
<v Speaker 1>supernatural um combination of two or three different things. UM.

0:13:54.800 --> 0:13:57.199
<v Speaker 1>But yeah, this is a pretty popular figure. The Power

0:13:57.320 --> 0:14:00.840
<v Speaker 1>Rangers have even fought him on occasion. UM shows up

0:14:00.840 --> 0:14:03.800
<v Speaker 1>in various anime titles, and I have to say, sometimes

0:14:03.840 --> 0:14:06.320
<v Speaker 1>he looks a little bit like Dr robot Nick from

0:14:06.360 --> 0:14:10.040
<v Speaker 1>the Sonic Games. So I wonder if Dr Robotnick was

0:14:10.080 --> 0:14:13.400
<v Speaker 1>at all inspired by this yokai you know, a grumpy

0:14:13.480 --> 0:14:16.880
<v Speaker 1>faced man machine with kind of a spherical design. Because

0:14:17.040 --> 0:14:19.640
<v Speaker 1>Dr Robotnick is he's the Eggman, you know, so he's

0:14:19.680 --> 0:14:22.240
<v Speaker 1>often in some kind of little like little circular pod.

0:14:22.680 --> 0:14:25.600
<v Speaker 1>Why do I want to say that the the Dr

0:14:25.720 --> 0:14:28.200
<v Speaker 1>Robotnick was supposed to be based on the appearance of

0:14:28.280 --> 0:14:30.920
<v Speaker 1>Theodore Roosevelt. Do you know what I'm talking about? He

0:14:30.960 --> 0:14:33.400
<v Speaker 1>does look like Theodore Roosevelt. Yeah, so that might be

0:14:33.440 --> 0:14:36.360
<v Speaker 1>it instead. I don't know. I couldn't. I briefly looked around.

0:14:36.360 --> 0:14:39.440
<v Speaker 1>I couldn't find anything that connected at Dr Robotnick. There's

0:14:39.440 --> 0:14:42.480
<v Speaker 1>not a lot of scholarship on Dr Robotnick, it seems,

0:14:43.040 --> 0:14:44.840
<v Speaker 1>unless I'm missing it. And if I am missing it,

0:14:45.120 --> 0:14:47.800
<v Speaker 1>please send it to me. I want to read your

0:14:47.560 --> 0:14:51.520
<v Speaker 1>your thesis. Okay, our new podcast is an oral history

0:14:51.560 --> 0:14:56.760
<v Speaker 1>of Dr Robotnick. Um. Now there's a there's another throw

0:14:56.840 --> 0:14:59.080
<v Speaker 1>some I am the Walrus, and some Teddy Roosevelt and

0:14:59.120 --> 0:15:01.440
<v Speaker 1>your blender, and then there you go, oh yeah, there's

0:15:01.440 --> 0:15:03.680
<v Speaker 1>definitely a It seems like there's definitely a Beatles connection

0:15:03.720 --> 0:15:07.160
<v Speaker 1>there as well. Now, um, I was I was reading

0:15:07.200 --> 0:15:09.560
<v Speaker 1>about this two particularly Yokai, and there's one more little

0:15:09.560 --> 0:15:11.520
<v Speaker 1>story I ran across it. I have to share this was.

0:15:12.040 --> 0:15:15.480
<v Speaker 1>I found this on Matthew Myers. Yokai dot Com has

0:15:15.520 --> 0:15:18.920
<v Speaker 1>a profile of when Udo and shares a brief story

0:15:19.000 --> 0:15:21.040
<v Speaker 1>that I haven't found anywhere else but it's it's too

0:15:21.080 --> 0:15:23.400
<v Speaker 1>good not to share, and I'm probably just missing accounts

0:15:23.400 --> 0:15:27.520
<v Speaker 1>of it elsewhere, but quoting this website, one famous story

0:15:27.560 --> 0:15:30.720
<v Speaker 1>from Kyoto tells a woman who peeked out her window

0:15:31.000 --> 0:15:33.920
<v Speaker 1>at one Udo as he passed through town. The demon

0:15:34.000 --> 0:15:36.760
<v Speaker 1>snarled at her, saying, instead of looking at me, have

0:15:36.800 --> 0:15:39.200
<v Speaker 1>a look at your own child. She looked back at

0:15:39.200 --> 0:15:41.200
<v Speaker 1>her baby, who was screaming on the floor in a

0:15:41.240 --> 0:15:43.720
<v Speaker 1>pool of blood. Both of its legs had been completely

0:15:43.720 --> 0:15:46.400
<v Speaker 1>torn from its body. When she looked back out at

0:15:46.400 --> 0:15:49.200
<v Speaker 1>one Udo, that child's legs were in its mouth being

0:15:49.240 --> 0:15:53.920
<v Speaker 1>eaten by the mad grinning monster. What so it did

0:15:54.040 --> 0:15:59.040
<v Speaker 1>he teleport that I don't Okay, yeah, yeah, I don't know.

0:15:59.120 --> 0:16:02.200
<v Speaker 1>He's eating those babies eggs. He's a bad dude. That

0:16:02.200 --> 0:16:10.640
<v Speaker 1>that's a bad dude. So anyway, I'll stop there with

0:16:10.680 --> 0:16:13.320
<v Speaker 1>my wheel creatures. But this is suffice to say, just

0:16:13.320 --> 0:16:15.760
<v Speaker 1>just bringing these up to drive home the fact that

0:16:15.760 --> 0:16:18.840
<v Speaker 1>that I think we we have long not expected to

0:16:18.880 --> 0:16:22.320
<v Speaker 1>find wheels and gears in the natural world. They are

0:16:22.360 --> 0:16:26.320
<v Speaker 1>things of our creation. We are the people of the wheel, well,

0:16:26.440 --> 0:16:29.280
<v Speaker 1>especially the gear. So that that was my original idea

0:16:29.360 --> 0:16:31.280
<v Speaker 1>for the episode, was to focus on the idea of

0:16:31.960 --> 0:16:36.200
<v Speaker 1>artificial gears versus possible examples of gears in nature. And

0:16:36.240 --> 0:16:38.320
<v Speaker 1>while you can make arguments for a few examples of

0:16:38.320 --> 0:16:41.560
<v Speaker 1>wheels in nature, the gear is really a different kind

0:16:41.560 --> 0:16:44.400
<v Speaker 1>of story, except for this one really cool example that

0:16:44.440 --> 0:16:47.840
<v Speaker 1>we're gonna be looking at today. So what is a gear? Well,

0:16:48.160 --> 0:16:51.240
<v Speaker 1>you've seen gears before, but to actually define the concept

0:16:51.280 --> 0:16:54.080
<v Speaker 1>what counts as a gear? I think I think you

0:16:54.120 --> 0:16:58.000
<v Speaker 1>could say a gear is a set of rotating machine

0:16:58.040 --> 0:17:01.800
<v Speaker 1>parts with interlocking teeth. So these can often take the

0:17:01.840 --> 0:17:05.600
<v Speaker 1>form of a kind of flat circular plate, but they

0:17:05.600 --> 0:17:07.960
<v Speaker 1>can also take the form of say like a long

0:17:08.160 --> 0:17:10.639
<v Speaker 1>shaft that has teeth on the shaft, or they can

0:17:10.680 --> 0:17:13.760
<v Speaker 1>even be non circular. There are more kind of square

0:17:13.800 --> 0:17:16.840
<v Speaker 1>shaped gears and gears of all different kinds of shapes

0:17:16.880 --> 0:17:20.240
<v Speaker 1>and sizes, but what's common to all of them is

0:17:20.359 --> 0:17:23.720
<v Speaker 1>that they have teeth that interlock with each other and

0:17:23.760 --> 0:17:28.760
<v Speaker 1>they use those teeth and rotation to transfer force rotational

0:17:28.880 --> 0:17:32.000
<v Speaker 1>force known as torque. So they can transfer torque from

0:17:32.040 --> 0:17:35.360
<v Speaker 1>one place to another, and they can also sometimes transform

0:17:35.480 --> 0:17:38.639
<v Speaker 1>that force in some way as it is transferred. So

0:17:38.760 --> 0:17:42.320
<v Speaker 1>gears can change the direction of rotational force. Like if

0:17:42.359 --> 0:17:46.800
<v Speaker 1>you picture two interlocking wheel shaped gears, you rotate one

0:17:46.800 --> 0:17:50.520
<v Speaker 1>of them clockwise, it'll actually rotate the other one counterclockwise,

0:17:51.000 --> 0:17:54.199
<v Speaker 1>so that'll that'll perform one kind of change, or you

0:17:54.240 --> 0:17:57.439
<v Speaker 1>can change the orientation of the torque by having the

0:17:57.480 --> 0:18:01.280
<v Speaker 1>gears interlock at an angle. So think of, for example,

0:18:01.320 --> 0:18:04.560
<v Speaker 1>how if you imagine a car that has the engine

0:18:05.000 --> 0:18:09.840
<v Speaker 1>sending its rotational force its torque through a drive shaft

0:18:09.920 --> 0:18:12.399
<v Speaker 1>that runs along the length of the car, then that

0:18:12.560 --> 0:18:15.520
<v Speaker 1>energy has to be transferred to the wheels to get

0:18:15.520 --> 0:18:18.560
<v Speaker 1>them rotating. In the direction that's parallel to the car's motion.

0:18:18.720 --> 0:18:22.639
<v Speaker 1>So there are gears that interlock at angles there to

0:18:22.720 --> 0:18:25.919
<v Speaker 1>transfer that force eventually to the wheels. But gears can

0:18:25.960 --> 0:18:29.400
<v Speaker 1>also be used to gain mechanical advantage or change the

0:18:29.560 --> 0:18:34.359
<v Speaker 1>speed of a rotational force in a mathematically predictable way. So,

0:18:34.440 --> 0:18:36.880
<v Speaker 1>for example, if you use a bigger gear with more

0:18:36.920 --> 0:18:40.320
<v Speaker 1>teeth to spin a smaller gear with fewer teeth, the

0:18:40.400 --> 0:18:44.000
<v Speaker 1>smaller gear will spin faster than the larger one, and

0:18:44.040 --> 0:18:47.080
<v Speaker 1>the change in speed will be proportional to the ratio

0:18:47.160 --> 0:18:50.320
<v Speaker 1>of the tooth counts between the two differently sized gears.

0:18:50.359 --> 0:18:53.360
<v Speaker 1>In other words, if you use a gear to drive

0:18:53.400 --> 0:18:55.760
<v Speaker 1>a second gear with half as many teeth as the

0:18:55.800 --> 0:18:59.440
<v Speaker 1>first gear, it will spin exactly twice as fast. To

0:18:59.520 --> 0:19:02.800
<v Speaker 1>a certain stand. It almost feels like like wheel wizardry,

0:19:03.800 --> 0:19:06.919
<v Speaker 1>because the wheel is doing its thing and and and

0:19:06.920 --> 0:19:08.760
<v Speaker 1>if you're not going to do anything else, you can Okay,

0:19:08.760 --> 0:19:12.119
<v Speaker 1>you can do various tasks and carry out various acts

0:19:12.640 --> 0:19:17.000
<v Speaker 1>by interacting with that wheel on its terms. But by

0:19:17.000 --> 0:19:19.960
<v Speaker 1>the use of gears, you can transform it. You can

0:19:20.160 --> 0:19:24.359
<v Speaker 1>you can make the gear work in other ways. Um,

0:19:24.680 --> 0:19:27.000
<v Speaker 1>And I think that's that's one of the fascinating things.

0:19:27.000 --> 0:19:28.720
<v Speaker 1>So when we're when we're talking about sort of that

0:19:28.800 --> 0:19:31.560
<v Speaker 1>lead from from wheel to gear. And of course, and

0:19:31.640 --> 0:19:33.360
<v Speaker 1>this could be just as simple as why I don't

0:19:33.359 --> 0:19:37.800
<v Speaker 1>want horizontal rotation, I want vertical rotation, that sort of thing, right,

0:19:37.880 --> 0:19:40.760
<v Speaker 1>But it can also this last thing I mentioned about

0:19:40.760 --> 0:19:45.359
<v Speaker 1>the predictable mathematical relationships between the intervals of rotation of

0:19:45.400 --> 0:19:50.200
<v Speaker 1>tooth to gears. The fact that toothed gears are quantized, right,

0:19:50.200 --> 0:19:52.480
<v Speaker 1>that you can like put a number to the number

0:19:52.520 --> 0:19:54.879
<v Speaker 1>of teeth on a rotation that allows you to tightly

0:19:54.920 --> 0:19:58.560
<v Speaker 1>control the ratios you know, how fast one spins in

0:19:58.640 --> 0:20:02.920
<v Speaker 1>relationship to another one. That actually has made gears useful

0:20:03.040 --> 0:20:06.480
<v Speaker 1>not just for say, applying force to things like you know,

0:20:06.560 --> 0:20:11.200
<v Speaker 1>powering a machine or something, but also for tasks related

0:20:11.240 --> 0:20:14.560
<v Speaker 1>to more abstract types of work, like measurements such as

0:20:14.680 --> 0:20:18.879
<v Speaker 1>measuring intervals of time UM and not just in straightforward

0:20:18.920 --> 0:20:22.360
<v Speaker 1>timekeeping devices like clocks. Of course, gears are very important

0:20:22.359 --> 0:20:27.199
<v Speaker 1>in in um analog clocks, but even more complex applications

0:20:27.240 --> 0:20:30.159
<v Speaker 1>like we see in one of the most intriguing artifacts

0:20:30.200 --> 0:20:34.159
<v Speaker 1>from the ancient world, known as the Antiko theorem mechanism,

0:20:34.520 --> 0:20:39.520
<v Speaker 1>which is widely considered the first known computer not a

0:20:39.560 --> 0:20:43.760
<v Speaker 1>digital computer, but an analog computer, a computer that uses

0:20:43.920 --> 0:20:49.640
<v Speaker 1>gears instead of semiconductors for information processing. UH. The antikothera

0:20:49.720 --> 0:20:53.199
<v Speaker 1>mechanism was discovered in a Roman era shipwreck in the

0:20:53.280 --> 0:20:57.360
<v Speaker 1>Mediterranean around the r nineteen hundred UH and this shipwreck

0:20:57.440 --> 0:21:00.320
<v Speaker 1>traced back to a ship that sank probably in the

0:21:00.440 --> 0:21:03.679
<v Speaker 1>first century CE. ROB. I've got an image for you

0:21:03.760 --> 0:21:06.439
<v Speaker 1>to look at here that shows the actual remains of

0:21:06.480 --> 0:21:10.560
<v Speaker 1>the mechanism alongside a modern reconstruction that was sort of

0:21:10.600 --> 0:21:14.160
<v Speaker 1>reverse engineered and built by some experts who had studied

0:21:14.160 --> 0:21:17.560
<v Speaker 1>this machine. The mechanism is now understood to have been

0:21:17.600 --> 0:21:21.919
<v Speaker 1>an ancient mechanical or ory. An oorory is a is

0:21:21.960 --> 0:21:26.520
<v Speaker 1>a working model of the movement of heavenly bodies, and

0:21:26.560 --> 0:21:29.320
<v Speaker 1>this one would have been powered by a hand crank

0:21:29.720 --> 0:21:33.520
<v Speaker 1>that operated gears. And this or ory would allow you

0:21:33.600 --> 0:21:37.679
<v Speaker 1>to calculate the relative positions of heavenly bodies like the

0:21:37.720 --> 0:21:41.160
<v Speaker 1>Moon and the Sun as they traveled through the zodiac

0:21:41.200 --> 0:21:44.480
<v Speaker 1>out to specific future dates. UH. And I think it

0:21:44.640 --> 0:21:47.639
<v Speaker 1>may it may also have tracked planetary motion as well,

0:21:47.680 --> 0:21:50.520
<v Speaker 1>but that's less certain. I think that's a hypothetical mechanism

0:21:50.560 --> 0:21:52.879
<v Speaker 1>that may have been present but may have been lost.

0:21:53.560 --> 0:21:56.359
<v Speaker 1>When I look at it, I'm instantly reminded of those uh,

0:21:56.720 --> 0:22:00.760
<v Speaker 1>those gear devices you find at museums and zoos where

0:22:00.880 --> 0:22:02.639
<v Speaker 1>you can squash a penny and make it into a

0:22:02.640 --> 0:22:06.600
<v Speaker 1>collector's token, which which I have to say, as as

0:22:06.640 --> 0:22:09.720
<v Speaker 1>a parent, I have I have long realized that children

0:22:09.760 --> 0:22:14.520
<v Speaker 1>are drawn to these like like flies to meet they

0:22:14.520 --> 0:22:18.000
<v Speaker 1>they have to turn the crank, they have to watch

0:22:18.040 --> 0:22:22.679
<v Speaker 1>those gears operate. Um and uh and And now that

0:22:22.680 --> 0:22:24.520
<v Speaker 1>we've actually discussed gears a bit on the show, I

0:22:24.600 --> 0:22:26.440
<v Speaker 1>used to be I was. I've long been very annoyed

0:22:26.440 --> 0:22:28.119
<v Speaker 1>by it, like, oh, come on, don't mess with that.

0:22:28.240 --> 0:22:29.879
<v Speaker 1>We're here to look at something else, and you're just

0:22:29.880 --> 0:22:31.840
<v Speaker 1>gonna turn this gear on this machine that I'm not

0:22:31.880 --> 0:22:34.000
<v Speaker 1>going to give you fifty cents and a penny for

0:22:34.240 --> 0:22:37.560
<v Speaker 1>because it's it's a dumb invention. But at the same

0:22:37.560 --> 0:22:39.760
<v Speaker 1>time they're interacting with the gears, they're getting to see

0:22:39.800 --> 0:22:41.879
<v Speaker 1>the gears in motion and see some of that energy

0:22:41.880 --> 0:22:44.360
<v Speaker 1>transference that we're talking about. Oh well, I mean yeah,

0:22:44.359 --> 0:22:47.080
<v Speaker 1>it's a beautiful way. Actually, I think to educate kids

0:22:47.119 --> 0:22:51.080
<v Speaker 1>about mechanical advantage, about like what machines can do. Because

0:22:51.119 --> 0:22:54.520
<v Speaker 1>the kid, they know that they wouldn't have enough strength

0:22:54.600 --> 0:22:57.760
<v Speaker 1>to smash a penny flat with their hands alone, but

0:22:57.920 --> 0:23:02.280
<v Speaker 1>with their hands by operating a crank in a machine

0:23:02.280 --> 0:23:04.760
<v Speaker 1>that has no external power source. It's just the power

0:23:04.800 --> 0:23:08.080
<v Speaker 1>of their arm. But through the mechanical advantage created by

0:23:08.119 --> 0:23:10.600
<v Speaker 1>this crank, the lever of the gears, they can smash

0:23:10.680 --> 0:23:13.800
<v Speaker 1>a penny. That that's kind of that's that's empowering knowledge

0:23:13.840 --> 0:23:17.000
<v Speaker 1>that there's a wizardry to that too. Behold the power

0:23:17.040 --> 0:23:20.720
<v Speaker 1>of the gear. But anyway back to the antikotheram mechanism.

0:23:20.800 --> 0:23:25.439
<v Speaker 1>So it was able to predict the future movements of

0:23:25.560 --> 0:23:27.879
<v Speaker 1>heavenly bodies like the Sun and the moon, and also

0:23:27.920 --> 0:23:31.679
<v Speaker 1>I think predict eclipses. And it managed the different time

0:23:31.800 --> 0:23:36.320
<v Speaker 1>ratios between these these moving objects in the heavens by

0:23:36.440 --> 0:23:40.119
<v Speaker 1>the use of gear ratios, gear ratios to calculate the

0:23:40.160 --> 0:23:43.359
<v Speaker 1>intervals of these movements. So in a way, this was

0:23:43.400 --> 0:23:47.040
<v Speaker 1>a calculator the different ratios between the number of teeth

0:23:47.160 --> 0:23:50.600
<v Speaker 1>on the gears. We're doing math for you now. We

0:23:50.640 --> 0:23:53.280
<v Speaker 1>know in the modern world, gears are useful in all

0:23:53.400 --> 0:23:56.320
<v Speaker 1>kinds of machines. You find them everywhere they're in clocks,

0:23:56.359 --> 0:23:59.640
<v Speaker 1>they're in cars, they're in fluid pumps, they're in mills

0:23:59.680 --> 0:24:03.800
<v Speaker 1>and factory machines. But but you might wonder, okay, well,

0:24:03.840 --> 0:24:07.040
<v Speaker 1>where did they first appear in the technological space, because

0:24:07.200 --> 0:24:10.879
<v Speaker 1>you wouldn't necessarily expect to have found a computer for

0:24:10.920 --> 0:24:15.439
<v Speaker 1>astronomical phenomena in the first century CE. But here it is.

0:24:15.560 --> 0:24:17.680
<v Speaker 1>And probably actually it's even older than that. I think

0:24:17.720 --> 0:24:20.359
<v Speaker 1>it's believed to have been. Uh. I don't know, maybe

0:24:20.440 --> 0:24:22.639
<v Speaker 1>at least a hundred years old at the time it

0:24:22.760 --> 0:24:26.800
<v Speaker 1>was lost in this shipwreck, so so clearly that that's

0:24:26.840 --> 0:24:30.720
<v Speaker 1>taking gear math way way back. Uh. And I was

0:24:30.760 --> 0:24:33.240
<v Speaker 1>trying to find some good sources on the ancient history

0:24:33.280 --> 0:24:36.399
<v Speaker 1>of gears. I didn't come across anything that was super recent,

0:24:36.480 --> 0:24:39.760
<v Speaker 1>so there may be discoveries since these sources I turned up.

0:24:39.800 --> 0:24:43.440
<v Speaker 1>But um one that was interesting to me because it

0:24:43.480 --> 0:24:46.719
<v Speaker 1>was by Derek John Desola Price, who was a British

0:24:46.760 --> 0:24:49.760
<v Speaker 1>physicist and historian of science who was one of the

0:24:49.800 --> 0:24:53.960
<v Speaker 1>investigators who worked on the antiko theorem mechanism. UH. He

0:24:54.240 --> 0:24:57.080
<v Speaker 1>did a chapter that was in a book put out

0:24:57.119 --> 0:25:00.000
<v Speaker 1>by the U. S National Museum Bulletin in nineteen five.

0:25:00.080 --> 0:25:03.720
<v Speaker 1>De nine, called on the origin of clockwork perpetual motion

0:25:03.800 --> 0:25:06.639
<v Speaker 1>devices in the compass, and in a short section on

0:25:06.720 --> 0:25:11.399
<v Speaker 1>the earliest known examples of gears and geared mechanisms, he

0:25:11.440 --> 0:25:14.080
<v Speaker 1>writes that the earliest evidence for the knowledge of tooth

0:25:14.119 --> 0:25:17.520
<v Speaker 1>to gears um probably it goes back at least as

0:25:17.560 --> 0:25:21.720
<v Speaker 1>far as the Greek mathematician and inventor Archimedes, who showed

0:25:21.760 --> 0:25:24.879
<v Speaker 1>clear knowledge of of toothed gears, and he lived in

0:25:24.920 --> 0:25:29.600
<v Speaker 1>the third century BC. But he also cites artifacts from

0:25:29.640 --> 0:25:33.920
<v Speaker 1>ancient China that may indicate knowledge of of gears even

0:25:33.960 --> 0:25:36.960
<v Speaker 1>farther back than that. He writes, quote, in China, actual

0:25:37.040 --> 0:25:40.320
<v Speaker 1>examples of wheels and molds for wheels dating back from

0:25:40.320 --> 0:25:43.760
<v Speaker 1>the fourth century BC have been preserved. One of the

0:25:43.800 --> 0:25:46.880
<v Speaker 1>interesting things he mentions about some of these earliest examples

0:25:46.920 --> 0:25:50.920
<v Speaker 1>of gears in the archaeological record, uh, He says, quote,

0:25:50.960 --> 0:25:53.800
<v Speaker 1>A remarkable feature in these early gears is the use

0:25:53.840 --> 0:25:58.919
<v Speaker 1>of ratchet shaped teeth, sometimes even twisted heliically so that

0:25:59.000 --> 0:26:04.640
<v Speaker 1>the gears resemble worms intermeshing on parallel axles. But then

0:26:04.640 --> 0:26:06.960
<v Speaker 1>he also calls attention to the fact that throughout much

0:26:06.960 --> 0:26:11.240
<v Speaker 1>of history, UH, you know, definitely before the Industrial Revolution,

0:26:11.359 --> 0:26:14.280
<v Speaker 1>a big use of a lot of a major use

0:26:14.320 --> 0:26:18.760
<v Speaker 1>for gears in the technological space was in mills, in

0:26:18.880 --> 0:26:22.120
<v Speaker 1>windmills and water mills, using large gears as a way

0:26:22.119 --> 0:26:25.640
<v Speaker 1>of transferring force, often at a right angle to how

0:26:25.640 --> 0:26:27.800
<v Speaker 1>these natural forces like the flow of water or the

0:26:27.800 --> 0:26:31.960
<v Speaker 1>flow of wind, we're we're moving the primary turban. Yeah,

0:26:32.040 --> 0:26:35.480
<v Speaker 1>or likewise to transition from say a horizontal paddle wheel

0:26:35.520 --> 0:26:38.600
<v Speaker 1>into a vertical millstone, that sort of thing. Yeah. Yeah.

0:26:38.680 --> 0:26:42.320
<v Speaker 1>Now another paper that you you turned up on. This

0:26:42.680 --> 0:26:45.600
<v Speaker 1>comes to us from M. J. T. Lewis Gearing in

0:26:45.640 --> 0:26:49.840
<v Speaker 1>the Ancient World, published in Endeavor seventy seventeen, number three

0:26:49.880 --> 0:26:53.639
<v Speaker 1>from UM and I was reading through this one. This

0:26:53.680 --> 0:26:57.959
<v Speaker 1>was pretty interesting. I'm gonna be some slight retreading of

0:26:57.960 --> 0:27:01.879
<v Speaker 1>what we're very discussed. But basically, according to this this paper,

0:27:02.160 --> 0:27:05.440
<v Speaker 1>we can trace the technology of of the gear to

0:27:05.680 --> 0:27:09.480
<v Speaker 1>ancient Greeks of the third century b c. Which also

0:27:09.680 --> 0:27:13.960
<v Speaker 1>according to um uh to Fagan at all in uh

0:27:14.080 --> 0:27:17.199
<v Speaker 1>the seventy Great Inventions of the Ancient World. Uh. You

0:27:17.240 --> 0:27:19.840
<v Speaker 1>know this is this is also the time and place

0:27:19.920 --> 0:27:21.960
<v Speaker 1>where we see, at least according to ancient Greek and

0:27:22.040 --> 0:27:26.480
<v Speaker 1>Latin technical authors, the birth of water powered milling UH,

0:27:26.520 --> 0:27:29.600
<v Speaker 1>a technology that of course would be highly effective. But

0:27:29.880 --> 0:27:33.560
<v Speaker 1>according to to uh To Lewis, here in Alexandria, the

0:27:33.600 --> 0:27:36.560
<v Speaker 1>Greek kings of Egypt at the time the Ptolemy's they

0:27:36.560 --> 0:27:39.800
<v Speaker 1>set up a research center called the Museum. I think

0:27:39.800 --> 0:27:42.080
<v Speaker 1>we've talked about the museum in the past, right, perhaps

0:27:42.080 --> 0:27:45.359
<v Speaker 1>even in our episode the Invention of the Museum, about

0:27:45.400 --> 0:27:47.679
<v Speaker 1>the sort of the original usage of this word that

0:27:47.720 --> 0:27:52.399
<v Speaker 1>sounds familiar, Yeah, yeah, So basically, various technological innovations were

0:27:52.440 --> 0:27:54.720
<v Speaker 1>said to have emerged from this this sort of lab

0:27:54.840 --> 0:27:59.399
<v Speaker 1>this kind of technological think tank and laboratory. Uh And

0:27:59.600 --> 0:28:04.720
<v Speaker 1>according to such writers as hero Vitruvius and Phillow of Byzantium,

0:28:04.760 --> 0:28:08.359
<v Speaker 1>they all point to the work of Tiscibius, who would

0:28:08.359 --> 0:28:11.679
<v Speaker 1>have lived to eight five through to twenty two b

0:28:11.800 --> 0:28:15.640
<v Speaker 1>c e. None of his actual writings survived, but he's

0:28:15.640 --> 0:28:19.919
<v Speaker 1>said to have written various works on compressed air and hydraulics,

0:28:20.560 --> 0:28:25.119
<v Speaker 1>and hero Vitrucius and Philo would all go on to

0:28:25.280 --> 0:28:28.840
<v Speaker 1>write at length on these various machines and UH and

0:28:28.840 --> 0:28:33.679
<v Speaker 1>and devices, various gear arrangements. Other great minds of that

0:28:33.800 --> 0:28:38.120
<v Speaker 1>age and region, such as Archimedes, would also expand on

0:28:38.240 --> 0:28:41.840
<v Speaker 1>these ideas as well. Now Lewis explains that we ultimately

0:28:41.960 --> 0:28:45.440
<v Speaker 1>don't know where and when the earliest gears pop up

0:28:45.440 --> 0:28:49.360
<v Speaker 1>in human history. Uh Tooth gears, he writes, already existed

0:28:49.400 --> 0:28:51.640
<v Speaker 1>in the form of ratchet wheels that were used to

0:28:51.680 --> 0:28:54.680
<v Speaker 1>hold a windlass against a load, and these might date

0:28:54.720 --> 0:28:58.240
<v Speaker 1>back to Greek crane innovations from around five b c.

0:28:58.480 --> 0:29:02.320
<v Speaker 1>E um he. He also points out that a bronze

0:29:02.360 --> 0:29:05.480
<v Speaker 1>example of this has been found from about a century later,

0:29:05.840 --> 0:29:08.280
<v Speaker 1>and this might have been used for hauling ships up

0:29:08.280 --> 0:29:12.200
<v Speaker 1>a slipway. After this point, ratchets were widely used on

0:29:12.320 --> 0:29:14.640
<v Speaker 1>catapults as a way of holding back all that potential

0:29:14.680 --> 0:29:19.160
<v Speaker 1>firing energy. Um but, he writes, quote but the first

0:29:19.200 --> 0:29:23.160
<v Speaker 1>toothed wheel for transmitting motion may have been a sprocket

0:29:23.200 --> 0:29:27.320
<v Speaker 1>wheel driving a chain. This is attested by two machines

0:29:27.320 --> 0:29:30.960
<v Speaker 1>described by Philo. One is a chain of buckets powered

0:29:31.000 --> 0:29:33.800
<v Speaker 1>by a water wheel. The other is a repeater catapult

0:29:34.080 --> 0:29:38.480
<v Speaker 1>built in roads by certain Dionysius of Alexandria, who cannot

0:29:38.480 --> 0:29:42.520
<v Speaker 1>be precisely identified, but may have well worked before to

0:29:42.800 --> 0:29:46.440
<v Speaker 1>eight two b c. E. So, the Greeks and the

0:29:46.520 --> 0:29:50.400
<v Speaker 1>Romans obviously applied the subsequent technology to a number of tasks.

0:29:50.400 --> 0:29:53.160
<v Speaker 1>But but Lewis raises the question did they invent all

0:29:53.200 --> 0:29:56.200
<v Speaker 1>of this themselves or did they borrow or pick up

0:29:56.240 --> 0:29:58.560
<v Speaker 1>on the ideas of others, And he writes that one

0:29:58.600 --> 0:30:04.000
<v Speaker 1>possibility would be that they somehow got these ideas from China.

0:30:04.440 --> 0:30:07.160
<v Speaker 1>In fact, he writes, this would be seemingly the only

0:30:07.680 --> 0:30:12.360
<v Speaker 1>other alternative UM. However, one of the limiting factors here

0:30:12.480 --> 0:30:16.320
<v Speaker 1>is that accounts of the gear in China largely come later,

0:30:16.440 --> 0:30:20.160
<v Speaker 1>from the first century CE. But he writes, quote the

0:30:20.240 --> 0:30:23.720
<v Speaker 1>only earlier examples in China so far recorded, and I

0:30:23.800 --> 0:30:27.160
<v Speaker 1>do want to stress this was like UM are a

0:30:27.240 --> 0:30:30.080
<v Speaker 1>number of very small bronze gears and ratchets found in

0:30:30.160 --> 0:30:33.640
<v Speaker 1>tombs and dating from around two b c E to

0:30:33.800 --> 0:30:38.320
<v Speaker 1>fifty C. They include extraordinarily what looked like chevron or

0:30:38.400 --> 0:30:42.640
<v Speaker 1>double helical gear wheels of tiny size. All seemed too

0:30:42.680 --> 0:30:46.160
<v Speaker 1>small and too early to belong as has been suggested

0:30:46.360 --> 0:30:50.120
<v Speaker 1>to windlasses for drawing crossbows, and we have no idea

0:30:50.280 --> 0:30:54.000
<v Speaker 1>what they were for gear mystery, And I include a

0:30:54.680 --> 0:30:58.600
<v Speaker 1>uh images of these uh, these mysterious gears below, So yeah,

0:30:58.640 --> 0:31:00.920
<v Speaker 1>I haven't haven't had a lot of time to to

0:31:01.120 --> 0:31:04.400
<v Speaker 1>investigate further to see if any additional scholarship has emerged

0:31:04.480 --> 0:31:06.520
<v Speaker 1>on these little gears and what they might have been

0:31:06.640 --> 0:31:09.920
<v Speaker 1>used for. Um. And I don't know if if, ultimately

0:31:09.960 --> 0:31:12.520
<v Speaker 1>there are stronger arguments that have been put put forth

0:31:13.080 --> 0:31:17.400
<v Speaker 1>regarding their use or possible use and crossbow technology. But

0:31:17.600 --> 0:31:20.479
<v Speaker 1>it's fascinating. Oh, one of these pictures you attached. I

0:31:20.560 --> 0:31:24.040
<v Speaker 1>wonder if this is what Derek J. To sell a

0:31:24.120 --> 0:31:27.960
<v Speaker 1>Price was referring to when talking about ratchet shaped teeth

0:31:28.600 --> 0:31:31.960
<v Speaker 1>that are twisted helickally so that they look like worms

0:31:32.040 --> 0:31:35.520
<v Speaker 1>intermeshing on parallel axles. That I can see at least

0:31:35.560 --> 0:31:38.200
<v Speaker 1>one of the images you include from the Chinese example

0:31:38.320 --> 0:31:40.880
<v Speaker 1>could could be what he's talking about there. Yeah, that's

0:31:40.920 --> 0:31:43.120
<v Speaker 1>where my mind went when you read that that debt.

0:31:43.160 --> 0:31:45.479
<v Speaker 1>Having having looked at these examples, Yeah, it has kind

0:31:45.480 --> 0:31:49.720
<v Speaker 1>of a worm like quality to it. Um. Now, ultimately,

0:31:49.800 --> 0:31:53.320
<v Speaker 1>Lewis and his writing, he contends that gearing was either

0:31:53.400 --> 0:31:56.960
<v Speaker 1>invented independently in China and in the Greek world, or

0:31:57.000 --> 0:31:59.520
<v Speaker 1>that it was actually transmitted from the West to the

0:31:59.600 --> 0:32:04.480
<v Speaker 1>East rather than vice versa. But but, but, like I said,

0:32:04.480 --> 0:32:06.880
<v Speaker 1>that there may be additional scholarship that we just haven't

0:32:07.680 --> 0:32:10.320
<v Speaker 1>come across yet regarding this, But it does raise the

0:32:10.400 --> 0:32:13.760
<v Speaker 1>question what kind of gears would one be entombed with.

0:32:13.920 --> 0:32:17.120
<v Speaker 1>You know, what what bit of technology would it make

0:32:17.200 --> 0:32:20.360
<v Speaker 1>sense to to to go to the grave with. I mean,

0:32:20.400 --> 0:32:23.520
<v Speaker 1>certainly a very nice crossbow seems like the sort of

0:32:23.520 --> 0:32:26.120
<v Speaker 1>thing you might bring with you. Um, I don't know

0:32:26.160 --> 0:32:27.680
<v Speaker 1>if it would make sense for there to be some

0:32:27.760 --> 0:32:31.479
<v Speaker 1>sort of like purely novelty gear device, like something that

0:32:31.600 --> 0:32:35.720
<v Speaker 1>was more of a curio that maybe wasn't fully utilized,

0:32:35.920 --> 0:32:39.840
<v Speaker 1>or you know, an analog computer. Yeah, it could be.

0:32:40.040 --> 0:32:42.280
<v Speaker 1>I guess if your journey in the afterlife really depends

0:32:42.280 --> 0:32:45.600
<v Speaker 1>on knowing when an eclipse is coming, yeah, I wonder yeah, yeah,

0:32:45.680 --> 0:32:47.920
<v Speaker 1>And then of course, but then of course, just interlocking

0:32:48.000 --> 0:32:52.040
<v Speaker 1>gears and turning things are just are interesting. They they

0:32:52.480 --> 0:32:57.560
<v Speaker 1>they make us think about about motion and uh, interlocking energy.

0:32:57.760 --> 0:33:00.040
<v Speaker 1>So I don't know, it seems like they're they're a

0:33:00.400 --> 0:33:02.680
<v Speaker 1>few different directions it could go in that I could

0:33:02.720 --> 0:33:05.640
<v Speaker 1>I could imagine somebody saying, uh, that is something I

0:33:06.040 --> 0:33:15.000
<v Speaker 1>want to be buried than now. I want to come

0:33:15.000 --> 0:33:21.000
<v Speaker 1>back to the concept of gears in biology because for

0:33:21.080 --> 0:33:24.240
<v Speaker 1>a long time. While there was probably no known example

0:33:24.760 --> 0:33:28.600
<v Speaker 1>of a working gear in the in the biological world,

0:33:28.760 --> 0:33:34.080
<v Speaker 1>there have been observations before of animals having appendages certainly

0:33:34.200 --> 0:33:37.840
<v Speaker 1>look like toothed gears. And my favorite, uh instance I

0:33:37.880 --> 0:33:41.600
<v Speaker 1>came across here is a creature called the wheel bug

0:33:41.720 --> 0:33:46.800
<v Speaker 1>or Aeralists cristatus. This is a type of predatory assassin

0:33:46.920 --> 0:33:51.840
<v Speaker 1>bug that preys on all kinds of insects, including a fids, caterpillars, beetles,

0:33:51.880 --> 0:33:54.760
<v Speaker 1>and bees. I found some very gnarly looking images of

0:33:54.760 --> 0:34:00.680
<v Speaker 1>of caterpillar mutilation. Yeah, I don't think i'd really seen

0:34:00.800 --> 0:34:05.400
<v Speaker 1>this species before, these creatures before, but yeah, they're quite

0:34:06.080 --> 0:34:07.840
<v Speaker 1>cool looking. It kind of looks like it has some

0:34:07.880 --> 0:34:10.960
<v Speaker 1>sort of a gear emerging from its back. Also, it

0:34:11.280 --> 0:34:14.440
<v Speaker 1>reminds me of a buzz saw or perhaps to some

0:34:14.560 --> 0:34:19.360
<v Speaker 1>degree of something like a stegasuris or or or demetrodon

0:34:19.520 --> 0:34:22.200
<v Speaker 1>or something. Yeah. So it's called the wheelbug, but I

0:34:22.239 --> 0:34:24.280
<v Speaker 1>think maybe a better name would be the gear bug,

0:34:24.360 --> 0:34:26.200
<v Speaker 1>because it really does look like it's it's got this

0:34:26.440 --> 0:34:29.799
<v Speaker 1>toothed gear poking up out of the back of its

0:34:29.840 --> 0:34:32.160
<v Speaker 1>carapace right sort of behind where the head is up

0:34:32.160 --> 0:34:35.359
<v Speaker 1>on the thorax and so I was reading about this

0:34:35.480 --> 0:34:39.960
<v Speaker 1>insect on the University of Florida Department of in Toropology's website.

0:34:40.000 --> 0:34:42.480
<v Speaker 1>They've got a good profile on it there, and they

0:34:42.480 --> 0:34:46.200
<v Speaker 1>say in adulthood, this insect tends to measure about one

0:34:46.280 --> 0:34:49.400
<v Speaker 1>to one and a quarter inches long, and then quote,

0:34:49.760 --> 0:34:53.280
<v Speaker 1>this assassin bug is a dark, robust creature with long

0:34:53.400 --> 0:34:56.759
<v Speaker 1>legs and antinnie, a stout beak, large eyes on, a

0:34:56.840 --> 0:35:01.240
<v Speaker 1>slim head, and a prominent thoracic semi a circular crest

0:35:01.400 --> 0:35:05.319
<v Speaker 1>that resembles a cog wheel or a chicken's comb. This

0:35:05.400 --> 0:35:08.319
<v Speaker 1>is the only insects species in the United States with

0:35:08.360 --> 0:35:11.600
<v Speaker 1>such a crest. The number of teeth or tubercles in

0:35:11.640 --> 0:35:16.719
<v Speaker 1>the crest varies from eight to twelve. Now immediately you're

0:35:16.760 --> 0:35:18.920
<v Speaker 1>you're probably wondering, as I was, what does it do?

0:35:19.160 --> 0:35:21.920
<v Speaker 1>What what is the gear on its back do? I

0:35:21.960 --> 0:35:26.320
<v Speaker 1>could not find any solid research alluding to a purpose

0:35:26.400 --> 0:35:28.840
<v Speaker 1>of this cog wheel crest. That there may be something

0:35:28.840 --> 0:35:31.120
<v Speaker 1>out there that I couldn't come across, or it may

0:35:31.200 --> 0:35:33.640
<v Speaker 1>just be unknown. I think it's more likely unknown at

0:35:33.719 --> 0:35:38.200
<v Speaker 1>this point what this gear crest is for, in which case,

0:35:38.239 --> 0:35:41.080
<v Speaker 1>barring other knowledge, I guess you might assume that this

0:35:41.200 --> 0:35:43.920
<v Speaker 1>purpose might have something to do with appearance rather than

0:35:43.960 --> 0:35:47.960
<v Speaker 1>any mechanical function. Maybe it plays a visual role in

0:35:47.960 --> 0:35:51.399
<v Speaker 1>interactions with predators or prey or mates, or maybe it's

0:35:51.440 --> 0:35:55.759
<v Speaker 1>a defensive somehow. It's hard to tell um but apparently.

0:35:56.000 --> 0:35:58.920
<v Speaker 1>Another interesting fact is that the wheel is absent in

0:35:59.040 --> 0:36:02.200
<v Speaker 1>juvenile so if you look at nymphs of this assassin bug,

0:36:02.560 --> 0:36:05.400
<v Speaker 1>they don't have it. It only appears in adults after

0:36:05.520 --> 0:36:09.320
<v Speaker 1>the insects final molting, so once it reaches its ultimate form,

0:36:09.520 --> 0:36:12.719
<v Speaker 1>then it's got the gear. But whatever it's for, it

0:36:12.840 --> 0:36:15.759
<v Speaker 1>does not appear to be a functional gear. It just

0:36:15.920 --> 0:36:18.480
<v Speaker 1>looks like one. I mean, for one thing, it can't rotate,

0:36:18.640 --> 0:36:21.960
<v Speaker 1>and there's nothing really that it could clearly be rotating

0:36:22.000 --> 0:36:25.520
<v Speaker 1>against locking its teeth with. It's just a crest that

0:36:25.640 --> 0:36:28.040
<v Speaker 1>kind of looks like a gear or like a like

0:36:28.080 --> 0:36:31.359
<v Speaker 1>a chicken's comb. Now, as amazing as these insects look,

0:36:32.000 --> 0:36:33.879
<v Speaker 1>one thing I should probably note is that you don't

0:36:33.920 --> 0:36:36.839
<v Speaker 1>want to try to handle it, because apparently wheelbugs can

0:36:36.880 --> 0:36:41.040
<v Speaker 1>produce an extremely painful bite that that lingers for days.

0:36:42.000 --> 0:36:44.080
<v Speaker 1>But but anyway, this animal is worth looking up. There

0:36:44.080 --> 0:36:46.480
<v Speaker 1>are actually a few other interesting things about them. For

0:36:46.600 --> 0:36:49.080
<v Speaker 1>one thing, they do appear to practice some amount of

0:36:49.080 --> 0:36:55.360
<v Speaker 1>sexual cannibalism. Also they there is another mystery about them

0:36:55.440 --> 0:36:58.360
<v Speaker 1>where they produce a vocalization. I think they create a

0:36:58.440 --> 0:37:01.719
<v Speaker 1>chirping sound by a certain type of a friction mechanism

0:37:01.719 --> 0:37:04.440
<v Speaker 1>where they rub one part of their body on another.

0:37:04.480 --> 0:37:07.520
<v Speaker 1>I think maybe they're rubbing some uh they're either their

0:37:07.600 --> 0:37:09.520
<v Speaker 1>beak or four legs. I think it was the beak

0:37:09.600 --> 0:37:11.560
<v Speaker 1>on an on a part on the underside of their

0:37:11.640 --> 0:37:15.480
<v Speaker 1>carapacet and it creates this chirping And scientists, as far

0:37:15.480 --> 0:37:17.520
<v Speaker 1>as I could tell, don't know what this is for yet.

0:37:18.000 --> 0:37:21.279
<v Speaker 1>But coming back to the idea of an actual mechanically

0:37:21.520 --> 0:37:26.120
<v Speaker 1>functional gear in biology, as of a study published in

0:37:26.160 --> 0:37:30.120
<v Speaker 1>the year in the journal Science, there actually is at

0:37:30.200 --> 0:37:35.520
<v Speaker 1>least one known animal that does contain working toothed gears

0:37:35.560 --> 0:37:37.359
<v Speaker 1>within its body, and as far as I could tell,

0:37:37.400 --> 0:37:40.000
<v Speaker 1>this is also still the only animal that has this

0:37:40.080 --> 0:37:43.720
<v Speaker 1>feature that that's known, and this animal is a type

0:37:43.719 --> 0:37:48.560
<v Speaker 1>of plant hopper insect known as S. S. Colliup tratis.

0:37:48.880 --> 0:37:52.080
<v Speaker 1>The paper that reported the discovery of this animal gear was,

0:37:52.640 --> 0:37:56.640
<v Speaker 1>like I said, published in Science in by authors Malcolm

0:37:56.760 --> 0:38:00.200
<v Speaker 1>Burrows and Gregory Sutton, who both at the time worked

0:38:00.200 --> 0:38:03.600
<v Speaker 1>in the biological sciences at Cambridge University, and it was

0:38:03.640 --> 0:38:10.040
<v Speaker 1>called interacting gears synchronized propulsive leg movements in a jumping insect. Now, Rob,

0:38:10.080 --> 0:38:12.440
<v Speaker 1>I've got some images that you can that you can

0:38:12.480 --> 0:38:15.239
<v Speaker 1>look at here while I'm talking about this, there's some

0:38:15.320 --> 0:38:20.440
<v Speaker 1>really interesting electron micrographs of of these these gear pieces.

0:38:20.440 --> 0:38:23.680
<v Speaker 1>They truly don't really look animal, right, you know, they

0:38:23.920 --> 0:38:26.239
<v Speaker 1>do look like a machine. And I always love that

0:38:26.280 --> 0:38:28.560
<v Speaker 1>when you like zoom way in on the parts of

0:38:28.560 --> 0:38:30.920
<v Speaker 1>an insect or something and you get that hr Geeger

0:38:31.000 --> 0:38:33.120
<v Speaker 1>space where you can't tell if what you're looking at

0:38:33.200 --> 0:38:36.600
<v Speaker 1>is is natural or artificial. Yeah, because there's one image

0:38:36.600 --> 0:38:40.239
<v Speaker 1>here of believe a nymph um of of this uh,

0:38:40.640 --> 0:38:44.120
<v Speaker 1>of this species, and you know it's it's cute, but

0:38:44.160 --> 0:38:46.759
<v Speaker 1>it doesn't really look like anything other than some sort

0:38:46.800 --> 0:38:49.640
<v Speaker 1>of a fly or insect um. But yeah, when you

0:38:49.640 --> 0:38:53.520
<v Speaker 1>start looking at these these electron microscope images, yeah, then

0:38:53.640 --> 0:38:57.080
<v Speaker 1>then it takes on this bio mechanical kind of reality

0:38:57.160 --> 0:39:00.719
<v Speaker 1>and it's yeah, it's quite unlike anything else. It's so,

0:39:01.000 --> 0:39:03.919
<v Speaker 1>what is this animal, the the s s. Coleopterus, Well,

0:39:04.040 --> 0:39:06.960
<v Speaker 1>this is an insect that is again known as a

0:39:07.000 --> 0:39:11.080
<v Speaker 1>plant hopper. I think you'll normally find them crawling around

0:39:11.200 --> 0:39:14.279
<v Speaker 1>on bits of ivy in Europe and North Africa, and

0:39:14.320 --> 0:39:16.720
<v Speaker 1>so they're they're very very small. They're usually just about

0:39:16.760 --> 0:39:20.880
<v Speaker 1>three millimeters long at maturity um, and so they'll go

0:39:20.920 --> 0:39:25.120
<v Speaker 1>around grazing on ivy leaves. And the discovery that's announced

0:39:25.120 --> 0:39:28.840
<v Speaker 1>in this report is that the juveniles of this species,

0:39:28.880 --> 0:39:32.200
<v Speaker 1>so not the adults, but the nymphs. The juveniles, they

0:39:32.239 --> 0:39:37.920
<v Speaker 1>have these interlocking gear teeth on their back legs which

0:39:37.960 --> 0:39:42.799
<v Speaker 1>allow them to rotate their legs in perfect synchronization when

0:39:42.840 --> 0:39:47.080
<v Speaker 1>they are setting up a jump. So these tiny insects

0:39:47.560 --> 0:39:51.520
<v Speaker 1>have have their main defense against predators. And it's not

0:39:51.520 --> 0:39:54.719
<v Speaker 1>clear exactly what predator this is most adapted against, So

0:39:54.760 --> 0:39:57.000
<v Speaker 1>I don't know if this would be you know, against

0:39:57.000 --> 0:40:00.239
<v Speaker 1>the possibility of being eaten by a large man hold

0:40:00.239 --> 0:40:03.719
<v Speaker 1>that's grazing on foliage, or being pounced on by a

0:40:03.719 --> 0:40:07.720
<v Speaker 1>parasitic wasp or some other kind of smaller insect predator

0:40:07.880 --> 0:40:10.640
<v Speaker 1>or spider or something that's not quite known for sure,

0:40:10.680 --> 0:40:14.040
<v Speaker 1>but but there it is probably some kind of survival

0:40:14.080 --> 0:40:17.920
<v Speaker 1>defensive adaptation that this creature needs to be able to

0:40:18.160 --> 0:40:22.560
<v Speaker 1>jump far and jump fast, and they are one of

0:40:22.640 --> 0:40:25.920
<v Speaker 1>the most amazing jumpers in all of nature. I was

0:40:25.920 --> 0:40:28.520
<v Speaker 1>watching an interview with one of the authors of the study,

0:40:28.560 --> 0:40:31.719
<v Speaker 1>Malcolm Burrows, in which he talks about the jumping mechanism,

0:40:32.040 --> 0:40:35.200
<v Speaker 1>and so the s S insect will take off at

0:40:35.239 --> 0:40:37.960
<v Speaker 1>a at a jump of about five meters per second

0:40:38.320 --> 0:40:40.840
<v Speaker 1>or more than eight miles per hour, which for a

0:40:40.880 --> 0:40:44.840
<v Speaker 1>tiny insect like this is pretty fast. It accelerates to

0:40:44.920 --> 0:40:49.120
<v Speaker 1>its jumping speed in less than a millisecond. And so

0:40:49.640 --> 0:40:54.400
<v Speaker 1>the way Burrows explain this is that this insect experiences

0:40:54.440 --> 0:40:59.239
<v Speaker 1>absolutely unfathomable G forces as it takes off because it's

0:40:59.280 --> 0:41:03.200
<v Speaker 1>acceleration is so fast. He puts it at five hundred

0:41:03.320 --> 0:41:06.680
<v Speaker 1>or even seven hundred g s, which if you look

0:41:06.719 --> 0:41:09.680
<v Speaker 1>at the amount of g's that humans are able to tolerate,

0:41:09.880 --> 0:41:13.520
<v Speaker 1>it's like the amount you can tolerate is a factor

0:41:13.640 --> 0:41:17.239
<v Speaker 1>of how long you are subjected to them. But you know,

0:41:17.840 --> 0:41:21.440
<v Speaker 1>usually for humans, the the the acceleration we can tolerate

0:41:21.440 --> 0:41:24.560
<v Speaker 1>in gs, the maximum is like a factor of a

0:41:24.600 --> 0:41:28.759
<v Speaker 1>few tens, you know, but this would be hundreds. Yeah,

0:41:28.800 --> 0:41:32.440
<v Speaker 1>this is impressive. So this insect has this amazingly fast,

0:41:32.560 --> 0:41:35.879
<v Speaker 1>amazingly powerful jump that can just catapult. It's like it's

0:41:35.880 --> 0:41:38.759
<v Speaker 1>shooting itself out of a cannon using the power of

0:41:38.800 --> 0:41:42.719
<v Speaker 1>its two hind legs. And what was documented in this

0:41:42.800 --> 0:41:47.520
<v Speaker 1>paper by by Burrows and Sutton is that they they

0:41:47.600 --> 0:41:52.440
<v Speaker 1>captured imagery of gear mechanisms on the hind legs interlocking

0:41:52.560 --> 0:41:57.879
<v Speaker 1>using electron microscopy and high speed video recording UH and

0:41:57.880 --> 0:42:00.960
<v Speaker 1>and again the purpose that they found is that these

0:42:01.080 --> 0:42:05.080
<v Speaker 1>UH interlocking gear teeth are useful for synchronizing the motion

0:42:05.200 --> 0:42:09.279
<v Speaker 1>of the legs. Now, why would synchronization of the leg

0:42:09.360 --> 0:42:12.120
<v Speaker 1>movement be so important that it would have its own

0:42:12.200 --> 0:42:15.360
<v Speaker 1>evolved mechanism, which is, as far as we know, unique

0:42:15.360 --> 0:42:19.440
<v Speaker 1>in the animal kingdom. Well, apparently it's because coordination of

0:42:19.480 --> 0:42:23.680
<v Speaker 1>the timing on the two legs is necessary for this

0:42:23.760 --> 0:42:28.000
<v Speaker 1>incredibly powerful sort of cannon shot jump to be effective.

0:42:28.760 --> 0:42:31.000
<v Speaker 1>So I was reading about this in one of the

0:42:31.000 --> 0:42:35.080
<v Speaker 1>press releases about the about the study, and what the

0:42:35.120 --> 0:42:39.600
<v Speaker 1>author's here found is that a lack of synchronization between

0:42:39.640 --> 0:42:43.080
<v Speaker 1>the legs at launch could cause an uncontrolled what they

0:42:43.120 --> 0:42:46.719
<v Speaker 1>call yaw rotation. So if you if you picture an airplane,

0:42:47.200 --> 0:42:49.760
<v Speaker 1>you know you've got the different uh, the different ways

0:42:49.800 --> 0:42:51.759
<v Speaker 1>that you can change the motion of the airplane. You've

0:42:51.760 --> 0:42:54.960
<v Speaker 1>got pitch role and yaw, So pitch would be tipping

0:42:55.000 --> 0:42:58.239
<v Speaker 1>the nose of the airplane up or down. Role would

0:42:58.280 --> 0:43:00.880
<v Speaker 1>be raising, that would be roll ling the airplane, you know,

0:43:00.960 --> 0:43:04.320
<v Speaker 1>raising the wings relative to each other, and then yaw

0:43:04.480 --> 0:43:08.040
<v Speaker 1>is twisting side to side. If you can imagine an

0:43:08.040 --> 0:43:11.920
<v Speaker 1>insect that's sort of catapulting itself in this spectacular jump

0:43:11.960 --> 0:43:14.520
<v Speaker 1>with two with pushing off with the two hind legs

0:43:14.520 --> 0:43:18.160
<v Speaker 1>at the same time, if one leg pushes off faster

0:43:18.280 --> 0:43:20.640
<v Speaker 1>than the other one, you can imagine that it's going

0:43:20.680 --> 0:43:23.640
<v Speaker 1>to send the insects sort of twisting out of control

0:43:23.719 --> 0:43:27.520
<v Speaker 1>in its path, which obviously interferes with landing where it's

0:43:27.520 --> 0:43:30.880
<v Speaker 1>trying to land now, one question would be why the

0:43:30.960 --> 0:43:34.799
<v Speaker 1>need for a mechanical gear for synchronization? What why does

0:43:34.800 --> 0:43:38.640
<v Speaker 1>this need to be on the insects exoskeleton. Why wouldn't

0:43:38.640 --> 0:43:41.719
<v Speaker 1>the insect just synchronize the action of its legs through

0:43:41.760 --> 0:43:45.120
<v Speaker 1>the nervous system like pretty much any other animal would, right,

0:43:45.480 --> 0:43:49.600
<v Speaker 1>Like if you are jumping, you are able to synchronize

0:43:49.640 --> 0:43:53.080
<v Speaker 1>the motion of your legs through neural mechanisms with your

0:43:53.080 --> 0:43:56.520
<v Speaker 1>brain and your nervous system sort of trying to control

0:43:56.640 --> 0:43:59.799
<v Speaker 1>them through normal motor function, and then getting feedback from

0:43:59.800 --> 0:44:02.480
<v Speaker 1>the feelings of your legs from like your appropriate reception

0:44:02.600 --> 0:44:07.440
<v Speaker 1>and stuff and tactle sensations to to try to time

0:44:07.480 --> 0:44:12.520
<v Speaker 1>the jump together and correct for any imbalances in real time. Well,

0:44:12.680 --> 0:44:15.640
<v Speaker 1>apparently the insect can't do that because the problem is

0:44:15.719 --> 0:44:20.160
<v Speaker 1>it's jump is too fast to synchronize through the nervous system.

0:44:20.239 --> 0:44:24.120
<v Speaker 1>The acceleration leading into the jump happens so quickly that

0:44:24.200 --> 0:44:28.640
<v Speaker 1>the nervous system cannot do real time feedback to coordinate it.

0:44:29.040 --> 0:44:32.719
<v Speaker 1>So it needs this mechanical lock on the legs themselves

0:44:32.760 --> 0:44:36.360
<v Speaker 1>to make sure synchronization is happening, because the insects nervous

0:44:36.400 --> 0:44:40.080
<v Speaker 1>system can't talk to itself fast enough to make sure

0:44:40.200 --> 0:44:42.759
<v Speaker 1>that the that the jump is on target. In their

0:44:42.800 --> 0:44:45.759
<v Speaker 1>In their press release, author Malcolm Burrows summarized it like

0:44:45.800 --> 0:44:50.120
<v Speaker 1>this quote. The precise synchronization would be impossible to achieve

0:44:50.160 --> 0:44:52.879
<v Speaker 1>through a nervous system, as neural impulses would take far

0:44:53.000 --> 0:44:57.839
<v Speaker 1>too long for the extraordinarily tight coordination required by developing

0:44:57.920 --> 0:45:02.240
<v Speaker 1>mechanical gears. The s s can just send nerve signals

0:45:02.280 --> 0:45:05.160
<v Speaker 1>to its muscles to produce roughly the same amount of force.

0:45:05.640 --> 0:45:08.279
<v Speaker 1>Then if one leg starts to propel the jump, the

0:45:08.320 --> 0:45:13.960
<v Speaker 1>gears will interlock, creating absolute synchronicity and ss. The skeleton

0:45:14.040 --> 0:45:16.600
<v Speaker 1>is used to solve a complex problem that the brain

0:45:16.760 --> 0:45:20.960
<v Speaker 1>and nervous system can't This emphasizes the importance of considering

0:45:20.960 --> 0:45:25.120
<v Speaker 1>the properties of the skeleton in how movement is produced.

0:45:25.840 --> 0:45:28.160
<v Speaker 1>And this was really interesting to me because it also

0:45:28.200 --> 0:45:31.880
<v Speaker 1>comes back to you could maybe even consider this a

0:45:32.400 --> 0:45:37.279
<v Speaker 1>case of sort of supplementing the cognitive abilities of the

0:45:37.320 --> 0:45:41.400
<v Speaker 1>nervous system, sort of embodied cognition, allowing the body to

0:45:41.480 --> 0:45:44.480
<v Speaker 1>do math for you that your brain and nervous system

0:45:44.560 --> 0:45:49.200
<v Speaker 1>can't handle. Yeah, because essentially it's a it's it's a

0:45:49.200 --> 0:45:55.080
<v Speaker 1>physical way of solving a problem that is beyond cognitive ability,

0:45:55.280 --> 0:45:57.879
<v Speaker 1>um and and and and really when we're talking about

0:45:57.880 --> 0:45:59.800
<v Speaker 1>the g forces pulled here and think this is beyond

0:46:00.000 --> 0:46:02.319
<v Speaker 1>base flights. So when we talk about like humans have

0:46:02.400 --> 0:46:04.880
<v Speaker 1>not evolved to travel in space or to deal with

0:46:04.880 --> 0:46:08.360
<v Speaker 1>certain speeds or or physical realities, like this is a

0:46:08.360 --> 0:46:11.160
<v Speaker 1>case here where I mean this this creature is is

0:46:11.280 --> 0:46:15.120
<v Speaker 1>essentially engaging in those kinds of speeds, those kinds of

0:46:15.200 --> 0:46:19.359
<v Speaker 1>rapid accelerations. Uh So, it's yeah, it's fascinating to think

0:46:19.400 --> 0:46:22.120
<v Speaker 1>about here. Yeah, the body moves too fast for the

0:46:22.160 --> 0:46:26.560
<v Speaker 1>nervous system to make sense of, so it just offloads that.

0:46:26.560 --> 0:46:29.640
<v Speaker 1>That computation that the motor parts of the nervous system

0:46:29.719 --> 0:46:33.960
<v Speaker 1>might do naturally, offloads that onto the skeleton. Now, the

0:46:34.040 --> 0:46:37.080
<v Speaker 1>exoskeleton of the insect is doing the math for you,

0:46:37.160 --> 0:46:40.240
<v Speaker 1>kind of like an analog computer would like the antiqua

0:46:40.320 --> 0:46:44.560
<v Speaker 1>theorem mechanism. Wow. Wow. So to take a slightly closer

0:46:44.600 --> 0:46:47.280
<v Speaker 1>look at these teeth, at the gears on the hind legs.

0:46:47.440 --> 0:46:50.960
<v Speaker 1>They're located on the backs of the strong hind legs

0:46:51.000 --> 0:46:54.200
<v Speaker 1>that the s s insect uses to jump um there

0:46:54.200 --> 0:46:57.800
<v Speaker 1>on the parts of the legs known as the trocantera

0:46:57.840 --> 0:47:01.120
<v Speaker 1>and it's actually a human skeleton has rocantera to they're

0:47:01.200 --> 0:47:03.280
<v Speaker 1>they're sort of on the upper part of the femur,

0:47:03.760 --> 0:47:07.320
<v Speaker 1>near where the femur would would connect to the pelvis.

0:47:07.400 --> 0:47:11.359
<v Speaker 1>And these these insects tend to have somewhere between ten

0:47:11.440 --> 0:47:15.200
<v Speaker 1>to twelve teeth on their gears. But while it seems

0:47:15.239 --> 0:47:18.040
<v Speaker 1>to vary between the insects, the insect always has the

0:47:18.120 --> 0:47:21.879
<v Speaker 1>same amount of teeth on each side within itself. Each

0:47:21.960 --> 0:47:26.160
<v Speaker 1>tooth is about eighty micrometers wide, so eighty millionths of

0:47:26.160 --> 0:47:30.400
<v Speaker 1>a meter. And there are some interesting engineered features of

0:47:30.400 --> 0:47:33.120
<v Speaker 1>of these gear teeth within the body that have been

0:47:33.160 --> 0:47:36.000
<v Speaker 1>created by the evolutionary process that gives rise to them. Here,

0:47:36.360 --> 0:47:39.879
<v Speaker 1>the teeth have rounded corners at the point of contact,

0:47:39.960 --> 0:47:42.680
<v Speaker 1>and this is useful apparently because it would help prevent

0:47:42.760 --> 0:47:46.080
<v Speaker 1>the gears from being sheared off or broken off if

0:47:46.120 --> 0:47:49.439
<v Speaker 1>there is a slight misalignment during a jump. And then

0:47:49.680 --> 0:47:53.160
<v Speaker 1>another interesting thing about them is that they are differently

0:47:53.239 --> 0:47:56.760
<v Speaker 1>shaped than most gears we use in the technological world,

0:47:56.800 --> 0:48:02.719
<v Speaker 1>because usually gears made by humans tend to have symmetrical teeth, right,

0:48:02.800 --> 0:48:05.560
<v Speaker 1>you know, there's sort of curved straight out from the

0:48:06.239 --> 0:48:10.520
<v Speaker 1>gear strip surface, but in these the teeth are not

0:48:10.600 --> 0:48:13.520
<v Speaker 1>quite symmetrical. They're sort of angled out. And it's because

0:48:13.600 --> 0:48:17.120
<v Speaker 1>this gear only needs to work one way, so like

0:48:17.200 --> 0:48:19.400
<v Speaker 1>after the launch is done, the gear teeth can just

0:48:19.480 --> 0:48:21.759
<v Speaker 1>separate from each other and they don't need to roll

0:48:21.880 --> 0:48:25.200
<v Speaker 1>backwards in in the direction opposite from which they came.

0:48:25.320 --> 0:48:28.000
<v Speaker 1>It's a one way gear. Yeah, and you definitely get

0:48:28.040 --> 0:48:30.520
<v Speaker 1>that from looking at the image. It feels like some

0:48:30.600 --> 0:48:34.920
<v Speaker 1>sort of a biomechanical um, you know, firing mechanism, right,

0:48:34.920 --> 0:48:37.360
<v Speaker 1>A firing mechanism is a is a good way to

0:48:37.360 --> 0:48:39.600
<v Speaker 1>compare it, because again, it doesn't go both ways and

0:48:39.680 --> 0:48:41.480
<v Speaker 1>it doesn't need to roll all the way around. It's

0:48:41.520 --> 0:48:44.280
<v Speaker 1>just sort of a strip of interlocking teeth that doesn't

0:48:44.320 --> 0:48:46.799
<v Speaker 1>complete a full circle. And it only and it only

0:48:46.920 --> 0:48:50.040
<v Speaker 1>rolls one way only on launch. Yeah, Like it kind

0:48:50.080 --> 0:48:52.480
<v Speaker 1>of looks like if hr gear designed a flint lock.

0:48:53.000 --> 0:48:58.040
<v Speaker 1>Uh yeah, or maybe if David Cronenberg did you know, yeah, oh,

0:48:58.120 --> 0:49:00.520
<v Speaker 1>but so there was a really interesting thing about the research,

0:49:00.600 --> 0:49:03.799
<v Speaker 1>the question of how did they figure out that these

0:49:03.840 --> 0:49:07.560
<v Speaker 1>gear teeth locked for synchronization while launching the jump? Right? Like,

0:49:07.600 --> 0:49:11.360
<v Speaker 1>how how did they observe that? Well, apparently the authors

0:49:11.400 --> 0:49:15.600
<v Speaker 1>here used a dead insect. They used an insect corpse.

0:49:16.239 --> 0:49:19.200
<v Speaker 1>And what they did was they they took the dead

0:49:19.239 --> 0:49:22.960
<v Speaker 1>insects legs and rotated them back into the jump launching position.

0:49:23.880 --> 0:49:27.439
<v Speaker 1>And then the researchers used an electrical stimulus to cause

0:49:27.480 --> 0:49:30.680
<v Speaker 1>a contraction in the jumping muscle of only one of

0:49:30.760 --> 0:49:34.319
<v Speaker 1>the legs. Okay, so they they stimulate only one leg

0:49:34.400 --> 0:49:36.920
<v Speaker 1>as if it has been told by the brain to jump.

0:49:37.480 --> 0:49:40.680
<v Speaker 1>But because the gear teeth were locked. When the legs

0:49:40.719 --> 0:49:45.719
<v Speaker 1>were in jump readying position, the insects legs both performed

0:49:45.800 --> 0:49:48.560
<v Speaker 1>the launching motion, even the dead leg on the other

0:49:48.600 --> 0:49:52.120
<v Speaker 1>side that had not been electrically stimulated, and the insect

0:49:52.200 --> 0:49:55.400
<v Speaker 1>leapt straightforward, so you could stimulate only one of the

0:49:55.440 --> 0:49:58.080
<v Speaker 1>two legs, kind of like how an airplane can fly

0:49:58.200 --> 0:50:00.799
<v Speaker 1>with only one engine. You know, you only need to

0:50:00.880 --> 0:50:03.680
<v Speaker 1>stimulate one of the legs, and the gears keep both

0:50:03.760 --> 0:50:07.640
<v Speaker 1>legs locked in sync. Now there's another interesting question here,

0:50:07.760 --> 0:50:10.759
<v Speaker 1>why only the juveniles I think I already mentioned that

0:50:10.840 --> 0:50:16.400
<v Speaker 1>the adult insects don't have these interlocking gear teeth. They've

0:50:16.440 --> 0:50:19.520
<v Speaker 1>got a feature that's more common, more like what you'd

0:50:19.520 --> 0:50:21.840
<v Speaker 1>see in a lot of other jumping insects, which is

0:50:21.840 --> 0:50:25.360
<v Speaker 1>not gear teeth, but just sort of um bumps or

0:50:25.520 --> 0:50:29.160
<v Speaker 1>friction pads, so their back legs might touch each other

0:50:29.960 --> 0:50:33.920
<v Speaker 1>and and the touching their helps keep the jump synchronized.

0:50:33.960 --> 0:50:36.600
<v Speaker 1>But they don't actually have interlocking teeth. It's more just

0:50:36.680 --> 0:50:40.359
<v Speaker 1>kind of like pushing to surfaces together that grip each

0:50:40.360 --> 0:50:44.720
<v Speaker 1>other pretty well. In another study by Burrows, he noted

0:50:44.800 --> 0:50:48.800
<v Speaker 1>that this is achieved by quote mechanical actions between small

0:50:48.920 --> 0:50:53.759
<v Speaker 1>protrusions from each trochantera, which fluoresce bright blue under specific

0:50:53.760 --> 0:50:57.440
<v Speaker 1>wavelengths of ultraviolet light and which touch at the midline

0:50:57.440 --> 0:50:59.920
<v Speaker 1>when the legs are cocked before a jump. So they

0:51:00.000 --> 0:51:02.680
<v Speaker 1>adults are touching parts of their back legs together to

0:51:02.760 --> 0:51:05.320
<v Speaker 1>help synchronize a jump, but they don't have gear teeth.

0:51:05.960 --> 0:51:10.319
<v Speaker 1>And the hypothesized explanation for the difference here is that

0:51:10.840 --> 0:51:14.879
<v Speaker 1>is this Insects go through periods of molting as they grow. Right,

0:51:14.920 --> 0:51:17.600
<v Speaker 1>So an insect, as it gets bigger and bigger, it

0:51:17.640 --> 0:51:21.520
<v Speaker 1>will shed its old hard exoskeleton and then it will

0:51:21.560 --> 0:51:25.160
<v Speaker 1>grow bigger and allow a new exoskeleton to harden. But

0:51:25.239 --> 0:51:29.120
<v Speaker 1>the adult exoskeleton at full maturity, it lacks these interlocking

0:51:29.200 --> 0:51:32.759
<v Speaker 1>gear teeth. And the idea is maybe the adults don't

0:51:32.800 --> 0:51:36.120
<v Speaker 1>have the teeth because if the teeth on the jumping

0:51:36.160 --> 0:51:39.680
<v Speaker 1>mechanism were to break or get sheared off but by error,

0:51:40.200 --> 0:51:43.200
<v Speaker 1>this would sort of break their ability to jump. And

0:51:43.239 --> 0:51:46.239
<v Speaker 1>so once the adult is in full molted form and

0:51:46.280 --> 0:51:49.640
<v Speaker 1>it's not going to shed its exoskeleton again, it needs

0:51:49.680 --> 0:51:53.400
<v Speaker 1>to have a less fragile mechanism. But the younger's, the

0:51:53.680 --> 0:51:56.800
<v Speaker 1>younger ones the juveniles, because they will go through multiple

0:51:56.840 --> 0:51:59.719
<v Speaker 1>moltings and can grow new gear teeth if they're old

0:51:59.760 --> 0:52:02.879
<v Speaker 1>gear teeth break, they pay less of a price for

0:52:02.960 --> 0:52:07.399
<v Speaker 1>having this somewhat fragile mechanism. Okay, so here we see

0:52:07.400 --> 0:52:10.719
<v Speaker 1>sort of in in their early stages the advantages of

0:52:10.800 --> 0:52:15.120
<v Speaker 1>having an an exoskeleton, and then in in later life

0:52:15.200 --> 0:52:18.479
<v Speaker 1>the disadvantages of having an exo skeleton, and that you're

0:52:18.480 --> 0:52:20.640
<v Speaker 1>not going to get another one, right, And so when

0:52:20.640 --> 0:52:22.359
<v Speaker 1>you're not going to get another one, it makes more

0:52:22.360 --> 0:52:26.040
<v Speaker 1>sense for evolution to supply you with more durable mechanisms

0:52:26.080 --> 0:52:28.759
<v Speaker 1>that aren't going to possibly like kill you if if

0:52:28.800 --> 0:52:32.160
<v Speaker 1>they break, right, there would be a survival advantage in

0:52:32.360 --> 0:52:35.560
<v Speaker 1>having a jumping mechanism that's not going to it's not

0:52:35.560 --> 0:52:39.120
<v Speaker 1>going to be like a Boba Fett's uh jet pack

0:52:39.280 --> 0:52:41.439
<v Speaker 1>firing off at a weird angle and sending you into

0:52:41.640 --> 0:52:46.200
<v Speaker 1>the sarlac. Right, But that's just a hypothesized explanation for

0:52:46.280 --> 0:52:49.040
<v Speaker 1>the difference between the juveniles and adults. Ultimately, we don't

0:52:49.040 --> 0:52:51.920
<v Speaker 1>know for sure there and as far as I can tell,

0:52:51.960 --> 0:52:55.080
<v Speaker 1>this is still the only known tooth to gear in

0:52:55.120 --> 0:52:57.959
<v Speaker 1>the animal kingdom. That there may have been something since

0:52:58.000 --> 0:53:00.239
<v Speaker 1>then that I wasn't able to track down, but looks

0:53:00.239 --> 0:53:02.799
<v Speaker 1>like this is still the only one. Yeah, well, this

0:53:02.880 --> 0:53:05.040
<v Speaker 1>is fascinating. It kind of brings me back to the

0:53:05.520 --> 0:53:10.240
<v Speaker 1>biobmetics question earlier. You know, um in evolution solving particular

0:53:10.280 --> 0:53:14.080
<v Speaker 1>engineering problems over time, and this is an example where

0:53:14.560 --> 0:53:18.319
<v Speaker 1>the the engineering problem is extreme enough that and the

0:53:18.480 --> 0:53:22.719
<v Speaker 1>and the circumstances of its its lifespan enable the sort

0:53:22.719 --> 0:53:26.560
<v Speaker 1>of answer to evolve and take place. Yeah. Yeah, can

0:53:26.560 --> 0:53:28.600
<v Speaker 1>you imagine if you had gear teeth on your inner

0:53:28.640 --> 0:53:33.439
<v Speaker 1>thighs that helps you jump? It seems uncomfortable. Yeah, yeah,

0:53:33.920 --> 0:53:36.720
<v Speaker 1>I'd have to have an exoskeleton too for this place.

0:53:36.880 --> 0:53:38.279
<v Speaker 1>Or yeah, I'd have to have some other kind of

0:53:38.320 --> 0:53:41.800
<v Speaker 1>weird arrangement, like you would have to be bone spurs

0:53:42.040 --> 0:53:44.640
<v Speaker 1>or keith that grow back, I guess, because that would

0:53:44.640 --> 0:53:46.640
<v Speaker 1>again you'd have to have the situation of what what

0:53:46.640 --> 0:53:48.160
<v Speaker 1>do you do about the wear and tear of this

0:53:49.200 --> 0:53:51.680
<v Speaker 1>the physical mechanics here, I mean, it doesn't really make

0:53:51.719 --> 0:53:54.040
<v Speaker 1>sense for our bodies because that wouldn't that wouldn't be

0:53:54.080 --> 0:53:56.239
<v Speaker 1>how we jump anyway, or like I need to work

0:53:56.280 --> 0:53:59.239
<v Speaker 1>differently for that to make sense. Yeah. Yeah, So again

0:53:59.280 --> 0:54:03.120
<v Speaker 1>we come down to a very specific evolved answer to

0:54:03.160 --> 0:54:05.600
<v Speaker 1>a specific problem that yeah, you're just not going to

0:54:05.680 --> 0:54:08.640
<v Speaker 1>see in in in other organisms. But I am still

0:54:08.640 --> 0:54:12.040
<v Speaker 1>in memorative the idea that in a way, these these

0:54:12.080 --> 0:54:15.640
<v Speaker 1>gear teeth on the insects legs are a kind of computer.

0:54:16.120 --> 0:54:19.520
<v Speaker 1>They're doing a kind of mathematical processing for the animal.

0:54:19.840 --> 0:54:23.600
<v Speaker 1>This is the this is the computer of the thighs. Yeah.

0:54:23.840 --> 0:54:26.600
<v Speaker 1>And and also it's interesting too that no matter how

0:54:27.440 --> 0:54:30.200
<v Speaker 1>no matter how much you know, humanity clung to the

0:54:30.200 --> 0:54:32.319
<v Speaker 1>wheel and to gears and and saw this as their

0:54:32.360 --> 0:54:37.000
<v Speaker 1>technological achievement. Here we have an example of evolution once more,

0:54:37.160 --> 0:54:40.920
<v Speaker 1>beating humanity to the punch. Uh. So, well, before the

0:54:41.160 --> 0:54:45.160
<v Speaker 1>Greeks of Alexandria were devising their uh their gear you

0:54:45.160 --> 0:54:49.640
<v Speaker 1>know complexities. Uh, this creature already had the gears right

0:54:49.680 --> 0:54:54.439
<v Speaker 1>there in its thighs. These gears are hopping. Yeah. Well

0:54:54.440 --> 0:54:58.480
<v Speaker 1>this was fun. I enjoyed talking about everything from we

0:54:58.480 --> 0:55:00.920
<v Speaker 1>had a little bit of an invention episode owed uh

0:55:00.960 --> 0:55:03.000
<v Speaker 1>in here we had some biology, we had a little

0:55:03.000 --> 0:55:07.160
<v Speaker 1>bit of mythology and folklore, so it would be interesting

0:55:07.200 --> 0:55:08.480
<v Speaker 1>to come back to this and and we talked about

0:55:08.520 --> 0:55:13.000
<v Speaker 1>potentially covering screws and screws in nature in this episode,

0:55:13.000 --> 0:55:15.719
<v Speaker 1>but perhaps that would make for its own future episode.

0:55:15.960 --> 0:55:18.120
<v Speaker 1>Oh yeah, there are actually a few things in nature

0:55:18.160 --> 0:55:21.200
<v Speaker 1>that you could argue or screws. Yeah, and then and

0:55:21.200 --> 0:55:23.799
<v Speaker 1>and of course the invention of the screw and uh

0:55:23.800 --> 0:55:27.040
<v Speaker 1>and so forth is also quite interesting. All Right, we're

0:55:27.040 --> 0:55:28.759
<v Speaker 1>gonna go and close it up then, but we'd love

0:55:28.800 --> 0:55:32.120
<v Speaker 1>to hear from everyone out there. Um certainly reach out

0:55:32.120 --> 0:55:34.280
<v Speaker 1>to us, get in touch with us. In the meantime,

0:55:34.320 --> 0:55:35.840
<v Speaker 1>if you want to check out other episodes of Stuff

0:55:35.840 --> 0:55:37.960
<v Speaker 1>to Blow Your Mind Core episodes publishing the Stuff to

0:55:37.960 --> 0:55:41.760
<v Speaker 1>Blow Your Mind podcast feed on Tuesdays and Thursdays, sandwich

0:55:41.800 --> 0:55:44.840
<v Speaker 1>between them, we have an Artifact episode or for the

0:55:44.880 --> 0:55:47.080
<v Speaker 1>months of September and October. Anyway, it's going to be

0:55:47.120 --> 0:55:50.120
<v Speaker 1>the Monster Fact. It's gonna we're gonna take on more

0:55:50.120 --> 0:55:53.960
<v Speaker 1>of a monstrous form for the holidays here and then

0:55:53.960 --> 0:55:56.840
<v Speaker 1>it will likely revert back to the Artifact. We have

0:55:57.239 --> 0:55:59.960
<v Speaker 1>listener mail on Mondays. We have a little Weird House

0:56:00.000 --> 0:56:01.520
<v Speaker 1>in them on Friday, so that's our time just to

0:56:01.520 --> 0:56:03.640
<v Speaker 1>discuss a weird film, and then we have a rerun

0:56:04.280 --> 0:56:07.080
<v Speaker 1>over the weekend. Huge thanks as always to our excellent

0:56:07.120 --> 0:56:10.440
<v Speaker 1>audio producer Seth Nicholas Johnson. If you would like to

0:56:10.480 --> 0:56:12.760
<v Speaker 1>get in touch with us with feedback on this episode

0:56:12.840 --> 0:56:15.200
<v Speaker 1>or any other suggest topic for the future, just to

0:56:15.280 --> 0:56:17.960
<v Speaker 1>say hello, you can email us at contact that Stuff

0:56:18.000 --> 0:56:28.160
<v Speaker 1>to Blow Your Mind. Stuff to Blow Your Mind is

0:56:28.200 --> 0:56:30.880
<v Speaker 1>production of I Heart Radio. For more podcasts for My

0:56:30.920 --> 0:56:34.000
<v Speaker 1>heart Radio, visit the iHeart Radio app, Apple Podcasts, or

0:56:34.000 --> 0:56:48.280
<v Speaker 1>wherever you're listening to your favorite shows.