1 00:00:01,120 --> 00:00:04,560 Speaker 1: Welcome to Stuff you Should Know from House Stuff Works 2 00:00:04,600 --> 00:00:13,080 Speaker 1: dot com. Hey, I'm welcome to the podcast. I'm Josh 3 00:00:13,119 --> 00:00:17,079 Speaker 1: Clark with Charles W Chuck Bryant and Jerry's over there too, 4 00:00:18,079 --> 00:00:22,120 Speaker 1: and this is stuff you should know the podcast. Man, 5 00:00:22,200 --> 00:00:26,320 Speaker 1: oh man, I would love for people to just lie 6 00:00:26,360 --> 00:00:31,520 Speaker 1: on the wall in the studio. Sometimes get squashed. There's 7 00:00:31,560 --> 00:00:34,000 Speaker 1: a lot of fun prerecord today. People. I hate that 8 00:00:34,040 --> 00:00:35,960 Speaker 1: you miss out on that kind of stuff. But you 9 00:00:35,960 --> 00:00:38,680 Speaker 1: know what, that's a that's for us. We we deserve 10 00:00:38,720 --> 00:00:43,960 Speaker 1: a little something. Yeah, and that's called pre show fun, fun, 11 00:00:44,840 --> 00:00:49,200 Speaker 1: hammering out the details, hammering other details. I thoroughly enjoyed 12 00:00:49,200 --> 00:00:52,159 Speaker 1: researching this one. Oh really, it burned my brain a 13 00:00:52,200 --> 00:00:53,920 Speaker 1: little bit. It burned my brain a little bit too, 14 00:00:53,920 --> 00:00:57,760 Speaker 1: But um, I just I didn't know anything about handedness 15 00:00:58,520 --> 00:01:01,800 Speaker 1: and uh no not don't use your hands much. Well, 16 00:01:01,840 --> 00:01:04,280 Speaker 1: I mean as far as, uh why you are left 17 00:01:04,360 --> 00:01:06,560 Speaker 1: or right handed or ambidextrous. It was all kind of 18 00:01:06,600 --> 00:01:09,720 Speaker 1: new information for me. I feel like I had read 19 00:01:09,760 --> 00:01:12,440 Speaker 1: that Io nine article, which we should give a huge 20 00:01:12,440 --> 00:01:15,360 Speaker 1: shout out because it was forming partially the basis of 21 00:01:15,440 --> 00:01:19,200 Speaker 1: this UM episode. Yeah, why are so few people left handed? 22 00:01:19,240 --> 00:01:22,479 Speaker 1: From Io nine and they sourced a lot of great 23 00:01:22,480 --> 00:01:25,920 Speaker 1: stuff from Discover magazine and their articles, so and science 24 00:01:26,120 --> 00:01:30,360 Speaker 1: and science, so it's legit. It is legit. Uh, possibly 25 00:01:30,400 --> 00:01:34,960 Speaker 1: even to legit to quit yeah, yeah, which I could 26 00:01:35,000 --> 00:01:37,120 Speaker 1: not do with my left hand. I guess I can't. 27 00:01:37,120 --> 00:01:40,480 Speaker 1: I just did it. You just did to your science 28 00:01:40,480 --> 00:01:46,080 Speaker 1: sign signing to me. I'm equally bad at at doing 29 00:01:46,080 --> 00:01:49,040 Speaker 1: too legit to quit finger motions with either hand. I'm 30 00:01:49,160 --> 00:01:52,480 Speaker 1: right handed, by the way, what about you, I'm right handed, 31 00:01:52,480 --> 00:01:54,600 Speaker 1: but that is weird since you have your mc hammer 32 00:01:54,600 --> 00:01:56,240 Speaker 1: pants on. I thought you would be good at that. 33 00:01:56,240 --> 00:01:58,919 Speaker 1: That's all just it's not hard to put on pants. 34 00:01:59,000 --> 00:02:01,920 Speaker 1: It's hard to do too legit a quit finger motions. Yeah, 35 00:02:01,920 --> 00:02:04,840 Speaker 1: I'm right handed. Um to well, I was about to say, 36 00:02:04,840 --> 00:02:08,200 Speaker 1: to a fault, but heavily heavily right handed, because after 37 00:02:08,240 --> 00:02:10,600 Speaker 1: reading this, I do believe that there is a bit 38 00:02:10,600 --> 00:02:15,200 Speaker 1: of a spectrum. I think, um oh yeah, yeah. I think. 39 00:02:15,400 --> 00:02:18,639 Speaker 1: I think some people are way dominant with their one hand, 40 00:02:18,639 --> 00:02:20,920 Speaker 1: and some people skew more towards you. I can do 41 00:02:20,960 --> 00:02:24,280 Speaker 1: some things with this hand, uh, And some people are ambidexterous, 42 00:02:24,280 --> 00:02:27,440 Speaker 1: which we'll talk about. Very few, though fewer than you. Think, yeah, 43 00:02:27,600 --> 00:02:30,960 Speaker 1: But um, I am heavily, heavily right handed. I cannot 44 00:02:30,960 --> 00:02:38,200 Speaker 1: do many uh what's the word I'm looking for? Um? Fine, 45 00:02:38,960 --> 00:02:41,880 Speaker 1: not like my fine motor skill tasks. I cannot do 46 00:02:42,000 --> 00:02:44,040 Speaker 1: very well with my left hand. I can just like 47 00:02:44,120 --> 00:02:47,359 Speaker 1: club things and smack things and knock stuff over, knock 48 00:02:47,400 --> 00:02:51,680 Speaker 1: stuff over like Frankenstein clearing a table pretty much. What 49 00:02:51,760 --> 00:02:53,720 Speaker 1: about you? And can you do anything with your left hand? 50 00:02:54,040 --> 00:02:57,560 Speaker 1: I used to think I was, you know, pretty much 51 00:02:57,600 --> 00:03:01,000 Speaker 1: just strictly right handed, But then i've it's especially researching this, 52 00:03:01,080 --> 00:03:03,639 Speaker 1: I paid attention, and I'm like, no, I used my 53 00:03:03,639 --> 00:03:05,560 Speaker 1: my left hand a little more than I thought. I'm 54 00:03:05,560 --> 00:03:08,040 Speaker 1: definitely not ambidextrous. And if there is such a thing 55 00:03:08,040 --> 00:03:10,480 Speaker 1: as a dominant hand, it's clearly my right. But this 56 00:03:10,639 --> 00:03:13,600 Speaker 1: this article points out, or actually it was a science 57 00:03:14,160 --> 00:03:18,639 Speaker 1: m article that said, there's there's this idea that there 58 00:03:18,720 --> 00:03:22,360 Speaker 1: isn't a dominant hand, that you have uses for both hands, 59 00:03:22,400 --> 00:03:24,480 Speaker 1: and one kind of specializes in one thing and one 60 00:03:24,520 --> 00:03:27,480 Speaker 1: specializes in another. And the the example they used to 61 00:03:27,480 --> 00:03:31,040 Speaker 1: illustrate that was, um, cutting like meat with a fork 62 00:03:31,040 --> 00:03:33,000 Speaker 1: and knife. Yeah, I was gonna ask you about that, 63 00:03:33,080 --> 00:03:35,920 Speaker 1: you know, Like I was thinking about I was like, oh, yeah, 64 00:03:35,960 --> 00:03:37,400 Speaker 1: I guess I do use the knife pretty well with 65 00:03:37,400 --> 00:03:40,520 Speaker 1: my left hand. I thought, crazy, No, my fork is 66 00:03:40,520 --> 00:03:43,480 Speaker 1: in my left hand, my knife is in my right hand. 67 00:03:44,160 --> 00:03:46,680 Speaker 1: And then I switched the fork over to my right hand. 68 00:03:46,720 --> 00:03:48,240 Speaker 1: That's what I did too. I was gonna ask you that. 69 00:03:48,360 --> 00:03:51,000 Speaker 1: So I'm definitely right handed, but you know my left 70 00:03:51,000 --> 00:03:54,160 Speaker 1: hand does a great job holding the steak in place 71 00:03:54,200 --> 00:03:56,840 Speaker 1: with my fork while I cut it with the knife. Yeah. Well, 72 00:03:56,880 --> 00:03:58,440 Speaker 1: I'll come to think of it, though, I play guitar 73 00:03:58,800 --> 00:04:01,720 Speaker 1: in drums, so I mean I have some left hand skill, 74 00:04:01,760 --> 00:04:04,400 Speaker 1: I guess. Um. And I know if you break your 75 00:04:04,440 --> 00:04:08,360 Speaker 1: dominant hand, you're gonna learn pretty quickly how to adapt. 76 00:04:09,160 --> 00:04:12,920 Speaker 1: So it's possible to learn, uh, if forts to. It's 77 00:04:12,960 --> 00:04:15,200 Speaker 1: all very interesting to me. It is, and we should say, 78 00:04:15,240 --> 00:04:18,480 Speaker 1: if you happen happen just randomly to be listening to 79 00:04:18,520 --> 00:04:24,000 Speaker 1: this episode on August thirteen, Happy National Left Handed Day, 80 00:04:25,120 --> 00:04:26,600 Speaker 1: I looked out. When I looked that up, I was like, 81 00:04:26,640 --> 00:04:28,560 Speaker 1: I wouldn't it be one of those another stuff you 82 00:04:28,560 --> 00:04:32,320 Speaker 1: should know coincidence If this was happened to be released, No, 83 00:04:32,640 --> 00:04:36,640 Speaker 1: not even close. Um. And it's good that left handed 84 00:04:36,640 --> 00:04:39,200 Speaker 1: people have their own day because they've been fairly maligned 85 00:04:39,200 --> 00:04:43,880 Speaker 1: throughout the millennia. Yeah, let's talk about that. Actually, okay, 86 00:04:44,440 --> 00:04:47,880 Speaker 1: Um throughout history. In fact, even if you look at 87 00:04:47,920 --> 00:04:52,359 Speaker 1: the words uh throughout history, there is a you know, 88 00:04:52,760 --> 00:04:56,360 Speaker 1: uh the poopoo left handers. Basically like the word l 89 00:04:56,560 --> 00:05:00,680 Speaker 1: y f T left yeah from Anglo Saxon means weak 90 00:05:01,360 --> 00:05:03,919 Speaker 1: and the words where the word left comes from and 91 00:05:03,960 --> 00:05:07,120 Speaker 1: the word sinister from Latin is the word for left. Yeah. 92 00:05:07,160 --> 00:05:09,719 Speaker 1: Anybody who saw that episode of The Simpsons where Ned 93 00:05:09,720 --> 00:05:13,760 Speaker 1: Flanders opens the left Toorium knows that because because I 94 00:05:13,839 --> 00:05:18,160 Speaker 1: have a sinister reason to invite you all here sinister 95 00:05:18,279 --> 00:05:21,160 Speaker 1: meaning left handed man. And that was when he announced 96 00:05:21,160 --> 00:05:24,159 Speaker 1: the Leftorium. That show was so smart, you know, very smart. 97 00:05:24,240 --> 00:05:26,520 Speaker 1: So many of those jokes like just flew over my 98 00:05:26,560 --> 00:05:31,760 Speaker 1: head back in the day, Well, they're coming back to roost. Uh. 99 00:05:31,800 --> 00:05:36,160 Speaker 1: There's a long list of um countries who have languages 100 00:05:36,360 --> 00:05:40,359 Speaker 1: that link the word right with being good uh and 101 00:05:40,360 --> 00:05:44,080 Speaker 1: the left with being bad or wrong uh. And in 102 00:05:44,200 --> 00:05:47,640 Speaker 1: some countries even making hand gestures with your left hand 103 00:05:47,680 --> 00:05:50,760 Speaker 1: is a no no. Well, and a lot of countries 104 00:05:51,080 --> 00:05:53,640 Speaker 1: are a lot of cultures that eat food with their hands. 105 00:05:54,120 --> 00:05:57,960 Speaker 1: Then utensils. Um. Using the left hand to eat or 106 00:05:58,000 --> 00:06:00,800 Speaker 1: do a lot of things with is considered taboo because 107 00:06:00,880 --> 00:06:03,000 Speaker 1: the right it's exactly right. You use the right hand 108 00:06:03,040 --> 00:06:05,200 Speaker 1: to eat with, use your left hand to wipe with 109 00:06:05,320 --> 00:06:09,080 Speaker 1: right and um, I think if you pay attention and notice, 110 00:06:09,200 --> 00:06:12,359 Speaker 1: I'll bet you have a hand that's dominant and that 111 00:06:13,000 --> 00:06:16,640 Speaker 1: that um activity wipe in your butt. Yeah, yeah, I'm 112 00:06:16,640 --> 00:06:20,760 Speaker 1: alrighty are you? Yeah? Okay? But if you if you 113 00:06:20,800 --> 00:06:23,920 Speaker 1: try the other hand, it will feel very weird. Whatever 114 00:06:24,200 --> 00:06:27,080 Speaker 1: whatever hand you use normally, it's gonna feel weird if 115 00:06:27,120 --> 00:06:30,040 Speaker 1: you use the option, and you'll just send it very messy. Sure. 116 00:06:31,000 --> 00:06:33,280 Speaker 1: I wonder if you had a subconscious thing like you know, 117 00:06:33,360 --> 00:06:35,800 Speaker 1: I was just eating these candy pecons with my right hand, 118 00:06:36,080 --> 00:06:37,800 Speaker 1: and I know I'm gonna go back and eat them 119 00:06:37,839 --> 00:06:39,839 Speaker 1: with my right hand. Oh, I don't even use my 120 00:06:39,880 --> 00:06:42,240 Speaker 1: hands to eat them. I'm a little too germ conscious. 121 00:06:42,279 --> 00:06:45,000 Speaker 1: I scoop food up in the crook of my elbow, 122 00:06:45,520 --> 00:06:48,159 Speaker 1: which is very clean because it doesn't come in contact 123 00:06:48,160 --> 00:06:49,800 Speaker 1: of other stuff, and then I eat out of the 124 00:06:49,800 --> 00:06:54,560 Speaker 1: crook of my elbow. That's pretty funny. Um. So why 125 00:06:54,800 --> 00:06:57,560 Speaker 1: have people been I mean, why have they picked on 126 00:06:57,640 --> 00:07:00,200 Speaker 1: left handed people. There are some theories that is just 127 00:07:00,560 --> 00:07:04,440 Speaker 1: a minority. You know, ten of people are left handed, 128 00:07:04,480 --> 00:07:07,400 Speaker 1: and throughout history minorities have been picked on. That's right, 129 00:07:07,440 --> 00:07:10,160 Speaker 1: this one thing, Um, there's there's at least a couple 130 00:07:10,200 --> 00:07:14,400 Speaker 1: of cultures that equate left handedness with clumsiness. Yeah, that 131 00:07:14,400 --> 00:07:20,240 Speaker 1: makes sense to me. Some hypotheses theorized that UM tools 132 00:07:20,800 --> 00:07:24,200 Speaker 1: tool making for a very long time, UM has been 133 00:07:24,240 --> 00:07:28,920 Speaker 1: done following right handed techniques. Still is in many cases, sure, um. 134 00:07:29,040 --> 00:07:32,080 Speaker 1: And so when a lefty was trying to make tools 135 00:07:32,160 --> 00:07:35,240 Speaker 1: or do whatever using right handed tools, they would have 136 00:07:35,280 --> 00:07:39,040 Speaker 1: been clumsy with them. And therefore the idea that left 137 00:07:39,080 --> 00:07:42,600 Speaker 1: handed people were clumsy or weak or whatever could have 138 00:07:42,680 --> 00:07:46,840 Speaker 1: developed and carried on. Yeah, like, uh, colonial day, dad 139 00:07:46,960 --> 00:07:49,840 Speaker 1: is teaching his two sons. Let's go with the son 140 00:07:49,880 --> 00:07:52,880 Speaker 1: and a daughter. Even, let's how to use a saw. 141 00:07:53,480 --> 00:07:55,320 Speaker 1: And you know, the son's left handed and he keeps 142 00:07:55,440 --> 00:07:58,560 Speaker 1: he can't saw well, so the dad's just like he 143 00:07:58,600 --> 00:08:01,160 Speaker 1: favors the daughter because she's you know, she's better with 144 00:08:01,200 --> 00:08:03,320 Speaker 1: the saw. It's just it's easy to see how that 145 00:08:03,320 --> 00:08:05,920 Speaker 1: could happen. Like he's mad at Roger but pleased with 146 00:08:05,960 --> 00:08:10,000 Speaker 1: Prudence because prudence. She's always sawing things. Well, that's a 147 00:08:10,040 --> 00:08:14,640 Speaker 1: colonium name, right, Yeah, sure, well I feel like it is. Okay, 148 00:08:14,640 --> 00:08:19,360 Speaker 1: well what else is there? Who? Goody? Uh, goody, Alice. Okay, 149 00:08:20,400 --> 00:08:25,600 Speaker 1: it's timeless. Um, but there's still that if you're lefty today, 150 00:08:25,640 --> 00:08:27,800 Speaker 1: you might be frustrated with things like scissors and can 151 00:08:27,840 --> 00:08:31,520 Speaker 1: openers and spiral notebooks and things that sort of U 152 00:08:32,160 --> 00:08:34,920 Speaker 1: favor the right handed. Yeah, we're sitting next to a 153 00:08:35,080 --> 00:08:38,720 Speaker 1: right handed person at dinner. The elbow thing, it's the worst. 154 00:08:38,960 --> 00:08:42,000 Speaker 1: It's because there's so few left handed people. If you're 155 00:08:42,040 --> 00:08:44,760 Speaker 1: planning a dinner party, first of all, it's just common 156 00:08:44,800 --> 00:08:47,520 Speaker 1: courtesy to know the handedness of all of your guests, 157 00:08:48,120 --> 00:08:50,760 Speaker 1: and then to put the appropriately right to put the 158 00:08:50,840 --> 00:08:52,880 Speaker 1: left handed person at the end of the table so 159 00:08:52,920 --> 00:08:55,959 Speaker 1: that their left hand is their left elbow is off 160 00:08:56,000 --> 00:08:57,840 Speaker 1: the table and they don't have to worry about bumping 161 00:08:57,840 --> 00:09:00,400 Speaker 1: into other people. Yeah, my mom is left ended, my 162 00:09:00,480 --> 00:09:05,600 Speaker 1: father is right handed, and you came out right handed. Yeah, crazy, 163 00:09:06,679 --> 00:09:11,920 Speaker 1: I sure did so. Um. Despite everybody knowing that there's 164 00:09:11,920 --> 00:09:15,120 Speaker 1: a right handedness and a left handedness, it turns out, 165 00:09:15,160 --> 00:09:20,439 Speaker 1: after investigating this kind of thing, science is really baffled 166 00:09:20,440 --> 00:09:22,720 Speaker 1: as to what exactly is going on, why we would 167 00:09:22,760 --> 00:09:26,839 Speaker 1: have handedness, yeah at all, where it comes from. Why 168 00:09:26,880 --> 00:09:30,680 Speaker 1: the proportions seem to be steady. There's a lot of 169 00:09:30,760 --> 00:09:35,280 Speaker 1: questions that you know, come up when you look into handedness. 170 00:09:35,320 --> 00:09:37,400 Speaker 1: Whereas you know the average person who just kind of 171 00:09:37,400 --> 00:09:41,400 Speaker 1: take it for granted, but no, not the average scientists. No, no, no. 172 00:09:41,880 --> 00:09:45,480 Speaker 1: There are a lot of interesting theories though. UM. One 173 00:09:45,600 --> 00:09:48,800 Speaker 1: is is that, uh, as we all know, we have 174 00:09:48,840 --> 00:09:51,079 Speaker 1: a left hemisphere in the right hemisphere of our brain, 175 00:09:51,760 --> 00:09:54,360 Speaker 1: and we are one of the only mammals that are 176 00:09:54,480 --> 00:09:59,440 Speaker 1: very much UM have a it's called brain lateralization when primarily, 177 00:09:59,480 --> 00:10:01,400 Speaker 1: and this isn't a cross the board, but primarily one 178 00:10:01,440 --> 00:10:04,120 Speaker 1: hemisphere controls certain things and the other controls other things. 179 00:10:04,679 --> 00:10:07,240 Speaker 1: And that is primarily controlling the opposite side of the 180 00:10:07,280 --> 00:10:14,640 Speaker 1: body as the hemisphere. UM. But language and um controlling 181 00:10:14,679 --> 00:10:16,920 Speaker 1: your you know, fine motor skills like things you do 182 00:10:16,960 --> 00:10:20,080 Speaker 1: with your hands and your fingers. I have often been 183 00:10:20,320 --> 00:10:25,240 Speaker 1: linked because uh, they are generally on linked together and 184 00:10:25,360 --> 00:10:28,400 Speaker 1: on one hemisphere of the brain right for for the 185 00:10:28,400 --> 00:10:30,400 Speaker 1: most part, people who are right handed. They make up 186 00:10:30,440 --> 00:10:34,200 Speaker 1: the vast majority of human beings by the way. Yeah, 187 00:10:34,200 --> 00:10:36,520 Speaker 1: I saw as low as seventy, but nothing lower than that, 188 00:10:36,720 --> 00:10:41,520 Speaker 1: you know, eighty didn't Yeah, you're right, sorry, exactly. Um, 189 00:10:43,080 --> 00:10:46,679 Speaker 1: those people have their language center in the left hemisphere, 190 00:10:46,840 --> 00:10:50,199 Speaker 1: and I guess also their motor cortex in the left hemisphere, 191 00:10:50,880 --> 00:10:56,280 Speaker 1: and the know the left and the U. There's a 192 00:10:56,280 --> 00:10:58,200 Speaker 1: lot of questions about why this would be when the 193 00:10:58,240 --> 00:11:01,960 Speaker 1: brain supposedly is a is always looking for efficiencies as 194 00:11:02,000 --> 00:11:05,199 Speaker 1: much as possible. So they're saying, okay, well, these are 195 00:11:05,240 --> 00:11:11,319 Speaker 1: two very human activities speech language and using your fingers 196 00:11:11,360 --> 00:11:15,240 Speaker 1: to do stuff, right, So, um, they're also some of 197 00:11:15,240 --> 00:11:18,520 Speaker 1: the more complex activities that humans engage in. So it 198 00:11:18,600 --> 00:11:20,360 Speaker 1: makes sense that you just leave it up to one 199 00:11:20,400 --> 00:11:23,679 Speaker 1: side of the brain so that these things can um 200 00:11:24,480 --> 00:11:27,360 Speaker 1: not have to cross over the corpus colossum. Yeah, it's 201 00:11:27,360 --> 00:11:29,719 Speaker 1: it's just a cluster together. It makes sense. It does 202 00:11:29,800 --> 00:11:33,120 Speaker 1: make sense, but it's also a pretty thin explanation. If 203 00:11:33,160 --> 00:11:36,040 Speaker 1: you you could also say the other the exact opposite, 204 00:11:36,080 --> 00:11:38,840 Speaker 1: that it would make more sense that our motor skills 205 00:11:38,960 --> 00:11:41,040 Speaker 1: and our language skills would be in opposite sides of 206 00:11:41,040 --> 00:11:43,800 Speaker 1: the brain to give each other a break, rather than 207 00:11:43,840 --> 00:11:47,120 Speaker 1: just weighting it down on the same side. The point is, though, 208 00:11:47,160 --> 00:11:50,480 Speaker 1: as if you crack open a human brain and you 209 00:11:50,600 --> 00:11:54,240 Speaker 1: look for the motor cortex and the language region, the 210 00:11:54,320 --> 00:11:58,480 Speaker 1: language center, you're gonna find them most likely, statistically speaking, 211 00:11:58,760 --> 00:12:03,280 Speaker 1: on the left hemisphere. Hence more right handedness. Right because 212 00:12:03,280 --> 00:12:06,520 Speaker 1: of what you said that um that brain literalization where 213 00:12:06,720 --> 00:12:09,760 Speaker 1: stuff that's carried out in the left hemisphere is going 214 00:12:09,800 --> 00:12:13,360 Speaker 1: to manifest itself in the right. So if you're shaking 215 00:12:13,400 --> 00:12:16,400 Speaker 1: somebody's hand using your right hand, the left hemisphere is 216 00:12:16,400 --> 00:12:20,120 Speaker 1: is blowing up. That's right. If you're taking in um 217 00:12:20,400 --> 00:12:22,839 Speaker 1: visual information with just your left eye because you got 218 00:12:22,840 --> 00:12:24,760 Speaker 1: your right eye closed or it was poked out by 219 00:12:24,760 --> 00:12:27,959 Speaker 1: a seagull or whatever, then your right hemisphere is going 220 00:12:28,000 --> 00:12:32,560 Speaker 1: to be active, right, that's right. Interestingly, though, if the 221 00:12:32,600 --> 00:12:36,120 Speaker 1: opposite isn't true, if you have your language center in 222 00:12:36,320 --> 00:12:41,120 Speaker 1: your right hemisphere, it doesn't always mean that you're going 223 00:12:41,120 --> 00:12:43,560 Speaker 1: to be left handed. It means you're more likely to. 224 00:12:44,200 --> 00:12:46,400 Speaker 1: But um, I like the way this article looked at it. 225 00:12:46,400 --> 00:12:49,080 Speaker 1: It's it's an evolutionary rule of thumb. It's not. I 226 00:12:49,080 --> 00:12:53,160 Speaker 1: think they said between sixty one and se of lefties 227 00:12:53,200 --> 00:12:58,600 Speaker 1: have the language centers on the left. Um over of 228 00:12:58,880 --> 00:13:03,040 Speaker 1: right handed people, which raises a really great question, are 229 00:13:03,280 --> 00:13:06,719 Speaker 1: is there such a thing as right eas and lefties 230 00:13:07,200 --> 00:13:09,120 Speaker 1: or is there such a thing as right ees and 231 00:13:09,240 --> 00:13:12,520 Speaker 1: non right ees? Because if there, if the if a 232 00:13:12,640 --> 00:13:15,199 Speaker 1: righty and a lefty are equally exactly the same thing, 233 00:13:15,320 --> 00:13:19,880 Speaker 1: if handedness is completely um binary like that, then if 234 00:13:19,920 --> 00:13:22,800 Speaker 1: you're a lefty, your language center should be on the 235 00:13:22,920 --> 00:13:24,880 Speaker 1: right hand side, and that, like you said, that's just 236 00:13:25,000 --> 00:13:29,040 Speaker 1: not the case in most lefties even Yeah, that's true, 237 00:13:29,480 --> 00:13:32,360 Speaker 1: and uh I O nine article also points out that 238 00:13:32,480 --> 00:13:36,360 Speaker 1: it's they don't know why necessarily, but this is just 239 00:13:36,520 --> 00:13:38,959 Speaker 1: how we evolved. It could have just been the opposite 240 00:13:39,200 --> 00:13:41,520 Speaker 1: right and then we'd have more lefties, right, Yeah, well 241 00:13:41,520 --> 00:13:44,920 Speaker 1: that's the idea. But I think, um, there are a 242 00:13:44,920 --> 00:13:49,280 Speaker 1: couple of the explanations, possibly of genetic mutations along the 243 00:13:49,320 --> 00:13:53,160 Speaker 1: way too, In particular, UH one about two hundred thousand 244 00:13:53,240 --> 00:13:58,079 Speaker 1: years ago that basically mutated us to the fact that 245 00:13:58,679 --> 00:14:00,760 Speaker 1: we are going to be more right handed in the 246 00:14:00,840 --> 00:14:02,120 Speaker 1: in the language center is going to be on the 247 00:14:02,200 --> 00:14:06,199 Speaker 1: left hand side. And then more recently, um, there's a 248 00:14:06,280 --> 00:14:10,560 Speaker 1: theory that there was a second mutation uh between twenty 249 00:14:10,600 --> 00:14:14,400 Speaker 1: thousand and a hundred thousand years ago where that basically 250 00:14:14,440 --> 00:14:17,280 Speaker 1: balanced things out, or it canceled that out, which means 251 00:14:17,320 --> 00:14:20,720 Speaker 1: the possibility of left handedness became a thing, or else 252 00:14:20,760 --> 00:14:24,240 Speaker 1: we would have all been right handed. That makes sense too, 253 00:14:24,480 --> 00:14:28,400 Speaker 1: It does make sense and that the humans possibly evolved 254 00:14:29,400 --> 00:14:32,240 Speaker 1: to use their hands more, and by using their hands more, 255 00:14:32,600 --> 00:14:36,240 Speaker 1: our brains were forced to become specialized and basically forced 256 00:14:36,280 --> 00:14:38,960 Speaker 1: to choose. So then some sort of gene was set 257 00:14:39,040 --> 00:14:43,160 Speaker 1: up that made the developing human brain most likely to 258 00:14:43,200 --> 00:14:47,160 Speaker 1: be a right handed person. Right, And then that second 259 00:14:47,320 --> 00:14:50,080 Speaker 1: gene came along and canceled that out in some parts 260 00:14:50,120 --> 00:14:53,400 Speaker 1: of the population. I think it's the D gene and 261 00:14:53,400 --> 00:14:58,440 Speaker 1: the C gene. Um there are two alleles, which is 262 00:14:58,480 --> 00:15:02,160 Speaker 1: the manifestations of a gene at the same location, and 263 00:15:02,720 --> 00:15:06,440 Speaker 1: the D gene is more frequent in the population, so 264 00:15:06,520 --> 00:15:09,560 Speaker 1: it's more uh promotes the right handed preference. The C 265 00:15:09,720 --> 00:15:12,760 Speaker 1: gene is less likely within the gene pool UH. And 266 00:15:12,880 --> 00:15:16,040 Speaker 1: so there you have like a fifty fifty chance of 267 00:15:16,120 --> 00:15:19,920 Speaker 1: being left handed if you have that C gene. Okay, 268 00:15:20,160 --> 00:15:23,680 Speaker 1: I got you, Yeah, But you don't have a being 269 00:15:24,440 --> 00:15:26,960 Speaker 1: a left handed person in general. You have about it 270 00:15:27,200 --> 00:15:30,760 Speaker 1: only if you yeah, because the D gene is more prominent, 271 00:15:31,080 --> 00:15:34,000 Speaker 1: and that means almost certainly you're going to be right handed. Okay, 272 00:15:34,040 --> 00:15:36,160 Speaker 1: So the caveat we should add to all of this 273 00:15:36,240 --> 00:15:40,360 Speaker 1: is that, um, this is all just strictly conjecture. UM. 274 00:15:40,440 --> 00:15:42,320 Speaker 1: And we'll get to a little more of this conjecture 275 00:15:42,520 --> 00:16:02,360 Speaker 1: right after this. So, Chuck, we're saying that it's possible 276 00:16:02,360 --> 00:16:06,640 Speaker 1: that genetic mutations far back in human history account for this, 277 00:16:07,360 --> 00:16:10,320 Speaker 1: and UM, there's a lot of evidence that there have 278 00:16:10,920 --> 00:16:13,800 Speaker 1: humans have been mostly right handed for about the last 279 00:16:13,840 --> 00:16:17,480 Speaker 1: two hundred thousand years. Fossil evidence suggests this. Looking at 280 00:16:17,800 --> 00:16:23,160 Speaker 1: um Neanderthal skeletons, early human skeletons, UM, you can see 281 00:16:23,200 --> 00:16:26,320 Speaker 1: evidence on the skeletons of right handedness, and they think 282 00:16:26,360 --> 00:16:30,960 Speaker 1: that it's so obvious and obviously prominent because these people 283 00:16:31,000 --> 00:16:34,680 Speaker 1: were using things like spears, So if they did have 284 00:16:34,760 --> 00:16:39,320 Speaker 1: a hand preference, then a spear would definitely develop that 285 00:16:39,680 --> 00:16:42,920 Speaker 1: arm connected to that hand, and it would stay in 286 00:16:42,960 --> 00:16:46,800 Speaker 1: the fossil record through the skeletons. Right. They also have 287 00:16:46,880 --> 00:16:50,320 Speaker 1: looked at other fossils as far back as one point 288 00:16:50,400 --> 00:16:53,920 Speaker 1: six million years. There's a skeleton called, I want to say, 289 00:16:53,960 --> 00:16:57,040 Speaker 1: the Kokomo Boy. Even though it's not, but I love 290 00:16:57,080 --> 00:17:01,480 Speaker 1: that song. It's the Nario quote, my boy, you love Cocomo. 291 00:17:01,760 --> 00:17:05,760 Speaker 1: Sure uh And he is at one point six million 292 00:17:05,840 --> 00:17:10,520 Speaker 1: year old Homo air Gaster. And um, they he was 293 00:17:10,600 --> 00:17:13,639 Speaker 1: clearly right handed as well. Other fossils have turned up 294 00:17:13,920 --> 00:17:17,560 Speaker 1: evidence of right handedness them the teeth. Striations on the 295 00:17:17,560 --> 00:17:21,360 Speaker 1: teeth suggest eating with their right hand. So what we 296 00:17:21,440 --> 00:17:23,560 Speaker 1: what we can stay with a pretty decent amount of 297 00:17:23,560 --> 00:17:26,399 Speaker 1: confidences that at least for the last two hundred thousand years, 298 00:17:26,840 --> 00:17:31,240 Speaker 1: humanity has been a majority right handers, and there's been 299 00:17:31,280 --> 00:17:36,879 Speaker 1: maybe about this constant ten proportion of left handed people, 300 00:17:37,240 --> 00:17:40,320 Speaker 1: which makes the mystery even more crazy to me. Yeah, 301 00:17:40,359 --> 00:17:44,600 Speaker 1: but it also makes sense that um an early tool 302 00:17:44,640 --> 00:17:48,280 Speaker 1: building and teaching how to use tools, UM, I mean 303 00:17:48,320 --> 00:17:50,399 Speaker 1: it holds true today. They've done studies that you know, 304 00:17:50,880 --> 00:17:53,040 Speaker 1: you teach your son or daughter to tie a tie, 305 00:17:53,320 --> 00:17:55,840 Speaker 1: and it's it's going to be more difficult if they're 306 00:17:55,920 --> 00:17:57,640 Speaker 1: left handed and you're right handed for them to try 307 00:17:57,680 --> 00:18:00,520 Speaker 1: and do it with their left hand, so or they'll 308 00:18:00,520 --> 00:18:03,840 Speaker 1: pick it up easier if they go against their instinct 309 00:18:03,880 --> 00:18:06,919 Speaker 1: and learn it how you've talked with. The studies have 310 00:18:06,960 --> 00:18:09,919 Speaker 1: shown that so you learn faster from watching somebody and 311 00:18:09,920 --> 00:18:13,080 Speaker 1: then using the same hands that they do. Yeah, and 312 00:18:13,200 --> 00:18:15,160 Speaker 1: that makes sense. Back in the you know, with Took 313 00:18:15,160 --> 00:18:18,560 Speaker 1: took in showing his pal how to use the bone 314 00:18:19,040 --> 00:18:23,439 Speaker 1: to smash skull. You know, it's if he picks off 315 00:18:23,520 --> 00:18:25,800 Speaker 1: his buddy picks up with his left hand, Took Took's 316 00:18:25,840 --> 00:18:29,560 Speaker 1: gonna shake his head. No, no, yeah, use right hand 317 00:18:29,800 --> 00:18:31,760 Speaker 1: or they're just gonna you know, they want. Everyone wants 318 00:18:31,760 --> 00:18:34,040 Speaker 1: to fit in, even back at in the old days. Well, 319 00:18:34,080 --> 00:18:38,920 Speaker 1: that's actually a suggestion of why left handedness is possibly 320 00:18:38,960 --> 00:18:42,440 Speaker 1: not a little more prevalent among a certain age group 321 00:18:42,480 --> 00:18:46,840 Speaker 1: today because it was equated with being weird or off 322 00:18:47,080 --> 00:18:53,080 Speaker 1: or crazy or whatever. Um. And parents and teachers would 323 00:18:53,359 --> 00:18:56,360 Speaker 1: force children to learn how to write with their right hand, 324 00:18:57,000 --> 00:19:00,840 Speaker 1: effectively wiping out a lot of the left hand to population. 325 00:19:01,560 --> 00:19:05,160 Speaker 1: Yeah and um, just jumping back a minute, I wanted 326 00:19:05,200 --> 00:19:09,720 Speaker 1: to mention something important that the whole correlation versus causation thing, 327 00:19:10,560 --> 00:19:14,320 Speaker 1: um with the whole language center link. Uh, it's not 328 00:19:14,359 --> 00:19:17,840 Speaker 1: necessarily that that's a correlation. They appear to be strongly linked, 329 00:19:18,240 --> 00:19:22,440 Speaker 1: but no one is saying that because the language hemisphere 330 00:19:22,480 --> 00:19:24,040 Speaker 1: is on the left side of your brain that's causing 331 00:19:24,080 --> 00:19:26,879 Speaker 1: you to be right handed right there there. And again, 332 00:19:26,920 --> 00:19:29,399 Speaker 1: the reason that they are linked in a lot of 333 00:19:29,440 --> 00:19:35,000 Speaker 1: scientists minds is that speech and fine motor skills are 334 00:19:35,160 --> 00:19:40,040 Speaker 1: basically uniquely human, almost uniquely human. And it's just a 335 00:19:40,080 --> 00:19:42,879 Speaker 1: little it's kind of like a red flag or a 336 00:19:42,880 --> 00:19:46,879 Speaker 1: signal that they're both usually in the same hemisphere, and 337 00:19:46,920 --> 00:19:50,159 Speaker 1: they do seem to be connected. And one hypothesis for 338 00:19:50,240 --> 00:19:53,720 Speaker 1: why they're connected I thought was pretty smart. Um the 339 00:19:53,760 --> 00:19:59,680 Speaker 1: idea that language spoken language emerged out of gestures hand movements, 340 00:20:00,000 --> 00:20:03,400 Speaker 1: which we require fine motor skills, right, but I don't 341 00:20:03,440 --> 00:20:05,520 Speaker 1: have trying to do the two legit to quit things. 342 00:20:06,000 --> 00:20:09,119 Speaker 1: But the idea that language emerged out of that would 343 00:20:09,480 --> 00:20:12,439 Speaker 1: suggest some sort of connection between the two, Like maybe 344 00:20:12,480 --> 00:20:15,119 Speaker 1: the fine motor skill section is the more ancient of 345 00:20:15,119 --> 00:20:18,800 Speaker 1: the two, and then language evolved out of that. But 346 00:20:18,880 --> 00:20:21,040 Speaker 1: we also still need our fine motor skills to like 347 00:20:21,280 --> 00:20:23,240 Speaker 1: eat with a fork and knife and everything, so it's 348 00:20:23,280 --> 00:20:27,480 Speaker 1: stuck around. It didn't become obsolete just because we started speaking. Yeah, 349 00:20:27,680 --> 00:20:30,399 Speaker 1: I like that theory. Um. We we did mention that 350 00:20:30,440 --> 00:20:35,120 Speaker 1: this is a largely uniquely human trait um, But they 351 00:20:35,160 --> 00:20:38,800 Speaker 1: have followed. Uh, they've basically been looking at our closest 352 00:20:38,840 --> 00:20:41,359 Speaker 1: ancestors to try and figure a lot of this stuff out. 353 00:20:41,400 --> 00:20:43,400 Speaker 1: Although it did see some studies that said that, like, 354 00:20:44,920 --> 00:20:47,000 Speaker 1: cats are left handed because they'll go to swat things 355 00:20:47,040 --> 00:20:49,920 Speaker 1: with their left hand. But um, I'm not so sure 356 00:20:49,920 --> 00:20:53,440 Speaker 1: about that. Yeah, there's not only is it difficult apparently 357 00:20:53,440 --> 00:20:58,720 Speaker 1: to um test or do you attribute handedness to an animal, 358 00:20:59,200 --> 00:21:02,840 Speaker 1: it's also difficult to attribute handedness to a person because 359 00:21:02,880 --> 00:21:05,320 Speaker 1: the idea of whether or not you're left handed or 360 00:21:05,440 --> 00:21:09,600 Speaker 1: right handed, Um, it's still questionable. Like if you write 361 00:21:09,600 --> 00:21:13,440 Speaker 1: with your right hand, but you actually can write better 362 00:21:13,480 --> 00:21:16,280 Speaker 1: with your left hand or something like that. Right which 363 00:21:16,520 --> 00:21:19,080 Speaker 1: what are you? Yeah, is the one you're comfortable with 364 00:21:19,080 --> 00:21:21,760 Speaker 1: the one that you're actually better with? Yeah, that's a 365 00:21:21,760 --> 00:21:24,960 Speaker 1: good point. Um. But they have been looking at our 366 00:21:25,040 --> 00:21:29,239 Speaker 1: our primate ancestors since about the nineteen twenties, and they 367 00:21:29,240 --> 00:21:34,080 Speaker 1: have found patterns. Um. Apparently lemurs and are more left handed, 368 00:21:34,440 --> 00:21:39,440 Speaker 1: and other prosim uh persimians um, Macaques and old World 369 00:21:39,520 --> 00:21:43,040 Speaker 1: monkeys for the most part are evenly split, and gorillas 370 00:21:43,080 --> 00:21:47,639 Speaker 1: and chimpanzees are about thirty five lefty. Um, But this 371 00:21:47,720 --> 00:21:51,240 Speaker 1: is interesting. The more, as they say here, the more primitive, 372 00:21:51,240 --> 00:21:55,159 Speaker 1: the primate, the more likely it is to be a lefty, 373 00:21:55,240 --> 00:22:02,000 Speaker 1: which goes in the opposite of the gene mutation. It's 374 00:22:02,040 --> 00:22:05,960 Speaker 1: the exact opposite. It implies that we were originally left 375 00:22:06,000 --> 00:22:09,720 Speaker 1: handed as primates, and then as we evolved, we became 376 00:22:09,840 --> 00:22:12,879 Speaker 1: right handed. So therefore right handed people are more evolved 377 00:22:12,880 --> 00:22:15,200 Speaker 1: than left handed people in some weird way. Yeah. So 378 00:22:15,240 --> 00:22:17,760 Speaker 1: again it's another inconsistency where and of course this is 379 00:22:17,760 --> 00:22:22,240 Speaker 1: in primates too. Um, that doesn't necessarily mean it's the 380 00:22:22,280 --> 00:22:25,960 Speaker 1: same thing with humans. No, definitely not. But I mean, 381 00:22:26,000 --> 00:22:28,000 Speaker 1: if you're looking at our ancestry and trying to figure 382 00:22:28,000 --> 00:22:30,960 Speaker 1: out where handedness came from, you have to go pretty 383 00:22:31,000 --> 00:22:35,479 Speaker 1: far back right, And I that's a pretty good example 384 00:22:35,520 --> 00:22:41,160 Speaker 1: of how this body of work or knowledge is very contradictory. Still, yeah, 385 00:22:41,240 --> 00:22:45,760 Speaker 1: it's baffling, it's pretty awesome. Hey, Chucky, you sent me 386 00:22:45,840 --> 00:22:49,200 Speaker 1: something about um ambidextrous nous. Yeah, I thought this is 387 00:22:49,280 --> 00:22:52,720 Speaker 1: kind of interesting from mental flaws like, like, it was 388 00:22:52,800 --> 00:22:55,199 Speaker 1: just kind of my understanding that anybody who said, oh, 389 00:22:55,200 --> 00:22:57,320 Speaker 1: I'm ambidextrous knew what they were talking about. But it 390 00:22:57,320 --> 00:23:00,439 Speaker 1: turns out that's really just not the case. For the 391 00:23:00,480 --> 00:23:04,800 Speaker 1: most part. It's a very rare um condition. I guess 392 00:23:04,840 --> 00:23:08,199 Speaker 1: you'd call it yeah, UM, because I don't know if 393 00:23:08,200 --> 00:23:14,080 Speaker 1: there is as a strict definition for what constitutes being ambidextrous. 394 00:23:14,160 --> 00:23:18,520 Speaker 1: Like a you know, a switch hitter in baseball doesn't 395 00:23:18,560 --> 00:23:21,720 Speaker 1: necessarily mean they're ambidextrous. It means they've taught themselves to 396 00:23:21,840 --> 00:23:25,240 Speaker 1: hit from the other side of the plate. Um. If 397 00:23:25,240 --> 00:23:28,879 Speaker 1: you notice, as a baseball fan, you're never gonna see 398 00:23:28,920 --> 00:23:33,399 Speaker 1: a player that hits uh equally as well on both sides, 399 00:23:34,119 --> 00:23:36,639 Speaker 1: Like you know, the great Chipper Jones here from Atlanta, 400 00:23:37,080 --> 00:23:38,960 Speaker 1: he favored one side of the plate. Although he was 401 00:23:39,000 --> 00:23:41,360 Speaker 1: a switch hitter, he was a much better hitter. I 402 00:23:41,359 --> 00:23:44,360 Speaker 1: think it was as a lefty and not as a righty. 403 00:23:44,400 --> 00:23:47,480 Speaker 1: So that's not a dextrous now, someone who's taught themselves 404 00:23:47,520 --> 00:23:51,040 Speaker 1: because it's a valuable skill in sports to be somewhat 405 00:23:51,040 --> 00:23:54,000 Speaker 1: embeddextrous or in a lot of sports. UM. But as far, 406 00:23:54,080 --> 00:23:56,479 Speaker 1: I think writing is one of the things that they 407 00:23:56,480 --> 00:23:59,560 Speaker 1: can look at um as a clear indicator of which 408 00:23:59,560 --> 00:24:03,560 Speaker 1: hand uh you're you're best at, And they say about 409 00:24:03,560 --> 00:24:06,240 Speaker 1: only about one percent can write equally as well with 410 00:24:06,320 --> 00:24:11,080 Speaker 1: either hand. So that's like super low. Um. Apparently too 411 00:24:12,040 --> 00:24:14,920 Speaker 1: So this handedness and this um lateralization of the brain 412 00:24:15,000 --> 00:24:17,360 Speaker 1: and division of labor and all that has a lot 413 00:24:17,440 --> 00:24:19,520 Speaker 1: to do with how your brain is connected. And apparently 414 00:24:19,560 --> 00:24:23,280 Speaker 1: handedness is a part of that too. So like, for example, UM, 415 00:24:23,320 --> 00:24:27,560 Speaker 1: people who are ambidextrous UM are more likely to suffer 416 00:24:27,760 --> 00:24:32,040 Speaker 1: from schizophrenia, to have schizophrenia. And there it's not just 417 00:24:32,280 --> 00:24:37,600 Speaker 1: UM ambidextrous people. Apparently lefties UM show a greater propensity 418 00:24:37,640 --> 00:24:42,720 Speaker 1: towards schizophrenia. Something like people with schizophrenia are left handed, 419 00:24:43,080 --> 00:24:47,159 Speaker 1: which is a very high proportion considering the general populations, 420 00:24:47,200 --> 00:24:50,879 Speaker 1: about ten percent, and UM more than that, dyslexia and 421 00:24:50,920 --> 00:24:56,440 Speaker 1: stuttering as well, right, which suggests that left handedness has 422 00:24:56,720 --> 00:24:59,840 Speaker 1: an effect on how your brain is wired. It's not 423 00:25:00,000 --> 00:25:03,080 Speaker 1: it's too simple, Oh my my hand is I use 424 00:25:03,200 --> 00:25:06,639 Speaker 1: my left hand. My my brain is otherwise the exact 425 00:25:06,720 --> 00:25:09,920 Speaker 1: same as a right handed person. The brain does appear 426 00:25:10,200 --> 00:25:13,680 Speaker 1: to be different in some ways, especially in the ways 427 00:25:13,720 --> 00:25:16,639 Speaker 1: that it's connected. Yeah, the um. We we talked about 428 00:25:16,640 --> 00:25:20,639 Speaker 1: synesthesia before, one of our favorite Uh what do you 429 00:25:20,640 --> 00:25:24,480 Speaker 1: call it? Not a condition? Is it? Yeah? Is it? Sure? 430 00:25:25,240 --> 00:25:27,840 Speaker 1: I always just think of condition is something that's uh, 431 00:25:28,200 --> 00:25:34,040 Speaker 1: you know, derogatory yeah, like a malady or something. I mean, 432 00:25:34,400 --> 00:25:36,760 Speaker 1: I think that falls under that one is one, but 433 00:25:37,040 --> 00:25:39,560 Speaker 1: the other one isn't necessarily that one. So like a 434 00:25:39,680 --> 00:25:43,960 Speaker 1: malady is a condition, but excerption is necessarily malady. Anyway, 435 00:25:44,119 --> 00:25:47,560 Speaker 1: that's my long windway of saying. Synist eats are awesome. Uh. 436 00:25:47,600 --> 00:25:50,960 Speaker 1: And the rate of and uh ambidextran synistats is much 437 00:25:51,040 --> 00:25:54,880 Speaker 1: higher uh and left handedness than in the general population. Right. 438 00:25:54,920 --> 00:25:57,680 Speaker 1: So we have some clues here, like, UM, it's it's 439 00:25:59,440 --> 00:26:01,919 Speaker 1: handedness has to do with how your brain is wired, 440 00:26:01,920 --> 00:26:04,280 Speaker 1: and if your brain is wired in such a way 441 00:26:04,320 --> 00:26:07,480 Speaker 1: that you are left handed, your brain is wired differently 442 00:26:07,520 --> 00:26:11,280 Speaker 1: from a person with a right handed brain. Right, And 443 00:26:11,359 --> 00:26:13,240 Speaker 1: a lot of studies have backed that up and have 444 00:26:13,320 --> 00:26:17,080 Speaker 1: come up with things like it's entirely possible that if 445 00:26:17,119 --> 00:26:19,800 Speaker 1: you're a left handed person you've got some advantages in life. 446 00:26:20,400 --> 00:26:40,720 Speaker 1: We'll talk about those right after this. So, Chuck, one 447 00:26:40,760 --> 00:26:45,760 Speaker 1: of the things that UM left handedness possibly bestows confers 448 00:26:45,800 --> 00:26:49,320 Speaker 1: upon you as a benefit is the idea of thinking quicker, 449 00:26:49,720 --> 00:26:53,679 Speaker 1: to be able to process information more quickly. Yeah. Uh, 450 00:26:53,800 --> 00:26:57,720 Speaker 1: they have done some studies on this. UM did did 451 00:26:57,720 --> 00:27:00,000 Speaker 1: a couple of studies. One of which they sat down 452 00:27:00,040 --> 00:27:03,160 Speaker 1: on a hundred people, eighty right handers, twenty left handers, 453 00:27:03,240 --> 00:27:06,080 Speaker 1: and basically to show them a computer screen with a 454 00:27:06,160 --> 00:27:08,280 Speaker 1: single dot either on the left or the right side, 455 00:27:08,760 --> 00:27:10,520 Speaker 1: and you had to press a button. It's just a 456 00:27:10,560 --> 00:27:13,560 Speaker 1: speed test basically like which side is it on? Left 457 00:27:13,640 --> 00:27:15,720 Speaker 1: or right? Right? So something shows up on the left side. 458 00:27:15,760 --> 00:27:17,200 Speaker 1: I'm sure you have a clicker in your left hand 459 00:27:17,200 --> 00:27:18,840 Speaker 1: and clicker in your right hand. You click the left 460 00:27:18,880 --> 00:27:22,520 Speaker 1: hand clicker. But this is all happening very fast, that's right, UM, 461 00:27:22,600 --> 00:27:26,359 Speaker 1: and left handed subjects were overall faster. Uh. And the 462 00:27:26,400 --> 00:27:28,480 Speaker 1: other tests they had to match up multiple letters that 463 00:27:28,520 --> 00:27:31,640 Speaker 1: appeared in some cases on either side of the line 464 00:27:31,720 --> 00:27:34,639 Speaker 1: and in other cases on just one side. And again 465 00:27:34,880 --> 00:27:38,560 Speaker 1: left handed, Uh, we're faster, but just at matching letters 466 00:27:38,640 --> 00:27:41,280 Speaker 1: that were on both sides of the line, which I 467 00:27:41,280 --> 00:27:44,240 Speaker 1: thought was interesting well, and that supports this idea that 468 00:27:44,400 --> 00:27:49,200 Speaker 1: UM the the brain. The fact that UM, some left 469 00:27:49,240 --> 00:27:54,439 Speaker 1: handed people's motor skills and language centers are on different 470 00:27:54,480 --> 00:28:00,000 Speaker 1: sides in their brains, UH could make them talk more. 471 00:27:59,800 --> 00:28:03,080 Speaker 1: The side of their hemispheres of their brains are more connected. 472 00:28:03,080 --> 00:28:06,520 Speaker 1: There's more white tissue where their corpus colossum is more efficient. 473 00:28:06,960 --> 00:28:09,840 Speaker 1: It makes sense in a way, but at the same 474 00:28:09,880 --> 00:28:12,239 Speaker 1: time you're like, wait, that doesn't make any sense. So 475 00:28:12,480 --> 00:28:15,639 Speaker 1: it's kind of this data should be taken and just 476 00:28:15,760 --> 00:28:18,400 Speaker 1: locked away in a box until we understand the whole 477 00:28:18,440 --> 00:28:21,520 Speaker 1: thing more, because it doesn't really do do a lot 478 00:28:21,560 --> 00:28:23,480 Speaker 1: at this point, we don't know enough to make it fit. 479 00:28:24,359 --> 00:28:26,960 Speaker 1: And it's actually kind of contradictory to some other stuff 480 00:28:27,000 --> 00:28:30,000 Speaker 1: too as far as handedness goes. Yeah, but they do 481 00:28:30,119 --> 00:28:31,800 Speaker 1: say that if you're left handed, you may be like 482 00:28:31,840 --> 00:28:36,760 Speaker 1: a better gamer or or a pilot because you're able 483 00:28:36,800 --> 00:28:41,400 Speaker 1: to just process this quick information super fast, like rapid 484 00:28:41,400 --> 00:28:44,280 Speaker 1: fire stuff coming at you. It also suggested to that 485 00:28:44,480 --> 00:28:48,120 Speaker 1: language can be processed in both hemispheres among left handed people, 486 00:28:48,680 --> 00:28:52,200 Speaker 1: which again would require a lot more connections between the 487 00:28:52,240 --> 00:28:58,800 Speaker 1: two hemispheres, faster communication between the two, and hence quicker thinking. Yeah, 488 00:28:58,800 --> 00:29:00,760 Speaker 1: and that you in the long run, as you age 489 00:29:00,840 --> 00:29:03,000 Speaker 1: and your brain deteriorates, you may be in better shape 490 00:29:03,000 --> 00:29:07,160 Speaker 1: as a lefty because your other hemisphere may be able 491 00:29:07,160 --> 00:29:10,320 Speaker 1: to pick up that slack more easily, whereas if you're 492 00:29:10,320 --> 00:29:14,280 Speaker 1: just a dumb right hander, you're just you know, screwed. 493 00:29:14,760 --> 00:29:17,520 Speaker 1: You're in and of course this has approven. This is 494 00:29:17,560 --> 00:29:22,880 Speaker 1: just there postulating here, but I mean adds to this mystery. Yeah, 495 00:29:23,280 --> 00:29:25,600 Speaker 1: you definitely haven't an advantage in sports in a lot 496 00:29:25,600 --> 00:29:29,040 Speaker 1: of cases though. Yes, but not in the way that 497 00:29:29,080 --> 00:29:33,680 Speaker 1: you would think. It's not necessarily because your brain is communicating. 498 00:29:33,720 --> 00:29:36,560 Speaker 1: The hemispheres are of your brain are communicating. It's more 499 00:29:36,760 --> 00:29:40,760 Speaker 1: because your opponent is statistically likelier to be expecting you 500 00:29:40,840 --> 00:29:43,560 Speaker 1: to be a right handed person, to have trained against 501 00:29:43,560 --> 00:29:47,800 Speaker 1: the right handed person exactly, to be used to playing 502 00:29:47,920 --> 00:29:50,400 Speaker 1: a right handed person. Whereas if you're a left handed person, 503 00:29:50,440 --> 00:29:53,280 Speaker 1: they're playing you now, you're gonna throw them off guard. 504 00:29:53,760 --> 00:29:55,640 Speaker 1: You're gonna catch them off guard, you're gonna be able 505 00:29:55,680 --> 00:29:57,520 Speaker 1: to get the drop on them because they're not used 506 00:29:57,520 --> 00:30:01,480 Speaker 1: to you, Whereas you, being a lefty, you're still statistically 507 00:30:01,520 --> 00:30:04,680 Speaker 1: likelier to have played right handed people, so you know 508 00:30:04,720 --> 00:30:07,400 Speaker 1: how to handle them. They don't know how to handle you. 509 00:30:07,000 --> 00:30:11,160 Speaker 1: You're the wild card, baby, You win your Rocky. Yeah, 510 00:30:11,240 --> 00:30:14,680 Speaker 1: Rocky was left handed. Apparently, Um, and there's a bunch 511 00:30:14,680 --> 00:30:18,560 Speaker 1: of sports figures in real life that we're left handed, 512 00:30:18,800 --> 00:30:22,080 Speaker 1: and apparently it's one of those things where they're disproportionately 513 00:30:22,120 --> 00:30:26,160 Speaker 1: represented as far as successful athletes go compared to the 514 00:30:26,360 --> 00:30:29,320 Speaker 1: to the population at large. Yeah, and I think, um, 515 00:30:29,360 --> 00:30:31,520 Speaker 1: a lot of times you'll hear about like m M 516 00:30:31,560 --> 00:30:34,800 Speaker 1: A or boxing. Um. Tennis is another big one because 517 00:30:34,840 --> 00:30:37,000 Speaker 1: if you're used to playing righties most of your life, 518 00:30:37,360 --> 00:30:40,680 Speaker 1: that left handed server comes up there and it's it's different, 519 00:30:40,880 --> 00:30:43,760 Speaker 1: it's weird, right, and the difference is so pronounced that like, 520 00:30:43,800 --> 00:30:46,120 Speaker 1: if you are a pro tennis player or something like that, 521 00:30:46,240 --> 00:30:50,200 Speaker 1: or pro boxer, you're gonna train against the lefty before 522 00:30:50,200 --> 00:30:53,280 Speaker 1: a match against the lefty. Yeah, you know you're gonna 523 00:30:53,520 --> 00:30:55,760 Speaker 1: do what you can to prepare yourself. Yeah. And I 524 00:30:55,800 --> 00:30:58,280 Speaker 1: think Robert Lamb wrote this on how staff works are 525 00:30:58,360 --> 00:31:02,680 Speaker 1: left handers quicker, um so all better at sports and um. 526 00:31:02,760 --> 00:31:06,200 Speaker 1: He also points out that through history, uh, this probably 527 00:31:06,200 --> 00:31:10,120 Speaker 1: comes from like soldier training mainly training and fighting and 528 00:31:10,280 --> 00:31:13,880 Speaker 1: jousting and sword fighting and everything against other rights as well. 529 00:31:14,280 --> 00:31:17,440 Speaker 1: So a lefty would have a left handed warrior might 530 00:31:17,480 --> 00:31:19,640 Speaker 1: be more prone to be, you know, the great leader, 531 00:31:20,040 --> 00:31:23,880 Speaker 1: like perhaps Alexander the Great right who was supposedly left handed. 532 00:31:24,080 --> 00:31:26,440 Speaker 1: What's weird though, is if that had been the case, 533 00:31:27,120 --> 00:31:31,200 Speaker 1: if humans have been left handed and right handed, the 534 00:31:31,200 --> 00:31:33,120 Speaker 1: proportions have been roughly the same for the last two 535 00:31:33,160 --> 00:31:37,760 Speaker 1: hundred thousand years. If you're a left handed combatant, wouldn't 536 00:31:37,800 --> 00:31:41,360 Speaker 1: then the proportion of left handed people have grown over 537 00:31:41,440 --> 00:31:45,360 Speaker 1: time because of natural selection, because you you have an 538 00:31:45,360 --> 00:31:48,280 Speaker 1: advantage in battle or something like that. So therefore the 539 00:31:48,280 --> 00:31:51,080 Speaker 1: population of right handed people would drop in relation to 540 00:31:51,120 --> 00:31:54,640 Speaker 1: the population of exactly. That makes sense, and I remember, 541 00:31:54,880 --> 00:31:58,960 Speaker 1: but that hasn't happened. Yeah, I remember our podcasts on 542 00:31:59,080 --> 00:32:04,320 Speaker 1: castles like eighty years ago. Remember they built the staircases 543 00:32:05,280 --> 00:32:09,520 Speaker 1: going on the right hand side. Do you remember how mine? 544 00:32:09,920 --> 00:32:13,000 Speaker 1: You don't amendingly difficult that was for me to understand. No, 545 00:32:13,280 --> 00:32:15,200 Speaker 1: did you have our time with Oh? Yeah, we had 546 00:32:15,240 --> 00:32:17,480 Speaker 1: to re record it I think really twice because I 547 00:32:17,560 --> 00:32:20,080 Speaker 1: kept getting it wrong. Yeah. We also got in trouble 548 00:32:20,120 --> 00:32:24,200 Speaker 1: for for a cussword in that one too. That was 549 00:32:24,240 --> 00:32:28,080 Speaker 1: a dark day years ago. Um. Yeah, but the Yeah, 550 00:32:28,120 --> 00:32:30,200 Speaker 1: the the castle steps would wind up on the right 551 00:32:30,240 --> 00:32:33,480 Speaker 1: side of the wall to give the advantage to the 552 00:32:33,560 --> 00:32:36,800 Speaker 1: person higher on the stairs swinging a right handed sword, 553 00:32:37,160 --> 00:32:39,440 Speaker 1: because obviously you couldn't swing a right handed sword going 554 00:32:39,520 --> 00:32:41,600 Speaker 1: up the stairs because the wall is on your right, 555 00:32:42,240 --> 00:32:48,880 Speaker 1: But a left handed combatant advantage taken away even though 556 00:32:48,880 --> 00:32:51,480 Speaker 1: you have the higher ground, because all of a sudden 557 00:32:51,480 --> 00:32:54,479 Speaker 1: you're cutting the guy's knees off, were cutting them off 558 00:32:54,480 --> 00:32:58,480 Speaker 1: at the knees. You know that hurts. It does. But 559 00:32:59,280 --> 00:33:01,840 Speaker 1: also include with natural selection. Two is if there were 560 00:33:01,880 --> 00:33:06,400 Speaker 1: any real disadvantages to being a left handed person, or 561 00:33:06,440 --> 00:33:09,680 Speaker 1: there were advantages to being a right handed person, this 562 00:33:09,760 --> 00:33:12,800 Speaker 1: population shouldn't have remained steady over that long of a 563 00:33:12,880 --> 00:33:15,320 Speaker 1: period too. I see what you mean. You know, unless 564 00:33:15,320 --> 00:33:19,880 Speaker 1: the advantage isn't so great as to you know, cause uh, 565 00:33:20,000 --> 00:33:24,560 Speaker 1: that natural selection to occur. You know, maybe, Um, there 566 00:33:24,600 --> 00:33:28,240 Speaker 1: are more US presidents that have been left handed, more 567 00:33:28,280 --> 00:33:31,920 Speaker 1: MENSU members for whatever that's worth. Half half of the 568 00:33:31,960 --> 00:33:34,280 Speaker 1: twelve US presidents so it's World War two have been 569 00:33:34,400 --> 00:33:37,840 Speaker 1: left handed. So whereas the normal populations ten to fifteen 570 00:33:37,880 --> 00:33:40,840 Speaker 1: percent lefties US presidents of World War two has been 571 00:33:42,680 --> 00:33:49,320 Speaker 1: And apparently in campaign all three candidates H. W. Bush, Clinton, 572 00:33:49,360 --> 00:33:53,800 Speaker 1: and Pero were left handed. Yeah, that's of the population. 573 00:33:54,000 --> 00:33:58,160 Speaker 1: Peroh Man, he was fun to watch, he was Dana 574 00:33:58,240 --> 00:34:01,520 Speaker 1: Carvey was fun to watch doing per to Yeah. Uh. 575 00:34:01,560 --> 00:34:05,120 Speaker 1: And they say more musicians more or musicians are more 576 00:34:05,120 --> 00:34:08,279 Speaker 1: likely to be left handed maybe. Um, and it does 577 00:34:08,400 --> 00:34:12,320 Speaker 1: run in families, even though identical twins can have opposite 578 00:34:12,320 --> 00:34:15,920 Speaker 1: hand preferences. Oh weird and um there is. In the 579 00:34:16,000 --> 00:34:20,960 Speaker 1: nineteen eighties, it was a Harvard neurologist that said that, ah, 580 00:34:21,280 --> 00:34:25,560 Speaker 1: lefties are right eas whose brain centers in the womb 581 00:34:25,920 --> 00:34:30,640 Speaker 1: change because of high testosterone. Yeah, so there's there's theories 582 00:34:30,680 --> 00:34:33,760 Speaker 1: that we become handed in the womb because of something 583 00:34:33,840 --> 00:34:36,840 Speaker 1: like that, or birth trauma or some sort of trauma. 584 00:34:36,880 --> 00:34:41,200 Speaker 1: While and that. Yeah, it just adjusts the the the 585 00:34:41,239 --> 00:34:46,160 Speaker 1: construction of our brains. Um. Supposedly, a mother's age has 586 00:34:46,200 --> 00:34:50,880 Speaker 1: an impact on her kids. That's crazy. Statistically, speaking of 587 00:34:51,040 --> 00:34:56,200 Speaker 1: a mother, UM over forty who gives birth is has 588 00:34:56,200 --> 00:34:58,920 Speaker 1: a higher likelihood of having a lefty kid, way higher, 589 00:34:58,920 --> 00:35:02,719 Speaker 1: like hundred cent or something. Yeah, like that's pretty high. 590 00:35:02,920 --> 00:35:06,239 Speaker 1: It's more, I don't even know what that means. Yeah, 591 00:35:06,280 --> 00:35:10,319 Speaker 1: and then I guess your hand preference emerges about by 592 00:35:10,400 --> 00:35:14,280 Speaker 1: seven months, but then it's like set by age three, 593 00:35:14,560 --> 00:35:16,879 Speaker 1: So before seven months, you're just flinging poop with both 594 00:35:16,880 --> 00:35:20,040 Speaker 1: hands equally as well. Pretty much. I wrote a story 595 00:35:20,080 --> 00:35:22,520 Speaker 1: about a guy who found out as an adult that 596 00:35:22,680 --> 00:35:25,759 Speaker 1: his mother had suspected he was left handed when he 597 00:35:25,800 --> 00:35:30,440 Speaker 1: was a baby, so she immobilized his left hand so 598 00:35:30,480 --> 00:35:32,879 Speaker 1: that he would be forced to learn with his right hand. 599 00:35:34,280 --> 00:35:36,239 Speaker 1: He didn't seem to take it like that, but he did. 600 00:35:37,000 --> 00:35:39,120 Speaker 1: It came across like he felt like something had been 601 00:35:39,239 --> 00:35:41,520 Speaker 1: kind of taken from him. He said. It also explained 602 00:35:41,560 --> 00:35:44,720 Speaker 1: a lot that he was like so so with stuff 603 00:35:44,760 --> 00:35:47,279 Speaker 1: that involved its right hand seemed to be better with 604 00:35:47,400 --> 00:35:50,520 Speaker 1: his left. And um that he looked into it, and 605 00:35:50,560 --> 00:35:53,399 Speaker 1: that by doing that, which was very popular like kids 606 00:35:53,400 --> 00:35:57,160 Speaker 1: were forced to become right handed through the twentieth century. 607 00:35:57,640 --> 00:36:05,520 Speaker 1: Um that you are basically making a a less pronounced 608 00:36:05,560 --> 00:36:09,320 Speaker 1: copy of the person. You're taking the original and making 609 00:36:09,360 --> 00:36:13,360 Speaker 1: like a slightly dimmer effect simile of it, like forcing 610 00:36:13,360 --> 00:36:17,640 Speaker 1: their baying to reorganize like that interesting, whereas they thought 611 00:36:17,680 --> 00:36:19,440 Speaker 1: they were trying to give them an advantage, to actually 612 00:36:19,440 --> 00:36:22,399 Speaker 1: give them a disadvantage exactly. But I would imagine that 613 00:36:22,520 --> 00:36:26,960 Speaker 1: if you did that till say age eighteen, and then 614 00:36:27,000 --> 00:36:29,319 Speaker 1: all of a sudden started using your dominant hand that 615 00:36:29,360 --> 00:36:32,000 Speaker 1: you were naturally born with. It's all like spin ley 616 00:36:32,040 --> 00:36:34,320 Speaker 1: in week right. But then once you once you train 617 00:36:34,400 --> 00:36:38,240 Speaker 1: it to to to bulk back up, I would imagine 618 00:36:38,280 --> 00:36:41,319 Speaker 1: your brain would would be better off like that and 619 00:36:41,440 --> 00:36:45,320 Speaker 1: be fuller. So to continue the abuse right until eighteen 620 00:36:45,800 --> 00:36:48,640 Speaker 1: dis continued the abuse and then bam, you got a 621 00:36:48,640 --> 00:36:51,200 Speaker 1: super kid on your take your little old man Spinley, 622 00:36:51,200 --> 00:36:54,239 Speaker 1: hands and fingers like build them back up? And Mr 623 00:36:54,320 --> 00:36:59,840 Speaker 1: Show character remember Titanico and they were crossing the hospital. 624 00:37:01,239 --> 00:37:03,960 Speaker 1: You know they're getting back together. Yeah, yeah, that's exciting. 625 00:37:04,400 --> 00:37:08,320 Speaker 1: So p FT tweeted something some picture is very excited 626 00:37:08,400 --> 00:37:11,200 Speaker 1: the whole gang. If you want to know more about 627 00:37:11,239 --> 00:37:14,520 Speaker 1: Paul if Tompkins or Handedness or Mr Show or any 628 00:37:14,520 --> 00:37:16,840 Speaker 1: of that jazz, you can type that stuff into the 629 00:37:16,880 --> 00:37:19,640 Speaker 1: search bar at how stuff works dot com. Since I 630 00:37:19,719 --> 00:37:25,000 Speaker 1: said search, part's time for a listener mail. I'm gonna 631 00:37:25,000 --> 00:37:28,320 Speaker 1: call this Christian shout out. Hey, guys started listening to 632 00:37:28,400 --> 00:37:31,040 Speaker 1: a few months ago, and I've already listened to about 633 00:37:31,160 --> 00:37:35,600 Speaker 1: a hundred and sixty episodes. Um and by the way, 634 00:37:35,880 --> 00:37:38,400 Speaker 1: we've mentioned this a lot, but if you're just on iTunes, 635 00:37:38,400 --> 00:37:39,920 Speaker 1: say and you think, boy, these guys have got three 636 00:37:39,960 --> 00:37:44,120 Speaker 1: hundred episodes three one, Yeah, we've got like how many 637 00:37:44,160 --> 00:37:48,200 Speaker 1: now seven change yea seven hundred plus that you can 638 00:37:48,239 --> 00:37:51,759 Speaker 1: find on our website. Um. Stuff, you should know dot Com. Yeah, 639 00:37:51,800 --> 00:37:54,319 Speaker 1: and as a little pro tip, if you go onto 640 00:37:54,320 --> 00:37:56,920 Speaker 1: stuff you should know dot com a k the website 641 00:37:56,920 --> 00:38:00,359 Speaker 1: with one of the worst searches in the world. Just 642 00:38:00,440 --> 00:38:03,400 Speaker 1: do control F and open up your web browsers search 643 00:38:03,440 --> 00:38:06,279 Speaker 1: and then type it in and on our podcast archive page. 644 00:38:06,400 --> 00:38:08,600 Speaker 1: If you're looking for something, yes, okay, they'll bring it up. 645 00:38:08,719 --> 00:38:10,879 Speaker 1: Don't search for it. Don't bother searching for it using 646 00:38:10,880 --> 00:38:15,520 Speaker 1: our search tool. Are we working on that? I hope so, 647 00:38:15,600 --> 00:38:18,359 Speaker 1: because this is really bad, like it doesn't bring up 648 00:38:18,440 --> 00:38:23,000 Speaker 1: anything really yeah, wow, that's pretty bad. Otherwise it even there, 649 00:38:23,640 --> 00:38:28,200 Speaker 1: I don't know. I guess for looks lane. Um. So, 650 00:38:28,280 --> 00:38:29,800 Speaker 1: getting back to this, we do have a lot of 651 00:38:29,840 --> 00:38:31,600 Speaker 1: podcasts out there, for those of you who don't know, 652 00:38:31,840 --> 00:38:35,400 Speaker 1: we have seven hundred plus we're talking about. He's uh, 653 00:38:35,480 --> 00:38:38,400 Speaker 1: he listened to a hundred and sixty episodes. His favorite 654 00:38:38,440 --> 00:38:41,680 Speaker 1: thing about them is how you don't poop poo anybody's beliefs. 655 00:38:42,239 --> 00:38:44,080 Speaker 1: I'm a Christian, So when I was very much so 656 00:38:44,120 --> 00:38:49,040 Speaker 1: begrudgingly uh listen to your evolution suite. I was expecting 657 00:38:49,200 --> 00:38:52,120 Speaker 1: to be mad, but to my surprise, I heard a 658 00:38:52,200 --> 00:38:54,839 Speaker 1: very non bias view of evolution. Um I do believe 659 00:38:54,840 --> 00:38:56,720 Speaker 1: in evolution, but it's a long story. By the way, 660 00:38:56,920 --> 00:39:00,400 Speaker 1: after many years of hearing creation a slam uh people 661 00:39:00,400 --> 00:39:02,960 Speaker 1: talk about evolution is a very pleasant surprise. So I 662 00:39:03,040 --> 00:39:04,960 Speaker 1: just want to say thanks for putting your hearts but 663 00:39:05,040 --> 00:39:08,719 Speaker 1: not your opinions into that episode. That is from Matt 664 00:39:08,960 --> 00:39:11,839 Speaker 1: very sincerely, and uh, we've been taking a task here 665 00:39:11,840 --> 00:39:14,520 Speaker 1: and there. We try to do our best, matt um, 666 00:39:14,560 --> 00:39:17,120 Speaker 1: to keep things on the level like that, but we 667 00:39:17,200 --> 00:39:20,879 Speaker 1: are human and we do uh flounder here and there 668 00:39:20,880 --> 00:39:23,040 Speaker 1: with that, but we we try, and we appreciate your 669 00:39:23,160 --> 00:39:26,239 Speaker 1: kudos for that. Yeah, thanks man. Yeah, if you want 670 00:39:26,280 --> 00:39:29,319 Speaker 1: to give us kudos, we would love to hear about that. 671 00:39:29,440 --> 00:39:31,200 Speaker 1: Or if you have any great stories that has to 672 00:39:31,239 --> 00:39:33,719 Speaker 1: do with handedness, let us know if you had your 673 00:39:33,840 --> 00:39:37,239 Speaker 1: arm tied to your waist till you're eight as a baby. Yeah. Uh. 674 00:39:37,560 --> 00:39:41,080 Speaker 1: You can tweet to us at s Y s K podcast. 675 00:39:41,200 --> 00:39:43,400 Speaker 1: You can join us on Facebook dot com, slash stuff 676 00:39:43,400 --> 00:39:45,400 Speaker 1: you Should Know. You can send us an email to 677 00:39:45,560 --> 00:39:48,160 Speaker 1: Stuff Podcast at how Stuff Works dot com and has 678 00:39:48,160 --> 00:39:50,400 Speaker 1: always joined us at our home on the web, Stuff 679 00:39:50,400 --> 00:39:57,520 Speaker 1: you Should Know dot com for more on this and 680 00:39:57,600 --> 00:40:00,160 Speaker 1: thousands of other topics. Does it how stuff works. Dot 681 00:40:00,160 --> 00:40:07,719 Speaker 1: com