WEBVTT - From the Vault: Thirst, Part 1

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<v Speaker 1>Hey, you welcome to Stuff to Blow your Mind. My

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<v Speaker 1>name is Robert Lamb and I'm Joe McCormick, and we're

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<v Speaker 1>out this week, so we're bringing you some episodes from

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<v Speaker 1>the vault. This is part one of our series on thirst.

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<v Speaker 1>Thirst like you feel in your throat and throughout your body.

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<v Speaker 1>It's when you need something to drink thirst. Uh. This

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<v Speaker 1>episode originally published on February one. I hope you enjoy

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<v Speaker 1>Welcome to Stuff to Blow Your Mind production of My

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<v Speaker 1>Heart Radio. Hey are you welcome to Stuff to Blow

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<v Speaker 1>your Mind? My name is Robert Lamb and I'm Joe McCormick,

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<v Speaker 1>And today I wanted to start off with a short

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<v Speaker 1>reading of a few lines from the Odyssey that will

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<v Speaker 1>introduce the subject we're getting into for the next few episodes.

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<v Speaker 1>So this is from the Odyssey book eleven. I'm gonna

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<v Speaker 1>be reading from the m. Lee Wilson translation. But this

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<v Speaker 1>is a section of the story where Odysseus is describing

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<v Speaker 1>the horrors that he witnessed in Hades, and and there

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<v Speaker 1>are different kinds of horrors, Like some of the horror

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<v Speaker 1>of Hades is just a kind of profound, depressing disappointment

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<v Speaker 1>with when he's confronted with the reality of how crappy

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<v Speaker 1>it is to be dead, you know that, Like he

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<v Speaker 1>he tries to talk to Ajax, and Ajax can't even

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<v Speaker 1>really say anything. But then there's this other section where

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<v Speaker 1>he starts seeing more Dante in Inferno, kind of horrors

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<v Speaker 1>of actual tortures, and so he sees King Minos, he

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<v Speaker 1>sees a Ryan, he sees Sisyphus famously, you know, in

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<v Speaker 1>the futile labor of pushing the boulder up a hill,

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<v Speaker 1>longing to see it rolled down again. But eventually he

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<v Speaker 1>comes to a figure called Tantalus. And then here's what

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<v Speaker 1>Odysseus says about Tantalus. I saw the pain of Tantalus

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<v Speaker 1>in water to his chin so parched, no way to drink.

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<v Speaker 1>When that old man bent down towards the water, it

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<v Speaker 1>was gone. Some god had dried it up. And at

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<v Speaker 1>his feet dark earth appeared, tall leafy trees hung fruit

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<v Speaker 1>above his head, sweet figs and pomegranates, and brightly shining

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<v Speaker 1>apples and ripe olives. But when he grasped them with

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<v Speaker 1>his hands, the wind hurled them away towards the shadowy

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<v Speaker 1>clouds now. When I look at the contraposition. Of the

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<v Speaker 1>two tortures of Tantalus, You've got the one. You know,

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<v Speaker 1>he always wants to reach up to get the delicious

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<v Speaker 1>fruit from the tree, but the wind kicks up, it

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<v Speaker 1>pulls it out from his hands, and he can't ever

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<v Speaker 1>get the food. That's a that's a a torture in

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<v Speaker 1>Tartarus by starvation, which is not good. Obviously, starvation is

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<v Speaker 1>very bad. And it's probably more expressively phrase the second

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<v Speaker 1>half of this, uh, the situation, but it's actually the

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<v Speaker 1>first half that fills me with more horror when it

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<v Speaker 1>talks about how he's he's standing in water, so it's like,

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<v Speaker 1>you know, he feels it lapping around on his skin,

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<v Speaker 1>but every time he tries to kneel down to put

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<v Speaker 1>his face to it to get a drink, the water

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<v Speaker 1>just is pulled away, as if by a tide. The

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<v Speaker 1>gods dry it up away from his mouth, and he

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<v Speaker 1>can't ever have a drink. To me, that's the more

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<v Speaker 1>terrifying half of this situation. Yeah, yeah, I love the

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<v Speaker 1>image of Tantalus. Is this um this being that is uh,

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<v Speaker 1>It's he's like he's suspended between his desires, between his

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<v Speaker 1>needs needs or desires, depending on how you want to

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<v Speaker 1>frame it here, right, Well, I guess this raises questions

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<v Speaker 1>about the the biology of your shade in hades or tartarus,

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<v Speaker 1>Like does it actually need to eat and drink and

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<v Speaker 1>he can't get it? Or is this just some kind

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<v Speaker 1>of I don't know, psychological need his soul has that's

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<v Speaker 1>not really biological. I guess yeah, given what we we

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<v Speaker 1>we believe about the underworld the other myth cycles, I

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<v Speaker 1>guess it's the idea that he doesn't actually need the

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<v Speaker 1>fruit or the water to live, if you call this living.

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<v Speaker 1>He's forever suspended in the state of of on death

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<v Speaker 1>and on life. Um, but but wants to have the water,

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<v Speaker 1>wants to have the fruit. Maybe that's the kind of

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<v Speaker 1>question you're not actually supposed to bother thinking about this,

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<v Speaker 1>like the annoying pedantic question that Plato would bring up. Yeah,

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<v Speaker 1>I mean well, Speaking of of philosophy, there is the

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<v Speaker 1>concept of Burden's ass named for fourteenth century French philosopher

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<v Speaker 1>gen Burden. This one. This is a basic idea that

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<v Speaker 1>also pops up in the works of Aristotle and uh

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<v Speaker 1>al Gazali various other writers. The more common thirst related

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<v Speaker 1>version is if you have a donkey that is both

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<v Speaker 1>hungry and thirsty and placed equal distance from both food

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<v Speaker 1>and water, it will remain immobile and die. Now, this

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<v Speaker 1>may be apart from the lesson that the the thought

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<v Speaker 1>experiment is trying to produce, but I think that's not

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<v Speaker 1>necessarily true. I think there might very well be biological

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<v Speaker 1>priorities that would place access to water above access to food. Yeah,

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<v Speaker 1>it's it's one of the paradoxes that maybe doesn't You

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<v Speaker 1>can't exactly recreate it in reality and expect it to

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<v Speaker 1>be quite as a captivating but uh, abstractly it's it's

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<v Speaker 1>kind of fascinating. So as Aristotle put it, quote, a

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<v Speaker 1>man being just as hungry as thirsty and placed in

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<v Speaker 1>between food and drink must necessarily remain where he is

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<v Speaker 1>and starve to death. So obviously that's not going to

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<v Speaker 1>be the case. If you're hungry and thirsty and the

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<v Speaker 1>waiter brings you your sandwich and your your cola at

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<v Speaker 1>the same time, you're not gonna die. You don't have

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<v Speaker 1>to give the waiter special instructions. You will. You worked

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<v Speaker 1>in restaurant industry, Joe. This is not like they don't

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<v Speaker 1>tell you this, right, They don't say look, don't put

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<v Speaker 1>the drink in the food in front of the customer

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<v Speaker 1>at the same time, or they will they will just

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<v Speaker 1>remain immobile and die. It is actually broadly considered very

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<v Speaker 1>important in restaurants to get people their drinks before you

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<v Speaker 1>get them their food. If you bring them food before

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<v Speaker 1>they get their drinks, people will get very confused and upset. Well,

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<v Speaker 1>and uh, I know, I I often hear you know,

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<v Speaker 1>when you're a lot of times when you're hungry, you're

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<v Speaker 1>actually thirsty, and therefore, to avoid and prevent overeating, you

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<v Speaker 1>want to make sure you have plenty of liquids as well.

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<v Speaker 1>So yeah, like, if I'm going into a restaurant situation,

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<v Speaker 1>I definitely want my water first because I feel like

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<v Speaker 1>I'm gonna I'm gonna have a more balanced experience eating

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<v Speaker 1>lunch or dinner there, you'll certainly have a more pleasant experience.

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<v Speaker 1>Though actually sorry, I'm just introducing exceptions to every single

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<v Speaker 1>thing we say so far. But this does come up

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<v Speaker 1>in a paper that I want to look at later.

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<v Speaker 1>There is a concept that's been documented widely in animal

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<v Speaker 1>biology known as dehydration and do standardrexia, which is essentially

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<v Speaker 1>the idea that many animals species. Certainly humans and rodents

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<v Speaker 1>will naturally restrict their own food intake in response to dehydration. Again,

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<v Speaker 1>there are some exceptions, some animals like get their water

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<v Speaker 1>entirely from food and so forth. But but but typically,

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<v Speaker 1>like if you get rodents and and they're thirsty, they

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<v Speaker 1>will eat less at each meal you give them, not

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<v Speaker 1>saying that's a way to live your life, though, I

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<v Speaker 1>mean better to be hydrated. Well, you know, coming back

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<v Speaker 1>to mythology a bit, I thought we might mention just

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<v Speaker 1>a few other you know, bits of myth and folklore

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<v Speaker 1>and legend and so forth concerning thirst. Uh, because I

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<v Speaker 1>feel like, you know, we we have the sort of

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<v Speaker 1>mythological echoes of the basic biological reality, and maybe these

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<v Speaker 1>can help and inform and shape our conversation as we

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<v Speaker 1>move forward. So there's one particular story I was taken

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<v Speaker 1>with from from from ancient China. It's an ancient story

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<v Speaker 1>dating back at least as far as the shan Haijing.

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<v Speaker 1>This is the the Fabulous Book of Monsters that we

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<v Speaker 1>we did an episode, did a couple episodes on I

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<v Speaker 1>think last year, and have recently or will be rerunning

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<v Speaker 1>those episodes very soon. I think the title is sometimes

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<v Speaker 1>translated as the Classic of the Mountains and Seas. Yeah.

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<v Speaker 1>So there's a lot of a lot of mythological beings

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<v Speaker 1>and places mentioned in the book Um and Uh, and

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<v Speaker 1>there's there is this account of Kuafu. It's a it's

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<v Speaker 1>a it's a story that continues to be told today

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<v Speaker 1>in modern China, and there have been many versions of it.

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<v Speaker 1>According to Yang and and Turner. In Chinese mythology, basically,

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<v Speaker 1>what you have in Kuofu is this primordial giant with

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<v Speaker 1>two yellow snakes circling his ears and two more yellow

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<v Speaker 1>snakes in his hands. And he's powerful, very powerful, certainly,

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<v Speaker 1>but he overestimates his own power, and depending on the

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<v Speaker 1>story and the exact telling, he either challenges the Sun

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<v Speaker 1>to a race, or he just wants to chase the

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<v Speaker 1>Sun's shadow and catch the Sun. I've also read a

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<v Speaker 1>version where he wants to prolong the day by catching

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<v Speaker 1>the sun, Like if I can just get my hands

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<v Speaker 1>on the Sun and then it can't move away, it

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<v Speaker 1>can't set, the day will never end. Oh that's a

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<v Speaker 1>good plan. Yeah, Well, either way it works out. This

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<v Speaker 1>giant runs after the Sun, intending to catch it um,

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<v Speaker 1>but the Sun stays just ever out of his grasp,

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<v Speaker 1>and what happens, well, he grows ever thirstier. So eventually

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<v Speaker 1>he just has to stop for a second and he

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<v Speaker 1>drinks the Yellow river. Um. Then he stops and he

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<v Speaker 1>drinks drinks another river. But he's still so thirsty that

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<v Speaker 1>he heads for the Great Marsh to the north. But

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<v Speaker 1>on the way there he collapses. He dies of thirst.

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<v Speaker 1>And this is one of those stories that is often

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<v Speaker 1>used to explain geography. So they are different, all these

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<v Speaker 1>different details about what happens to his body once he falls,

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<v Speaker 1>what happens to his walking stick um or his club

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<v Speaker 1>once it falls, what happens to the dirt from his sandals,

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<v Speaker 1>you know, they become foothills, that kind of thing. But

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<v Speaker 1>it's also a tale about just overreaching. And so the

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<v Speaker 1>idea of of this giant chasing the sun is the

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<v Speaker 1>idea that yeah, he's powerful, but he thinks he's more

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<v Speaker 1>powerful than he is, and it's going to get him

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<v Speaker 1>into trouble. Oh that's interesting because to bring it back

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<v Speaker 1>to Tantalus, I mean, it's somewhat different, but both stories

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<v Speaker 1>have the The problem with the character is that they're

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<v Speaker 1>in some way brazen or over audacious in their challenging

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<v Speaker 1>of celestial figures or gods because the While there are

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<v Speaker 1>multiple stories of what Tantalus did in order to deserve

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<v Speaker 1>this punishment in tartarus Um, but one of the most

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<v Speaker 1>commonly received stories is that Tantalus well. So it's often

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<v Speaker 1>said that Tantalus, like uh, shared a table with the gods,

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<v Speaker 1>so he was a king, but he'd be invited up

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<v Speaker 1>to Olympus to to dine with Zeus. And apparently at

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<v Speaker 1>some point Tantalus was serving a banquet to the gods

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<v Speaker 1>and as the main course, for some reason, he decided

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<v Speaker 1>to kill and serve his own son. So he liked, yeah,

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<v Speaker 1>that's that's that's a bad choice. So he yeah, he

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<v Speaker 1>boils his own son, serves his meat to the gods. Uh.

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<v Speaker 1>It's like this horrible samelier competition, like can you tell

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<v Speaker 1>this is my son you're eating? And the gods can

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<v Speaker 1>tell they are good semeliers, so they figure it out

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<v Speaker 1>and uh. And apparently cannibalism and the kill of ken

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<v Speaker 1>were considered among the worst taboos in ancient Greece, So

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<v Speaker 1>it's like a story of the guy doing like the worst,

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<v Speaker 1>most awful thing you can imagine in order to embarrass

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<v Speaker 1>or humiliate the gods, and the gods catch him doing it,

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<v Speaker 1>so they send him to this horrible punishment in the afterlife.

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<v Speaker 1>And so I do think it's kind of telling that

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<v Speaker 1>this is a guy who does like the worst thing

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<v Speaker 1>you could possibly imagine doing in in ancient Greek ideas

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<v Speaker 1>like that, he commits the worst violent taboos, killing his

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<v Speaker 1>own son and trying to get the gods to commit cannibalism.

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<v Speaker 1>And what what is the punishment for that? It's eternal

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<v Speaker 1>unsatiable hunger and thirst. Yeah, yeah, there's this. There's something

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<v Speaker 1>about thirst, especially that it's just so it's so primal

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<v Speaker 1>and it's uh, and it's this thing that can just

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<v Speaker 1>crescendo towards madness and of course death. Um. So we

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<v Speaker 1>we we find numerous accounts where the gods become involved

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<v Speaker 1>with human thirst. Um. There's an interesting story in Hindu traditions.

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<v Speaker 1>This one appears in the Mahaparata. It's about a desert

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<v Speaker 1>dwelling sage by the name of utanka Uh and Utankah

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<v Speaker 1>is Uh. There are various accounts of you know, of

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<v Speaker 1>what he got up to, but there's basically one of

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<v Speaker 1>the key ideas here is that he was witnessed to

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<v Speaker 1>Krishno's universal form. So this is the same universal form

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<v Speaker 1>that shown to Argina during the famous uh you know,

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<v Speaker 1>now I am become death encounter. Oh yeah, okay. But

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<v Speaker 1>with Utanka, he's given a special divine boone. Uh. So

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<v Speaker 1>he's told whenever he feels thirst, his thirst will be quenched.

0:12:40.640 --> 0:12:44.720
<v Speaker 1>Um So. You also there's this idea that he's followed

0:12:44.760 --> 0:12:48.000
<v Speaker 1>by by rain clouds even in the desert, and so

0:12:48.080 --> 0:12:53.080
<v Speaker 1>sometimes uh you'll see these clouds in real life referred

0:12:53.080 --> 0:12:58.560
<v Speaker 1>to as Utanka's clouds. Um So, the clouds sent by

0:12:58.600 --> 0:13:02.200
<v Speaker 1>the gods to follow him around ound. And there's another

0:13:02.240 --> 0:13:05.400
<v Speaker 1>story to that involves him him thirsting and the thirst

0:13:05.440 --> 0:13:08.960
<v Speaker 1>being quenched uh and but water being sent to him

0:13:10.080 --> 0:13:13.320
<v Speaker 1>via a member of a lesser cast, a lower cast,

0:13:13.840 --> 0:13:16.719
<v Speaker 1>and and then he refuses. As it turns out the

0:13:17.320 --> 0:13:20.360
<v Speaker 1>water in question was going to be uh the potion

0:13:20.400 --> 0:13:23.120
<v Speaker 1>of immortality, but he was not ready to receive it

0:13:23.200 --> 0:13:25.760
<v Speaker 1>spiritually because he was not willing to accept it from

0:13:25.760 --> 0:13:29.720
<v Speaker 1>this individual. M hmm. Coming back to the earlier detail

0:13:29.800 --> 0:13:33.120
<v Speaker 1>in this where Utanka has given the boon that whenever

0:13:33.200 --> 0:13:36.080
<v Speaker 1>he is thirsty, his thirst will be quenched. I wonder

0:13:37.520 --> 0:13:40.080
<v Speaker 1>what is the what is the more specific imagination of

0:13:40.120 --> 0:13:44.320
<v Speaker 1>that scenario, like that that water will appear somehow for

0:13:44.400 --> 0:13:47.760
<v Speaker 1>him to drink, or that there's a kind of quinching

0:13:47.840 --> 0:13:50.280
<v Speaker 1>without water, in which case it kind of makes you think,

0:13:50.400 --> 0:13:54.320
<v Speaker 1>what is quinching? Because that when I think of the

0:13:54.320 --> 0:13:57.720
<v Speaker 1>feeling of quenching thirst, it is specifically the feeling of

0:13:57.760 --> 0:14:03.120
<v Speaker 1>like water filling your mouth and going down your throat. Yeah, yeah,

0:14:03.120 --> 0:14:06.160
<v Speaker 1>the it's not just the idea that we're going to

0:14:06.200 --> 0:14:09.560
<v Speaker 1>suddenly feel magically, I'll go across. How would that happen? Right?

0:14:09.600 --> 0:14:11.120
<v Speaker 1>You can't just turn it off with a switch. Our

0:14:11.240 --> 0:14:14.560
<v Speaker 1>our one our primary means of alleviating thirst is to

0:14:14.640 --> 0:14:17.600
<v Speaker 1>drink water. And therefore, you know, it's hard to disconnect

0:14:17.600 --> 0:14:19.480
<v Speaker 1>the too well. Actually, one of the some of the

0:14:19.520 --> 0:14:21.040
<v Speaker 1>studies I want to talk about as we go on

0:14:21.120 --> 0:14:23.720
<v Speaker 1>in this series have to do with the what is

0:14:23.760 --> 0:14:27.560
<v Speaker 1>the relationship between the feeling of thirst quenching and the

0:14:27.640 --> 0:14:29.760
<v Speaker 1>hydration of the body. It's not as direct as you

0:14:29.840 --> 0:14:35.400
<v Speaker 1>might think. Now, another example of supernatural thirst, and in

0:14:35.440 --> 0:14:38.520
<v Speaker 1>this case also hunger um. Of course, you have in

0:14:38.640 --> 0:14:42.720
<v Speaker 1>verious Eastern traditions, you have hungry ghosts and the the

0:14:42.760 --> 0:14:45.280
<v Speaker 1>gaki are a type of hungry ghost in the tradition

0:14:45.280 --> 0:14:50.320
<v Speaker 1>of Japan, also described as as always hungry and always thirsty,

0:14:50.480 --> 0:14:53.440
<v Speaker 1>just monsters of torments, so that have huge bellies, be

0:14:53.600 --> 0:14:57.120
<v Speaker 1>steel heads, talents, and so forth. And their home is

0:14:57.160 --> 0:15:01.000
<v Speaker 1>the barren wasteland realm of Gakito, and they sometimes dragged

0:15:01.040 --> 0:15:03.600
<v Speaker 1>the dying to hell, but they can be driven out

0:15:03.680 --> 0:15:07.280
<v Speaker 1>through ceremonies. I think that they also are often illustrated

0:15:07.280 --> 0:15:10.320
<v Speaker 1>as having very narrow necks, so it's like their hunger

0:15:10.520 --> 0:15:14.320
<v Speaker 1>there is great, their belly is great, their neck is narrow,

0:15:14.400 --> 0:15:17.320
<v Speaker 1>like their their throat is narrow. Their ability to quench uh,

0:15:17.440 --> 0:15:22.400
<v Speaker 1>their their bodily hunger and thirst is entirely insufficient. Of course,

0:15:22.400 --> 0:15:26.400
<v Speaker 1>how hungry ghosts are, you know, widespread again in Eastern traditions.

0:15:26.920 --> 0:15:29.640
<v Speaker 1>But but I ran across an interesting tradition from pre

0:15:29.720 --> 0:15:33.120
<v Speaker 1>Islamic Arab culture that I'd never heard of before that

0:15:33.160 --> 0:15:36.400
<v Speaker 1>I thought was really interesting, and it concerns owls. I

0:15:36.520 --> 0:15:39.400
<v Speaker 1>was reading Echoes of a Thirsty Owl by T. M. L.

0:15:39.480 --> 0:15:42.960
<v Speaker 1>Hammer and published in the Journal of Near Eastern Studies

0:15:42.960 --> 0:15:46.960
<v Speaker 1>from so The author here writes that there was an

0:15:47.040 --> 0:15:50.080
<v Speaker 1>idea you know again in the pre Islamic Arab cultures

0:15:50.160 --> 0:15:53.680
<v Speaker 1>that the soul of a bird was quote unquote spread

0:15:53.720 --> 0:15:56.360
<v Speaker 1>out through the body of a human being, and when

0:15:56.400 --> 0:16:00.720
<v Speaker 1>the human died, um, the resulting birds are called the

0:16:00.760 --> 0:16:04.119
<v Speaker 1>body and cried out over the grave of the deceased.

0:16:04.600 --> 0:16:07.040
<v Speaker 1>So the and then in time this bird grows and

0:16:07.080 --> 0:16:10.640
<v Speaker 1>it becomes a savage and shrieking owl, and the owl,

0:16:10.640 --> 0:16:14.360
<v Speaker 1>of course haunts the places of death. Well that almost

0:16:14.440 --> 0:16:17.120
<v Speaker 1>makes me wonder. I mean, I think about the spooky

0:16:17.160 --> 0:16:20.040
<v Speaker 1>movie trope of having an owl hooting in the darkness

0:16:20.080 --> 0:16:22.640
<v Speaker 1>in the graveyard. But I don't know. The more I

0:16:22.640 --> 0:16:25.040
<v Speaker 1>think about that, that's probably a coincidence. Well, I mean,

0:16:25.080 --> 0:16:29.600
<v Speaker 1>owls are are are are associated with with death and

0:16:29.600 --> 0:16:33.160
<v Speaker 1>and the supernatural throughout various cultures. You know, because they're

0:16:33.200 --> 0:16:37.000
<v Speaker 1>they're creatures of the night. They fly so silently that

0:16:37.080 --> 0:16:39.840
<v Speaker 1>it's almost like they're not even there. Um, you know,

0:16:39.880 --> 0:16:43.400
<v Speaker 1>they have those large eyes, their their their head appears

0:16:43.440 --> 0:16:48.360
<v Speaker 1>to have various kind of humanoid qualities. Uh So, you know,

0:16:49.160 --> 0:16:51.080
<v Speaker 1>I think there is some connection there, maybe not not

0:16:51.120 --> 0:16:54.520
<v Speaker 1>a direct connection, about a connection via the the the

0:16:54.560 --> 0:16:58.560
<v Speaker 1>widespread associations and various cultures between the owl and the

0:16:58.720 --> 0:17:02.760
<v Speaker 1>and the dead, and also the various omens. You know,

0:17:02.840 --> 0:17:06.240
<v Speaker 1>sometimes in different cultures the owl is a is a

0:17:06.280 --> 0:17:08.960
<v Speaker 1>dire omen to behold. Well, I guess this would depend

0:17:09.000 --> 0:17:11.600
<v Speaker 1>on the owl species, but also their vocalizations have to

0:17:11.720 --> 0:17:14.960
<v Speaker 1>play a role in in spooky associations. Yeah, yeah, and

0:17:15.000 --> 0:17:16.960
<v Speaker 1>I think and also I mean, sometimes owls don't make

0:17:17.000 --> 0:17:19.000
<v Speaker 1>a sound at all. Again, either they're flying silently or

0:17:19.040 --> 0:17:23.000
<v Speaker 1>they're just sitting there silently, just kind of watching, and

0:17:23.040 --> 0:17:26.800
<v Speaker 1>so uh may be connected to that. That that that

0:17:26.920 --> 0:17:29.440
<v Speaker 1>it's also said that these owls may also just sort

0:17:29.440 --> 0:17:31.879
<v Speaker 1>of check in on sons and grandsons to see what

0:17:32.000 --> 0:17:36.159
<v Speaker 1>happens after they have died. Other traditions say that the

0:17:36.200 --> 0:17:39.600
<v Speaker 1>owl returned to the grave once every century. And then

0:17:39.640 --> 0:17:42.760
<v Speaker 1>there's this idea that in the event that the deceased

0:17:42.920 --> 0:17:46.000
<v Speaker 1>might seek vengeance for something or another, the grave of

0:17:46.040 --> 0:17:49.159
<v Speaker 1>the dead should be watered to quote slake the thirst

0:17:49.240 --> 0:17:52.240
<v Speaker 1>of the dead. Oh wow, yeah, now, of course, and

0:17:52.240 --> 0:17:54.720
<v Speaker 1>this we're probably getting into that. You know something we

0:17:54.720 --> 0:17:57.320
<v Speaker 1>we hinted out already, the idea that that thirst takes

0:17:57.320 --> 0:18:00.919
<v Speaker 1>on so many different forms, and the water quenches the thirst,

0:18:01.000 --> 0:18:02.600
<v Speaker 1>or the liquid the quenches that thirst takes on so

0:18:02.640 --> 0:18:06.160
<v Speaker 1>many different forms in our traditions. Like is thirst. Uh,

0:18:06.560 --> 0:18:09.200
<v Speaker 1>thirst is of course something we all feel. It's a

0:18:09.400 --> 0:18:13.360
<v Speaker 1>you know, we all need water. But depending on how

0:18:13.400 --> 0:18:16.000
<v Speaker 1>it's written up, you could you can describe thirst as

0:18:16.040 --> 0:18:18.480
<v Speaker 1>a as a as a need, or as a desire,

0:18:18.560 --> 0:18:22.120
<v Speaker 1>as something that your will has the ability to overcome

0:18:22.280 --> 0:18:26.280
<v Speaker 1>or not overcome. Uh. You know, thirst can be uh

0:18:26.760 --> 0:18:29.720
<v Speaker 1>portrayed as something positive, like the thirst for knowledge, the

0:18:29.800 --> 0:18:34.600
<v Speaker 1>thirst for for for for God. But also thirst can

0:18:34.640 --> 0:18:37.239
<v Speaker 1>be seen as like the thirst for for wine, or

0:18:37.280 --> 0:18:40.280
<v Speaker 1>for blood or for vengeance. Well, yeah, exactly. So I

0:18:40.359 --> 0:18:43.280
<v Speaker 1>was also thinking about the abstract metaphors of thirst that

0:18:43.320 --> 0:18:47.639
<v Speaker 1>we use um and what it means to to choose

0:18:47.680 --> 0:18:50.600
<v Speaker 1>that word, in particular, to to say that you want

0:18:50.720 --> 0:18:53.359
<v Speaker 1>something by saying that you thirst for it. So, in

0:18:53.400 --> 0:18:56.760
<v Speaker 1>the example of someone who has a thirst for vengeance,

0:18:56.800 --> 0:19:00.520
<v Speaker 1>how is that different from just wanting vengeance? To me?

0:19:00.680 --> 0:19:04.440
<v Speaker 1>At least in that case, thirst as a metaphor, as

0:19:04.440 --> 0:19:08.919
<v Speaker 1>a metaphor for want, implies a kind of irrational desperation

0:19:09.280 --> 0:19:12.359
<v Speaker 1>in the in the acquisition behavior, something that will be

0:19:12.359 --> 0:19:17.200
<v Speaker 1>sought without hindrance and without reason. Now, obviously that wouldn't

0:19:17.240 --> 0:19:20.600
<v Speaker 1>exactly apply to other metaphorical uses of thirst, like you

0:19:20.600 --> 0:19:24.720
<v Speaker 1>said the thirst for knowledge. But again that that word

0:19:24.800 --> 0:19:27.320
<v Speaker 1>choice seems to me to imply something different than somebody

0:19:27.400 --> 0:19:31.800
<v Speaker 1>just saying somebody likes knowledge or seeks knowledge. It suggests

0:19:31.840 --> 0:19:35.800
<v Speaker 1>a kind of primal need. I guess, yeah, And I

0:19:35.840 --> 0:19:37.720
<v Speaker 1>guess you also have to factor in that. You know,

0:19:38.000 --> 0:19:40.440
<v Speaker 1>for a lot of us, we live in in very

0:19:40.440 --> 0:19:47.720
<v Speaker 1>water rich environments and water rich cultures and uh socioeconomic places.

0:19:47.840 --> 0:19:51.399
<v Speaker 1>So you know, we we we don't feel true thirst

0:19:51.480 --> 0:19:53.920
<v Speaker 1>for the most part. You know, we don't. We don't

0:19:53.920 --> 0:19:58.720
<v Speaker 1>feel the thirst that is approaching madness and death, um

0:19:58.800 --> 0:20:01.199
<v Speaker 1>and the and and then again it comes down to,

0:20:01.240 --> 0:20:02.920
<v Speaker 1>like what is the person thirsting for? If you're talking

0:20:02.960 --> 0:20:07.080
<v Speaker 1>about somebody feeling a mighty thirst, but you're alluding to

0:20:07.160 --> 0:20:10.440
<v Speaker 1>their desire to have an alcoholic beverage, like that's that's

0:20:10.440 --> 0:20:12.640
<v Speaker 1>a slightly different thing that just talking about Oh well,

0:20:12.640 --> 0:20:14.800
<v Speaker 1>this is this is thirsty work that they're doing, and

0:20:14.880 --> 0:20:16.679
<v Speaker 1>you know, implying that they're just they're just building up

0:20:16.680 --> 0:20:21.080
<v Speaker 1>a natural uh need for a big draft of water

0:20:21.240 --> 0:20:25.240
<v Speaker 1>to satisfy their thirst. It seems when people use thirst

0:20:25.320 --> 0:20:29.159
<v Speaker 1>to talk about alcohol. I always detect an air of

0:20:29.160 --> 0:20:31.680
<v Speaker 1>of irony, and that just like it's supposed to be

0:20:31.720 --> 0:20:33.800
<v Speaker 1>a little bit funny that you're using it that way,

0:20:34.200 --> 0:20:37.720
<v Speaker 1>right because if you're truly thirsty, alcohol is not what

0:20:37.760 --> 0:20:41.560
<v Speaker 1>you should be using right now. Just to come back

0:20:41.560 --> 0:20:45.480
<v Speaker 1>to the the idea of these owls briefly, apparently some

0:20:45.560 --> 0:20:49.119
<v Speaker 1>writings say that the blood and the brain in the

0:20:49.640 --> 0:20:52.639
<v Speaker 1>in the deceased fused together after death to form the owl.

0:20:53.040 --> 0:20:56.160
<v Speaker 1>Others would say that it was born of one's bones

0:20:56.640 --> 0:20:59.359
<v Speaker 1>and that the owl would then erupt from the head,

0:21:00.280 --> 0:21:05.080
<v Speaker 1>which I think is a wonderful and horrifying supernatural uh picture.

0:21:06.359 --> 0:21:08.359
<v Speaker 1>But it was a reference in a number of different

0:21:08.600 --> 0:21:13.160
<v Speaker 1>poems um by a lot of pre Islamic Arab poets.

0:21:13.200 --> 0:21:17.560
<v Speaker 1>The Arabic poet Alan Bari wrote, quote and it is

0:21:17.600 --> 0:21:20.320
<v Speaker 1>said that man, when he has killed and his revenge

0:21:20.400 --> 0:21:23.359
<v Speaker 1>is not taken, an owl comes out of his grave

0:21:23.480 --> 0:21:28.160
<v Speaker 1>and then continues screeching, quench me, quench me, continuing so

0:21:28.400 --> 0:21:32.520
<v Speaker 1>until his killer is killed. Anyway, that that article is

0:21:32.560 --> 0:21:36.640
<v Speaker 1>titled Echoes of a thirsty owl um. If anyone's interested,

0:21:36.680 --> 0:21:39.040
<v Speaker 1>I recommend reading that. He also compared, you know, compares

0:21:39.080 --> 0:21:42.520
<v Speaker 1>it to various other traditions concerning the owl as some

0:21:42.560 --> 0:21:45.359
<v Speaker 1>sort of a supernatural being. He talks a little bit

0:21:45.359 --> 0:21:49.119
<v Speaker 1>about about the role of the owl and Greek mythology

0:21:49.200 --> 0:21:58.440
<v Speaker 1>and so forth. Now we we can't very well cover

0:21:58.480 --> 0:22:01.439
<v Speaker 1>a complete cultural history if him and thirst here, but

0:22:01.600 --> 0:22:03.560
<v Speaker 1>it is worth thro having him that thirst is an

0:22:03.560 --> 0:22:08.280
<v Speaker 1>important aspect of history and civilization UM, in in obvious

0:22:08.359 --> 0:22:10.800
<v Speaker 1>ways and maybe sometimes in less obvious ways. I was

0:22:10.840 --> 0:22:15.399
<v Speaker 1>reading a article in the Journal of European Archaeology by

0:22:15.640 --> 0:22:19.960
<v Speaker 1>uh Slavamil Vehicle titled the Archaeology of Thirst, and in

0:22:20.040 --> 0:22:23.960
<v Speaker 1>it the author points out that naturally, the human satisfaction

0:22:24.000 --> 0:22:26.760
<v Speaker 1>of thirst is an essential part of the human experience,

0:22:27.200 --> 0:22:30.440
<v Speaker 1>and it's a it's of course of great interest in archaeology,

0:22:30.440 --> 0:22:33.439
<v Speaker 1>but a number of obstacles have to be overcome. So

0:22:33.480 --> 0:22:36.400
<v Speaker 1>first of all, you just have the volatile nature of liquids.

0:22:36.880 --> 0:22:40.320
<v Speaker 1>You also have the scant chemical signatures to be found

0:22:40.400 --> 0:22:46.440
<v Speaker 1>inside ancient drinking vessels UM, also scarce paleo botanical analysis

0:22:46.480 --> 0:22:51.439
<v Speaker 1>of those residues. UM. They also mentioned quote the functionally

0:22:51.640 --> 0:22:55.280
<v Speaker 1>unspecific nature of most vessels, which I thought was interesting,

0:22:55.320 --> 0:23:00.439
<v Speaker 1>reminding me of our our holiday discussion of leg shaped vessels. Yeah,

0:23:00.800 --> 0:23:02.760
<v Speaker 1>it's a hard. A lot of times people are like,

0:23:02.800 --> 0:23:05.080
<v Speaker 1>I don't know what people would put in this leg. Yeah,

0:23:05.240 --> 0:23:07.600
<v Speaker 1>like we can assume they would put oil in it,

0:23:07.880 --> 0:23:09.639
<v Speaker 1>you know, but it depending on what the vessel is

0:23:09.680 --> 0:23:12.400
<v Speaker 1>and what the culture is, and how much additional information

0:23:12.440 --> 0:23:15.399
<v Speaker 1>we have. We might just have to guess and be like, Okay,

0:23:15.480 --> 0:23:17.679
<v Speaker 1>it seems like you might drink out of this, or

0:23:17.720 --> 0:23:19.800
<v Speaker 1>you might just or maybe this is just for storing

0:23:19.840 --> 0:23:22.160
<v Speaker 1>some sort of oil. On top of that, we often

0:23:22.200 --> 0:23:27.560
<v Speaker 1>have scant iconographical information. Also, this is a big one,

0:23:27.600 --> 0:23:29.520
<v Speaker 1>and this is this applies to far more than just

0:23:29.640 --> 0:23:34.200
<v Speaker 1>drinking vessels. But if the vessel is organic in nature,

0:23:34.880 --> 0:23:39.119
<v Speaker 1>we may not have any uh, surviving examples of what

0:23:39.200 --> 0:23:42.080
<v Speaker 1>it was. And on top of that, by and large,

0:23:42.080 --> 0:23:44.919
<v Speaker 1>we tend to focus on exceptional examples of drinking and

0:23:44.960 --> 0:23:48.160
<v Speaker 1>storage vessels, which of course limits study to a very

0:23:48.200 --> 0:23:50.320
<v Speaker 1>slim part of a given culture. You know. So it's

0:23:50.359 --> 0:23:54.919
<v Speaker 1>like a highly ornate decorative piece that you know, maybe

0:23:55.119 --> 0:23:58.280
<v Speaker 1>is of the same shape and basic function is what

0:23:58.320 --> 0:24:01.600
<v Speaker 1>people would have in general been using to drink water

0:24:01.720 --> 0:24:05.159
<v Speaker 1>or store water, etcetera. But maybe not like maybe it

0:24:05.320 --> 0:24:09.200
<v Speaker 1>is um it's it's more about looking interesting as opposed

0:24:09.200 --> 0:24:12.399
<v Speaker 1>to anything else. But the archaeology of thirst ends up

0:24:12.480 --> 0:24:18.200
<v Speaker 1>encompassing some very ancient examples UM, including things like neolithic wells. Um.

0:24:18.480 --> 0:24:21.280
<v Speaker 1>Water is the most basic means of meeting human thirst,

0:24:21.760 --> 0:24:25.199
<v Speaker 1>and it's taken on mundane and fantastic connotations at times.

0:24:25.280 --> 0:24:26.919
<v Speaker 1>But on top of this, of course humans have come

0:24:26.960 --> 0:24:31.800
<v Speaker 1>to drink SAPs blood, of course, various concoctions such as

0:24:31.880 --> 0:24:35.800
<v Speaker 1>meat and wine and beer and more. But but I

0:24:35.840 --> 0:24:39.440
<v Speaker 1>guess water, you know, water remains the big one. Obviously.

0:24:39.920 --> 0:24:42.359
<v Speaker 1>Another idea worth mentioning in all of this that I

0:24:42.400 --> 0:24:45.199
<v Speaker 1>was reading about UM is the idea that, okay, so

0:24:45.280 --> 0:24:48.399
<v Speaker 1>human thirst is of course ubiquitous. Everybody is going to thirst,

0:24:48.440 --> 0:24:52.160
<v Speaker 1>everyone needs water UM. And so if you look back

0:24:52.480 --> 0:24:57.200
<v Speaker 1>um to to Jewish and Islamic traditions, you you find

0:24:57.200 --> 0:25:01.119
<v Speaker 1>in both legal traditions this idea of the right of

0:25:01.280 --> 0:25:05.520
<v Speaker 1>thirst UM. The the idea of being that like every

0:25:05.520 --> 0:25:08.720
<v Speaker 1>every every human government by this law, has this right

0:25:08.760 --> 0:25:12.240
<v Speaker 1>of thirst UH to this right to water via their

0:25:12.240 --> 0:25:15.800
<v Speaker 1>own thirst. And in Islamic law, apparently this extended to

0:25:15.880 --> 0:25:19.600
<v Speaker 1>animals as well. Animals had the right of thirst, which

0:25:19.720 --> 0:25:22.600
<v Speaker 1>gave them meant that they had a right to access

0:25:22.640 --> 0:25:25.440
<v Speaker 1>water based on their thirst. But but it's also it's

0:25:25.440 --> 0:25:28.720
<v Speaker 1>interesting how you know this sort of this this foreshadows

0:25:28.920 --> 0:25:31.480
<v Speaker 1>a lot of our our modern relationship with water, the

0:25:31.520 --> 0:25:34.439
<v Speaker 1>idea that that the right to water is classified as

0:25:34.440 --> 0:25:37.800
<v Speaker 1>a basic human right by the United Nations. UM. But

0:25:37.840 --> 0:25:40.320
<v Speaker 1>of course, at the same time, uh, not everyone has

0:25:40.920 --> 0:25:43.879
<v Speaker 1>equal access to to water and uh, and this is

0:25:43.920 --> 0:25:46.159
<v Speaker 1>going to continue to be a problem moving forward, and

0:25:46.200 --> 0:25:48.280
<v Speaker 1>of course you can't help. But then take all of

0:25:48.320 --> 0:25:52.479
<v Speaker 1>that and relate it back to our metaphorical treatment of thirst.

0:25:52.520 --> 0:25:55.359
<v Speaker 1>You know, how does the how does that change? You know,

0:25:55.400 --> 0:25:58.600
<v Speaker 1>if you're if you're if you're talking about thirst in

0:25:58.680 --> 0:26:03.480
<v Speaker 1>reference to spiritual needs and um, and you know, a

0:26:03.560 --> 0:26:06.360
<v Speaker 1>thirst for knowledge, Like, how is that different if you're

0:26:06.760 --> 0:26:10.040
<v Speaker 1>if you're expressing that, uh within a you know, in

0:26:10.080 --> 0:26:12.560
<v Speaker 1>a place where there where water is plentiful, where a

0:26:12.600 --> 0:26:16.159
<v Speaker 1>drinking water is plentiful, or a place where access is

0:26:16.200 --> 0:26:18.360
<v Speaker 1>more limited. But I guess before we can answer any

0:26:18.359 --> 0:26:20.679
<v Speaker 1>of these questions, we need to back up quite a

0:26:20.680 --> 0:26:24.520
<v Speaker 1>bit and just talk about thirst as a biological reality.

0:26:24.600 --> 0:26:27.040
<v Speaker 1>What is it and how does it work? Yeah, And

0:26:27.080 --> 0:26:30.440
<v Speaker 1>so this was actually rather interesting to me because it

0:26:30.480 --> 0:26:34.080
<v Speaker 1>turns out I knew less about thirst than I realized.

0:26:35.480 --> 0:26:38.240
<v Speaker 1>And uh, and what we do know about thirst and

0:26:38.280 --> 0:26:41.400
<v Speaker 1>what we don't know about thirst are both pretty interesting.

0:26:42.480 --> 0:26:46.440
<v Speaker 1>So I was reading an article called just called Thirst

0:26:46.600 --> 0:26:51.800
<v Speaker 1>that was published in Current Biology in sixteen by David E. Leeb,

0:26:52.080 --> 0:26:55.879
<v Speaker 1>Christopher A. Zimmerman, and Zachary A. Night. And this article

0:26:56.000 --> 0:26:59.720
<v Speaker 1>is essentially a summary of all the existing research on thirst.

0:26:59.800 --> 0:27:02.880
<v Speaker 1>It is, as of the year twenty sixteen, a sort

0:27:02.920 --> 0:27:05.320
<v Speaker 1>of perfect primmer catching everybody up on what do we

0:27:05.359 --> 0:27:08.120
<v Speaker 1>know about Thurston? What do we not know? Now? Before

0:27:08.160 --> 0:27:10.439
<v Speaker 1>we get into the meat of that discussion? I guess, uh,

0:27:10.600 --> 0:27:14.439
<v Speaker 1>to to just cover the very basics, Uh, the first

0:27:14.480 --> 0:27:16.639
<v Speaker 1>fact before we get into anything else. You are a

0:27:16.640 --> 0:27:19.119
<v Speaker 1>water bag. That that is what we are. That is

0:27:19.160 --> 0:27:20.919
<v Speaker 1>what all of us are. We we are not just

0:27:21.040 --> 0:27:25.280
<v Speaker 1>simple water bags, but our bodies are essentially water bags

0:27:25.320 --> 0:27:28.919
<v Speaker 1>over any other material description. All the animal life that

0:27:28.960 --> 0:27:31.679
<v Speaker 1>currently lives on land evolved from creatures that used to

0:27:31.720 --> 0:27:33.919
<v Speaker 1>live in the ocean, where you're surrounded by water all

0:27:33.960 --> 0:27:36.600
<v Speaker 1>the time. And when we evolved to live on land,

0:27:36.640 --> 0:27:40.680
<v Speaker 1>we had to create essentially bags that would contain water

0:27:40.800 --> 0:27:44.639
<v Speaker 1>to take with us. Because all of the of the

0:27:44.720 --> 0:27:49.240
<v Speaker 1>biological chemistry, the biochemistry of life takes place in water,

0:27:49.359 --> 0:27:53.520
<v Speaker 1>in solutions of water, and so as water bags. You know,

0:27:53.600 --> 0:27:56.560
<v Speaker 1>we we are complex autonomous water bags. But most of

0:27:56.560 --> 0:28:01.479
<v Speaker 1>those complex autonomous activities actually re wire that there be

0:28:01.520 --> 0:28:05.800
<v Speaker 1>a fairly precise amount of water in the bag and

0:28:06.200 --> 0:28:11.639
<v Speaker 1>a fairly precise concentration of various substances things like sodium

0:28:11.720 --> 0:28:16.159
<v Speaker 1>for instance, that pretty precise amounts be dissolved in the

0:28:16.200 --> 0:28:20.040
<v Speaker 1>water in the bag, and so various processes of life

0:28:20.160 --> 0:28:23.840
<v Speaker 1>are constantly leading to water coming in and out of

0:28:23.880 --> 0:28:27.480
<v Speaker 1>the bag. So there there are several common routes of

0:28:27.520 --> 0:28:31.520
<v Speaker 1>water to be added to the bag. Were familiar with

0:28:31.560 --> 0:28:34.199
<v Speaker 1>the most common of those, which is drinking fluid, drinking

0:28:34.200 --> 0:28:37.760
<v Speaker 1>water or or fluids that are mainly water, or eating

0:28:37.800 --> 0:28:41.600
<v Speaker 1>food with water content. And that the second one, they're

0:28:41.640 --> 0:28:45.880
<v Speaker 1>eating food with water content, is less prominent for humans

0:28:45.880 --> 0:28:48.120
<v Speaker 1>because you know, we typically drink a glass of water

0:28:48.400 --> 0:28:51.240
<v Speaker 1>with food or between meals or whatever. But there are

0:28:51.280 --> 0:28:54.480
<v Speaker 1>some animals that that basically get almost all of their

0:28:54.520 --> 0:28:58.920
<v Speaker 1>water from their food. Yeah, this includes certain desert species

0:28:58.960 --> 0:29:02.560
<v Speaker 1>such as the kangaroo rat and the kangaroo mouse, which,

0:29:02.600 --> 0:29:06.959
<v Speaker 1>of course, on the planet Iracus becomes the the the

0:29:06.960 --> 0:29:10.400
<v Speaker 1>the mouse. Deep. Um. We also have things like the

0:29:10.440 --> 0:29:14.280
<v Speaker 1>sand cat, the sand gazelle. Um, and uh, I know,

0:29:14.400 --> 0:29:17.480
<v Speaker 1>just in my household, it also seems to include my cat,

0:29:18.120 --> 0:29:22.760
<v Speaker 1>who does not seem to drink water at all anymore. Um.

0:29:22.920 --> 0:29:26.040
<v Speaker 1>We we have to lean heavily on moist foods to

0:29:26.160 --> 0:29:29.920
<v Speaker 1>get to get her her liquids, so feeding her wet food,

0:29:30.040 --> 0:29:32.480
<v Speaker 1>adding a little bit of water like sneaking it into

0:29:32.520 --> 0:29:34.400
<v Speaker 1>the wet food. And yet if we make the wet

0:29:34.400 --> 0:29:37.160
<v Speaker 1>food too wet, she will say, no, it's too much

0:29:37.200 --> 0:29:39.840
<v Speaker 1>like water. I will not have it, And then we

0:29:39.840 --> 0:29:42.360
<v Speaker 1>put out water for We've tried the fountains, we've tried everything.

0:29:42.360 --> 0:29:45.080
<v Speaker 1>The only thing she ever actually drank out of was

0:29:45.080 --> 0:29:46.720
<v Speaker 1>a fish tank when we had a fish tank, and

0:29:46.760 --> 0:29:49.120
<v Speaker 1>then she would not stop drinking out of the fish tank.

0:29:49.160 --> 0:29:51.640
<v Speaker 1>But any other thing we've tried, she hasn't gone for.

0:29:52.280 --> 0:29:54.720
<v Speaker 1>And so when she's had some issues before, it's like,

0:29:55.120 --> 0:29:59.400
<v Speaker 1>you know, she's clearly dehydrated. In the past, we even

0:29:59.440 --> 0:30:02.200
<v Speaker 1>had to I had to use an ivy to give

0:30:02.200 --> 0:30:04.160
<v Speaker 1>her the water. So we we still have a whole

0:30:04.200 --> 0:30:06.160
<v Speaker 1>bunch of bags of fluid around in case she has

0:30:06.200 --> 0:30:08.920
<v Speaker 1>any any flare ups. Of her issues, but in terms

0:30:08.960 --> 0:30:12.760
<v Speaker 1>of just like drinking straight water, she's not interested at all. Wow. Well,

0:30:12.800 --> 0:30:16.520
<v Speaker 1>simultaneously that is kind of fascinating, But also I feel

0:30:16.560 --> 0:30:18.400
<v Speaker 1>for her and I feel for you guys that that's

0:30:18.480 --> 0:30:21.400
<v Speaker 1>very frustrating. Now we're weird. I mean, everybody seems to

0:30:21.400 --> 0:30:23.680
<v Speaker 1>be at a comfortable level right now. She's she seems

0:30:23.680 --> 0:30:25.680
<v Speaker 1>to be getting all the liquid she needs through her

0:30:26.120 --> 0:30:30.360
<v Speaker 1>her meat paste. But but it's it's weird with cats

0:30:30.360 --> 0:30:32.920
<v Speaker 1>because yeah, I think some people have this experience with

0:30:32.920 --> 0:30:36.120
<v Speaker 1>with cats where they really have to be tricked into

0:30:36.200 --> 0:30:38.920
<v Speaker 1>drinking water, but others will just drink it on the

0:30:38.920 --> 0:30:42.239
<v Speaker 1>fly out of toilets or dripping faucets and so forth. Right,

0:30:42.320 --> 0:30:45.160
<v Speaker 1>So all of that is direct water acquisitions. Of course,

0:30:45.160 --> 0:30:47.800
<v Speaker 1>you get water from drinking water. You get some smaller

0:30:47.800 --> 0:30:50.960
<v Speaker 1>amount of water from eating food that contains water. But

0:30:51.040 --> 0:30:55.040
<v Speaker 1>then apparently there's there's a secondary route for water acquisition

0:30:55.120 --> 0:30:59.600
<v Speaker 1>by eating food through what's known as metabolic water, which

0:30:59.680 --> 0:31:06.360
<v Speaker 1>is in your metabolism oxidizes various energy containing substances that

0:31:06.400 --> 0:31:10.080
<v Speaker 1>you eat and produces water in the process. So some

0:31:10.160 --> 0:31:15.120
<v Speaker 1>water is created at the molecular level by your metabolism,

0:31:15.160 --> 0:31:17.840
<v Speaker 1>and there are some organisms that get a large amount

0:31:17.880 --> 0:31:21.480
<v Speaker 1>of their their water content from metabolic water. Humans only

0:31:21.480 --> 0:31:24.560
<v Speaker 1>get a very small amount from it. But yeah, I

0:31:24.560 --> 0:31:27.400
<v Speaker 1>mean I think like some desert dwelling organisms and some

0:31:27.520 --> 0:31:31.680
<v Speaker 1>birds and stuff get get all or almost all of

0:31:31.720 --> 0:31:36.280
<v Speaker 1>their water by by chemical reactions that happen inside their

0:31:36.320 --> 0:31:38.840
<v Speaker 1>body after they eat food and turn parts of that

0:31:38.920 --> 0:31:41.880
<v Speaker 1>food into water molecules. Now, one of the interesting things

0:31:41.920 --> 0:31:44.520
<v Speaker 1>I was reading about some of these desert species um

0:31:44.600 --> 0:31:47.760
<v Speaker 1>and at least with some of them. You know, if

0:31:47.800 --> 0:31:51.880
<v Speaker 1>they're in a captivity and they are offered water, well,

0:31:51.960 --> 0:31:54.800
<v Speaker 1>then when they they theirst builds up, they will drink

0:31:54.840 --> 0:31:57.520
<v Speaker 1>the water. So it's not it's not like everything. I

0:31:57.520 --> 0:32:00.520
<v Speaker 1>don't want to imply that anything out there that gets

0:32:00.560 --> 0:32:02.240
<v Speaker 1>most of its water through its meat is going to

0:32:02.280 --> 0:32:04.400
<v Speaker 1>be like my cat and just refused to drink water.

0:32:04.520 --> 0:32:07.160
<v Speaker 1>You know, she has her own issues going on. Yeah,

0:32:07.200 --> 0:32:09.600
<v Speaker 1>I'm sure that varies by organism. Okay, but those are

0:32:09.640 --> 0:32:12.800
<v Speaker 1>the routes in you've got directly through drinking and eating

0:32:12.840 --> 0:32:15.400
<v Speaker 1>and then secondarily through metabolism. But then you've got a

0:32:15.440 --> 0:32:18.280
<v Speaker 1>number of routes for water to be to be eliminated,

0:32:18.320 --> 0:32:21.200
<v Speaker 1>So you've got urination of course, and then you've got

0:32:21.200 --> 0:32:25.640
<v Speaker 1>lost through defecation. You've got evaporation through the lungs of

0:32:25.680 --> 0:32:28.520
<v Speaker 1>people sometimes don't think about this, but you lose water

0:32:28.720 --> 0:32:31.360
<v Speaker 1>when you exhale water, vapor comes out of your mouth

0:32:32.120 --> 0:32:34.240
<v Speaker 1>or out of your nose, and then there is also

0:32:34.480 --> 0:32:37.720
<v Speaker 1>evaporative loss of water through the skins just through sweating,

0:32:37.920 --> 0:32:41.880
<v Speaker 1>so uh, and then other other more minor things. I mean,

0:32:41.880 --> 0:32:45.360
<v Speaker 1>obviously some extremely tiny amount of water evaporates off of

0:32:45.400 --> 0:32:48.080
<v Speaker 1>the liquid on the surface of your eyes and so forth,

0:32:48.120 --> 0:32:51.520
<v Speaker 1>but but those are the big ones. The defication is

0:32:51.520 --> 0:32:55.480
<v Speaker 1>worth mentioning, probably stressing again because I think most people

0:32:55.520 --> 0:32:57.600
<v Speaker 1>are probably familiar with this. But obviously if one is

0:32:57.640 --> 0:33:00.680
<v Speaker 1>in a UH, is suffering from a condition the results

0:33:00.760 --> 0:33:04.240
<v Speaker 1>in you know, um um diarrhea or um, you knows,

0:33:04.400 --> 0:33:07.440
<v Speaker 1>some sort of dysentery situation. You end up losing more

0:33:07.680 --> 0:33:10.960
<v Speaker 1>and more water through defecation, and therefore you have to

0:33:11.000 --> 0:33:13.479
<v Speaker 1>make sure you're drinking more and more water to make

0:33:13.560 --> 0:33:16.960
<v Speaker 1>up for that water loss. Also, just a reminder out

0:33:17.240 --> 0:33:20.080
<v Speaker 1>anyone out there, a well fitted and well manufactured still

0:33:20.080 --> 0:33:23.840
<v Speaker 1>suit will collect all of this as it leaves your body. UH.

0:33:24.160 --> 0:33:26.440
<v Speaker 1>All the routes out will be covered and you'll lose

0:33:26.520 --> 0:33:28.560
<v Speaker 1>no more than a thimble's worth of water per day.

0:33:28.720 --> 0:33:31.920
<v Speaker 1>We've gotta stress well fitted though. You get the still

0:33:31.920 --> 0:33:33.959
<v Speaker 1>suit on there, you're gonna have all kinds of gaps

0:33:33.960 --> 0:33:36.120
<v Speaker 1>and things not working right. That's right. You don't know

0:33:36.120 --> 0:33:37.800
<v Speaker 1>how to work the straps and you're not you don't

0:33:37.800 --> 0:33:40.880
<v Speaker 1>have that forehead piece on correctly. It's just not gonna

0:33:40.920 --> 0:33:50.480
<v Speaker 1>work um at an optimal level than right. Well, anyway,

0:33:50.520 --> 0:33:52.760
<v Speaker 1>I want to come back to some of the findings

0:33:52.800 --> 0:33:56.200
<v Speaker 1>that are summarized in that current biology paper by leave

0:33:56.280 --> 0:33:58.600
<v Speaker 1>at all that I mentioned earlier than again, this is

0:33:58.600 --> 0:34:02.440
<v Speaker 1>from so there will be more research that we get

0:34:02.480 --> 0:34:05.840
<v Speaker 1>into from after that adds to some of these findings.

0:34:05.840 --> 0:34:07.560
<v Speaker 1>But this is where we were when this when this

0:34:07.600 --> 0:34:10.480
<v Speaker 1>good summary came out. So in the human body, the

0:34:10.640 --> 0:34:16.800
<v Speaker 1>brain monitors the body's water content, and when certain thresholds

0:34:16.840 --> 0:34:21.360
<v Speaker 1>are reached in the that information monitoring system, it motivates

0:34:21.400 --> 0:34:24.960
<v Speaker 1>the body to drink fluids. Of course, it's not only

0:34:25.040 --> 0:34:28.520
<v Speaker 1>the decrease of fluid volume in the body that makes

0:34:28.560 --> 0:34:31.120
<v Speaker 1>us thirsty. One of the most important things to understand

0:34:31.160 --> 0:34:34.719
<v Speaker 1>in the maintenance of the body's water content is the

0:34:34.760 --> 0:34:38.680
<v Speaker 1>importance of something known as OSMO reality. That's O s

0:34:38.880 --> 0:34:42.120
<v Speaker 1>M O L A l I T Y. This is

0:34:42.160 --> 0:34:47.360
<v Speaker 1>the concentration of various particles such as electrolytes like sodium,

0:34:47.800 --> 0:34:51.959
<v Speaker 1>that are dissolved in the body's water content. And you'll

0:34:52.040 --> 0:34:55.680
<v Speaker 1>you'll see this often described as blood OSMO reality. It's

0:34:55.680 --> 0:34:59.680
<v Speaker 1>basically functionally the same thing. The liquid part of our

0:34:59.680 --> 0:35:03.879
<v Speaker 1>blood plasma is roughly water, So when people talk about

0:35:03.880 --> 0:35:06.839
<v Speaker 1>blood OSM reality, they're talking about OSM reality of the

0:35:06.880 --> 0:35:11.759
<v Speaker 1>body's water content. The brain is actually incredibly sensitive to

0:35:12.000 --> 0:35:16.160
<v Speaker 1>changes in blood OSM reality. An increase in just one

0:35:16.320 --> 0:35:20.120
<v Speaker 1>percent of of the blood osmality can cause an animal

0:35:20.160 --> 0:35:23.680
<v Speaker 1>to feel thirst and the author's right quote. This sensation,

0:35:23.719 --> 0:35:26.840
<v Speaker 1>in turn is sufficient to orient and energize all of

0:35:26.840 --> 0:35:31.600
<v Speaker 1>an animal's actions towards the goal of finding and consuming water. Thus,

0:35:31.640 --> 0:35:33.840
<v Speaker 1>the study of thirst is the study of how the

0:35:33.880 --> 0:35:38.920
<v Speaker 1>brain performs this remarkable transformation, such that small changes in

0:35:38.960 --> 0:35:42.879
<v Speaker 1>the composition of the blood become a potent and specific

0:35:43.040 --> 0:35:46.960
<v Speaker 1>motivational drive. Uh And and the more I thought about that,

0:35:47.000 --> 0:35:50.520
<v Speaker 1>the more interesting it became that essentially just sort of

0:35:50.640 --> 0:35:54.839
<v Speaker 1>eating a small amount of salt, for example, is enough

0:35:54.960 --> 0:35:58.840
<v Speaker 1>to to motivate my brain to change all of my

0:35:59.360 --> 0:36:04.440
<v Speaker 1>behavior because my osmolality goes up, the salt dissolved in

0:36:04.480 --> 0:36:08.239
<v Speaker 1>my body's water content increases. In order to balance that out,

0:36:08.360 --> 0:36:10.400
<v Speaker 1>my body wants me to go get some more water

0:36:10.520 --> 0:36:13.399
<v Speaker 1>to drink, and that I will interrupt whatever I'm doing

0:36:13.440 --> 0:36:15.239
<v Speaker 1>to go do it. And we and we did not

0:36:15.440 --> 0:36:18.120
<v Speaker 1>even really think about this. We don't think, oh, now

0:36:18.160 --> 0:36:20.160
<v Speaker 1>my body has need of water, I must go get it.

0:36:20.160 --> 0:36:22.680
<v Speaker 1>It's just like, it's just what you do. Yeah. Like

0:36:22.760 --> 0:36:24.719
<v Speaker 1>I mean, right here, as we're recording, and I have

0:36:24.920 --> 0:36:27.040
<v Speaker 1>a big thermis of water and I just end up

0:36:27.120 --> 0:36:29.600
<v Speaker 1>casually sipping on it the whole time. Yeah. Same here.

0:36:29.640 --> 0:36:31.399
<v Speaker 1>I always get a nice big glass of water before

0:36:31.440 --> 0:36:34.400
<v Speaker 1>we start recording. But but the question would be, why

0:36:34.520 --> 0:36:37.680
<v Speaker 1>are our bodies so sensitive to these tiny changes in

0:36:37.760 --> 0:36:42.400
<v Speaker 1>osmolality in the amount of of osmolites dissolved in the blood.

0:36:42.680 --> 0:36:47.120
<v Speaker 1>Why would like a one percent increase in salt concentration

0:36:47.560 --> 0:36:50.960
<v Speaker 1>really cause that much of a problem. Well, the authors

0:36:51.080 --> 0:36:54.399
<v Speaker 1>offer some explanations. They say, first of all, you've got

0:36:54.400 --> 0:36:57.600
<v Speaker 1>this thing in your body known as the electrochemical gradient.

0:36:58.280 --> 0:37:04.279
<v Speaker 1>The cells in our bodies are selectively permeable to specific ions.

0:37:04.880 --> 0:37:09.400
<v Speaker 1>Quote resulting in an electrochemical gradient across the plasma membrane

0:37:09.880 --> 0:37:14.680
<v Speaker 1>that is exploited for numerous cellular functions. So this means

0:37:14.840 --> 0:37:17.680
<v Speaker 1>that there's a difference in the electrical charge and the

0:37:17.719 --> 0:37:22.040
<v Speaker 1>concentration of various chemicals on opposite sides of the membrane

0:37:22.120 --> 0:37:25.600
<v Speaker 1>that surrounds each of our cells, and the difference or

0:37:25.640 --> 0:37:28.279
<v Speaker 1>the gradient here, the fact that it's different on each

0:37:28.360 --> 0:37:32.360
<v Speaker 1>side of the membrane is what permits the transportation of

0:37:32.440 --> 0:37:36.360
<v Speaker 1>ions across the membrane so that cells can do things,

0:37:36.400 --> 0:37:38.680
<v Speaker 1>so that they can send and receive things. So if

0:37:38.719 --> 0:37:42.879
<v Speaker 1>you change your blood osmolality, you say, increase the concentration

0:37:42.920 --> 0:37:46.880
<v Speaker 1>of salt in the body's water content, You change this gradient,

0:37:47.440 --> 0:37:51.360
<v Speaker 1>and you change the water contents inside cells, and you

0:37:51.440 --> 0:37:55.160
<v Speaker 1>quote degrade normal cellular function. Now, I was trying to

0:37:55.160 --> 0:37:57.239
<v Speaker 1>think of a rough analogy, and here's what I came

0:37:57.320 --> 0:37:59.440
<v Speaker 1>up with. This may be very rough, but it's my

0:37:59.440 --> 0:38:03.240
<v Speaker 1>best attempt. So when you change your blood osmolality away

0:38:03.280 --> 0:38:06.200
<v Speaker 1>from its ideal, I would say your body sort of

0:38:06.239 --> 0:38:10.799
<v Speaker 1>becomes like a city that starts having system wide problems

0:38:10.880 --> 0:38:16.120
<v Speaker 1>opening and closing doors. Now, is the problems opening and

0:38:16.160 --> 0:38:20.360
<v Speaker 1>closing doors of all kinds throughout a city get worse. Eventually,

0:38:20.400 --> 0:38:24.759
<v Speaker 1>this would just cause myriad diverse problems throughout the city. Uh,

0:38:24.880 --> 0:38:27.040
<v Speaker 1>much like it would in your body. Well that did

0:38:27.120 --> 0:38:29.000
<v Speaker 1>that just sounds like chaos. That just sounds like like

0:38:29.680 --> 0:38:32.359
<v Speaker 1>all order is falling out out the window, right. And

0:38:32.440 --> 0:38:36.080
<v Speaker 1>you can actually see that the represent visual representation of

0:38:36.120 --> 0:38:38.520
<v Speaker 1>that chaos in a chart that the authors include in

0:38:38.520 --> 0:38:42.960
<v Speaker 1>their paper, where it shows what the typical symptoms are

0:38:43.000 --> 0:38:47.080
<v Speaker 1>as the blood osmolality goes too far above or below

0:38:47.239 --> 0:38:50.799
<v Speaker 1>what it's supposed to be. Uh and uh. Basically on

0:38:50.840 --> 0:38:52.799
<v Speaker 1>both sides, it's sort of a mirror image with a

0:38:52.840 --> 0:38:55.480
<v Speaker 1>few differences. So you've got the normal range, but then

0:38:55.520 --> 0:39:00.520
<v Speaker 1>you start getting away from it, you get things like irritability, lethargy, aussia,

0:39:01.080 --> 0:39:05.200
<v Speaker 1>a taxia, trembling, hypothermia, and then in both cases you

0:39:05.280 --> 0:39:08.719
<v Speaker 1>end up in the seizures and death territory. So yeah,

0:39:08.760 --> 0:39:12.520
<v Speaker 1>so basically, yeah, we have this this thin little realm

0:39:12.840 --> 0:39:17.520
<v Speaker 1>of stability and to either extreme it's just madness and death. Right,

0:39:17.560 --> 0:39:21.280
<v Speaker 1>So the body has to very carefully keep that concentration

0:39:21.400 --> 0:39:24.440
<v Speaker 1>of osma lights in the right range, and if it

0:39:24.480 --> 0:39:27.560
<v Speaker 1>gets off there, there are it will take drastic measures

0:39:27.600 --> 0:39:30.720
<v Speaker 1>to get it right again. But then the authors identify

0:39:30.760 --> 0:39:33.600
<v Speaker 1>another major reason that the body has to keep fluid

0:39:34.200 --> 0:39:38.320
<v Speaker 1>volume and osmalality at the right levels, which is blood pressure.

0:39:38.480 --> 0:39:41.200
<v Speaker 1>You know, they say, your body uses blood to transport

0:39:41.239 --> 0:39:44.200
<v Speaker 1>oxygen and other essential nutrients to all of its tissues.

0:39:44.239 --> 0:39:46.920
<v Speaker 1>Everything in the body needs to get oxygen, uh that,

0:39:47.040 --> 0:39:49.360
<v Speaker 1>you know, from the lungs in the heart, and the

0:39:49.440 --> 0:39:52.919
<v Speaker 1>blood has to get there to do its work. If

0:39:52.960 --> 0:39:57.680
<v Speaker 1>the volume of water in the body drops below ideal levels,

0:39:58.120 --> 0:40:02.759
<v Speaker 1>blood volume actually decre recess. There's not enough blood, which

0:40:02.800 --> 0:40:05.760
<v Speaker 1>means the circulatory system has to work harder and harder

0:40:05.800 --> 0:40:08.279
<v Speaker 1>to keep blood pressure up where it needs to be

0:40:08.520 --> 0:40:10.279
<v Speaker 1>to get to all the parts of the body and

0:40:10.320 --> 0:40:14.120
<v Speaker 1>deliver those nutrients. So, in addition to maintaining the right

0:40:14.160 --> 0:40:18.239
<v Speaker 1>concentration of those dissolved things like sodium, you also just

0:40:18.600 --> 0:40:21.359
<v Speaker 1>need to have enough water in your body to keep

0:40:21.400 --> 0:40:23.600
<v Speaker 1>your blood pressure up to allow your heart to keep

0:40:23.640 --> 0:40:26.239
<v Speaker 1>getting blood to all the parts of the body. It

0:40:26.320 --> 0:40:27.520
<v Speaker 1>just it kind of comes back to what you said

0:40:27.520 --> 0:40:29.880
<v Speaker 1>earlier about it. You know that we're there's water bags,

0:40:29.960 --> 0:40:33.080
<v Speaker 1>we're creatures made out of water, and if we don't

0:40:33.080 --> 0:40:36.360
<v Speaker 1>have enough water, we don't have enough of us, right, Yeah,

0:40:36.520 --> 0:40:40.200
<v Speaker 1>nothing nothing works without it anyway. The authors say that

0:40:40.280 --> 0:40:44.040
<v Speaker 1>the bodies of animals have evolved to carefully preserve blood

0:40:44.120 --> 0:40:47.279
<v Speaker 1>volume and blood osmality, and then they describe some of

0:40:47.320 --> 0:40:50.600
<v Speaker 1>the main components of this system that we know about. So,

0:40:50.680 --> 0:40:55.160
<v Speaker 1>first of all, there are neurons that monitor blood osmalality

0:40:55.160 --> 0:40:58.960
<v Speaker 1>and volume. You've got especially dedicated cells in the central

0:40:58.960 --> 0:41:02.600
<v Speaker 1>nervous system that pay attention to this stuff, and when

0:41:02.640 --> 0:41:06.160
<v Speaker 1>they detect a problem, they quote trigger a coordinated set

0:41:06.200 --> 0:41:11.080
<v Speaker 1>of autonomic, neuroendocrine, and behavioral responses that defend these parameters

0:41:11.120 --> 0:41:14.560
<v Speaker 1>against change. So one of the main measures the body

0:41:14.560 --> 0:41:17.400
<v Speaker 1>can take to defend against changes in OSM reality is

0:41:17.560 --> 0:41:22.200
<v Speaker 1>modulating kidney function. So as OSM reality increases, you get

0:41:22.200 --> 0:41:25.840
<v Speaker 1>a surge of anti diuretic hormone, which makes the kidneys

0:41:26.040 --> 0:41:29.879
<v Speaker 1>change tack to keep more water inside the body and

0:41:30.040 --> 0:41:33.560
<v Speaker 1>make the urine more highly concentrated, make it less deluded

0:41:33.560 --> 0:41:36.359
<v Speaker 1>with water. Of course, the kidneys can't do their job

0:41:36.400 --> 0:41:39.920
<v Speaker 1>alone because they also have to do other things. In

0:41:40.000 --> 0:41:42.120
<v Speaker 1>addition to that, they have to help purge the body

0:41:42.160 --> 0:41:46.360
<v Speaker 1>of toxic substances and other kinds of waste and of course,

0:41:46.400 --> 0:41:50.880
<v Speaker 1>some some water volume will necessarily be lost in that process. Also,

0:41:50.960 --> 0:41:53.800
<v Speaker 1>the body loses water through these other means we mentioned

0:41:53.840 --> 0:41:56.800
<v Speaker 1>a minute ago, sweating, breathing, and so forth, So eventually

0:41:56.840 --> 0:41:59.400
<v Speaker 1>the body will be forced to consume new water to

0:41:59.440 --> 0:42:02.239
<v Speaker 1>restore the balance and the volume of the blood plasma.

0:42:03.160 --> 0:42:06.560
<v Speaker 1>So so that's the chemistry and the physiology. But eventually

0:42:06.600 --> 0:42:08.719
<v Speaker 1>you have to get to behavior. At some point, the

0:42:08.760 --> 0:42:12.200
<v Speaker 1>brain has to trigger behaviors to get new water in

0:42:12.920 --> 0:42:16.720
<v Speaker 1>so an animal thinks I need to drink water. Of course,

0:42:16.760 --> 0:42:19.640
<v Speaker 1>this behavior can be costly there you know, there are

0:42:19.640 --> 0:42:23.600
<v Speaker 1>factors working against an animal's motivation to do it because

0:42:24.000 --> 0:42:27.600
<v Speaker 1>it might involve spending energy finding and traveling to a

0:42:27.640 --> 0:42:31.160
<v Speaker 1>water source. It might involve taking big risks. I mean,

0:42:31.200 --> 0:42:34.080
<v Speaker 1>think of all the nature documentaries you've seen where predation

0:42:34.200 --> 0:42:37.400
<v Speaker 1>happens at the water's edge, whether it's a crocodile jumping

0:42:37.400 --> 0:42:39.680
<v Speaker 1>out of the water or a predator sneaking up while

0:42:39.719 --> 0:42:43.359
<v Speaker 1>an animal is distracted by lapping up water. And then

0:42:43.400 --> 0:42:46.280
<v Speaker 1>some of those predators have been traditionally been human beings.

0:42:46.480 --> 0:42:50.600
<v Speaker 1>Oh totally. And of course drinking water just involves temporarily

0:42:50.880 --> 0:42:53.920
<v Speaker 1>de prioritizing other important things. Like you know, in the

0:42:54.000 --> 0:42:57.640
<v Speaker 1>natural context, maybe forging for food or pursuing reproduction, but

0:42:57.680 --> 0:42:59.799
<v Speaker 1>even think you know, it might force you to get

0:42:59.840 --> 0:43:03.759
<v Speaker 1>up from gaming or whatever. Well, I mean, this is

0:43:03.800 --> 0:43:06.879
<v Speaker 1>one of those areas again where like with humans, so

0:43:06.920 --> 0:43:09.160
<v Speaker 1>many of us are are are fortunate that we never

0:43:09.200 --> 0:43:12.360
<v Speaker 1>have to hunt for water. You know, the drinking water

0:43:12.520 --> 0:43:15.680
<v Speaker 1>is readily available to us. We have all that we need.

0:43:16.239 --> 0:43:20.839
<v Speaker 1>And likewise, through human civilization we we tend to have

0:43:20.920 --> 0:43:25.520
<v Speaker 1>the food situation knocked as well. Again, and ideal circumstances,

0:43:25.680 --> 0:43:28.920
<v Speaker 1>you're not going to have to spend um most of

0:43:29.000 --> 0:43:31.399
<v Speaker 1>your day foraging for food, which is going to be

0:43:31.600 --> 0:43:35.000
<v Speaker 1>the case with many different species of animals, you know,

0:43:35.040 --> 0:43:37.440
<v Speaker 1>where most of the day is about just finding the food,

0:43:37.520 --> 0:43:39.440
<v Speaker 1>eating the food, and of course there's no there's no

0:43:39.520 --> 0:43:41.520
<v Speaker 1>room for anything else. And if you're having to hunt

0:43:41.560 --> 0:43:44.399
<v Speaker 1>for extra water along the way, then you're that's getting

0:43:44.400 --> 0:43:48.120
<v Speaker 1>in the way potentially of this this vital food hunt. Yeah,

0:43:48.400 --> 0:43:53.280
<v Speaker 1>just as an aside, easy access to clean, drinkable running

0:43:53.320 --> 0:43:56.239
<v Speaker 1>water is like my go to example of what's good

0:43:56.280 --> 0:43:58.440
<v Speaker 1>about modern civilization. You know, there are a lot of

0:43:58.440 --> 0:44:00.960
<v Speaker 1>people who kind of demonize modern civilization, and there are

0:44:00.960 --> 0:44:03.000
<v Speaker 1>a lot of things about it not to like. But

0:44:03.360 --> 0:44:06.400
<v Speaker 1>but easy access to clean water is like, that is

0:44:06.560 --> 0:44:10.080
<v Speaker 1>the most unambiguous good thing I can think of, right,

0:44:10.160 --> 0:44:12.319
<v Speaker 1>I mean, to the to the to the extent that

0:44:12.400 --> 0:44:15.720
<v Speaker 1>it's ridiculous in some in many cases you know where

0:44:16.080 --> 0:44:19.279
<v Speaker 1>someone might ask, what what is this? What is this

0:44:19.360 --> 0:44:22.000
<v Speaker 1>water in your toilet? Well, this is drinking water, the

0:44:22.239 --> 0:44:24.480
<v Speaker 1>drinking water that comes into the house, he goes into

0:44:24.480 --> 0:44:26.680
<v Speaker 1>the toilet. We just make sure that the water in

0:44:26.760 --> 0:44:30.959
<v Speaker 1>there it's perfectly fresh and drinkable. Um, which I guess

0:44:31.000 --> 0:44:33.120
<v Speaker 1>is good for the dogs and the cats. But um,

0:44:33.880 --> 0:44:36.640
<v Speaker 1>you know certainly that I think you see these various

0:44:36.680 --> 0:44:39.480
<v Speaker 1>you know, gray water models, Um, that certainly make a

0:44:39.480 --> 0:44:41.440
<v Speaker 1>lot more sense, Like why should the drinking water be

0:44:41.520 --> 0:44:44.360
<v Speaker 1>the water in the toilet. Can't the water from the

0:44:44.400 --> 0:44:46.200
<v Speaker 1>washing of my hands be the water in the toilet?

0:44:46.239 --> 0:44:49.919
<v Speaker 1>Wouldn't that make more sense? Of course it requires more work, right,

0:44:49.960 --> 0:44:52.920
<v Speaker 1>But to come back to the the wild context, I mean,

0:44:52.920 --> 0:44:56.120
<v Speaker 1>obviously there are all these things that would be factors

0:44:56.400 --> 0:45:00.479
<v Speaker 1>pushing against your your acquisition of water, and your body

0:45:00.520 --> 0:45:03.880
<v Speaker 1>needs it. So of course what an animal needs is

0:45:03.960 --> 0:45:08.480
<v Speaker 1>intrinsic motivation. Actually, they're demotivating factors that are just natural

0:45:08.560 --> 0:45:12.360
<v Speaker 1>parts of the environment. So acquiring water needs its own

0:45:12.440 --> 0:45:16.440
<v Speaker 1>intrinsic motivation, hence the motivating desire of thirst. It is

0:45:16.480 --> 0:45:20.960
<v Speaker 1>a moment to moment drive to acquire water that's calibrated

0:45:21.000 --> 0:45:25.480
<v Speaker 1>by the constantly updated feedback on blood volume and osmality,

0:45:25.560 --> 0:45:28.600
<v Speaker 1>though there may also be some other interesting and more

0:45:28.640 --> 0:45:30.799
<v Speaker 1>surprising inputs on it that will get to in a

0:45:30.800 --> 0:45:33.600
<v Speaker 1>bit now. The authors point out that thirst appears to

0:45:33.640 --> 0:45:37.799
<v Speaker 1>have both positive and negative motivating mechanisms, and I think

0:45:37.840 --> 0:45:40.560
<v Speaker 1>you can think about food, food and hunger as an

0:45:40.600 --> 0:45:44.680
<v Speaker 1>analogy here, because there's something sort of along the same line.

0:45:44.719 --> 0:45:48.920
<v Speaker 1>So you've got positive reinforcement of fluid drinking behavior by

0:45:49.040 --> 0:45:52.600
<v Speaker 1>just making drinking water when you're thirsty feel really good,

0:45:52.719 --> 0:45:55.000
<v Speaker 1>you know, when you're very thirsty, that glass of water,

0:45:55.200 --> 0:45:58.719
<v Speaker 1>it's it's delicious, it's wonderful, it feels great. And then

0:45:58.800 --> 0:46:00.960
<v Speaker 1>you've got the negative reinforce smith side, which is that

0:46:01.040 --> 0:46:04.720
<v Speaker 1>thirst is inherently unpleasant. It is experienced as a type

0:46:04.840 --> 0:46:09.000
<v Speaker 1>of discomfort or pain that has to be alleviated by

0:46:09.120 --> 0:46:12.600
<v Speaker 1>drinking fluid. So we all know from experience that these

0:46:12.600 --> 0:46:15.120
<v Speaker 1>things are true. That you have this positive and negative

0:46:15.160 --> 0:46:19.160
<v Speaker 1>reinforcement mechanism within the brain for thirst and the drinking

0:46:19.160 --> 0:46:22.680
<v Speaker 1>of water. But what's very interesting is that, at least

0:46:22.680 --> 0:46:25.680
<v Speaker 1>at the time of this paper in two sixteen, how

0:46:25.760 --> 0:46:28.680
<v Speaker 1>these two mechanisms of thirst are instantiated in the brain

0:46:29.080 --> 0:46:32.720
<v Speaker 1>is still not fully understood. There are some major question

0:46:32.760 --> 0:46:35.239
<v Speaker 1>marks remaining, and I think there are at least a

0:46:35.239 --> 0:46:37.800
<v Speaker 1>few other studies that we can refer to in subsequent

0:46:37.880 --> 0:46:41.640
<v Speaker 1>parts of the series about that where where some ideas

0:46:41.640 --> 0:46:44.000
<v Speaker 1>have developed since then, but there's still a lot of

0:46:44.080 --> 0:46:47.400
<v Speaker 1>questions out there, and this is This is one of

0:46:47.400 --> 0:46:49.440
<v Speaker 1>the reasons that I thought it would be so interesting

0:46:49.480 --> 0:46:52.920
<v Speaker 1>to pursue Thirst as a series on the show, because

0:46:53.000 --> 0:46:55.880
<v Speaker 1>it's surprising that there are things we still don't know

0:46:55.920 --> 0:46:57.480
<v Speaker 1>about it. It seems like one of those things that

0:46:57.520 --> 0:47:01.279
<v Speaker 1>would be absolutely totally understood at this point. But but

0:47:01.360 --> 0:47:04.520
<v Speaker 1>there's some great outlining questions about thirst and and UH,

0:47:05.000 --> 0:47:08.799
<v Speaker 1>how we experience thirst, what are the neural pathways there,

0:47:08.840 --> 0:47:12.040
<v Speaker 1>how is thirst SAYD and so forth, So maybe we'll

0:47:12.040 --> 0:47:13.880
<v Speaker 1>have to call it for this first part here. I

0:47:13.880 --> 0:47:16.760
<v Speaker 1>know I'm only halfway through discussing this uh from repaper,

0:47:16.800 --> 0:47:18.200
<v Speaker 1>but if we go on through the end of this

0:47:18.239 --> 0:47:20.359
<v Speaker 1>one this first episode is going to be two hours

0:47:20.400 --> 0:47:22.920
<v Speaker 1>long or something, so so maybe we should call it

0:47:22.960 --> 0:47:25.480
<v Speaker 1>What do you think, Rob? I think so, yeah, I'm

0:47:25.520 --> 0:47:28.120
<v Speaker 1>actually almost out of water here and I'm going to

0:47:28.200 --> 0:47:30.520
<v Speaker 1>have to refill. But yeah, I'm excited to keep going

0:47:30.520 --> 0:47:32.480
<v Speaker 1>with this. There are a number of little areas I'm

0:47:32.520 --> 0:47:35.839
<v Speaker 1>hoping we'll get into the manipulation of thirst by other

0:47:36.000 --> 0:47:40.840
<v Speaker 1>organisms the end and life forms the I want to

0:47:40.840 --> 0:47:43.520
<v Speaker 1>get back to the taste of water. Uh, this is

0:47:43.560 --> 0:47:48.040
<v Speaker 1>something that's always fascinated me. I'm granted water, the taste

0:47:48.080 --> 0:47:50.160
<v Speaker 1>of of of water will change depending on where you're

0:47:50.160 --> 0:47:52.200
<v Speaker 1>getting the water. But you'll sometimes hear people say, well,

0:47:52.200 --> 0:47:54.600
<v Speaker 1>I don't like the taste of water, or we'll think

0:47:54.640 --> 0:47:57.640
<v Speaker 1>of water as having no taste at all. Um. I

0:47:57.680 --> 0:48:00.840
<v Speaker 1>actually found some some some some papers dealing with this

0:48:00.920 --> 0:48:02.560
<v Speaker 1>topic a little bit, so I think they could be

0:48:02.560 --> 0:48:05.360
<v Speaker 1>fun to discuss. People who don't like the taste of water.

0:48:05.600 --> 0:48:10.839
<v Speaker 1>That is a telltale sign of vampororism. Just add some

0:48:10.880 --> 0:48:13.520
<v Speaker 1>red food coloring to it. Then then you're then you're like, oh,

0:48:13.560 --> 0:48:16.560
<v Speaker 1>this is great, this is wonderful. Okay, well, all veins

0:48:16.640 --> 0:48:20.560
<v Speaker 1>to drink from when we return, All right, in the meantime,

0:48:20.600 --> 0:48:22.279
<v Speaker 1>if you want to check out other episodes of Stuff

0:48:22.320 --> 0:48:24.000
<v Speaker 1>to Blow Your Mind, you'll find them in the Stuff

0:48:24.040 --> 0:48:26.759
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0:48:26.840 --> 0:48:31.120
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0:48:31.160 --> 0:48:33.160
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0:48:33.160 --> 0:48:35.240
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0:48:35.239 --> 0:48:38.759
<v Speaker 1>matters and just discuss a weird film. Huge thanks as

0:48:38.760 --> 0:48:42.319
<v Speaker 1>always to our excellent audio producer Seth Nicholas Johnson. If

0:48:42.320 --> 0:48:43.920
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0:48:44.040 --> 0:48:46.480
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0:48:46.520 --> 0:48:48.560
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0:48:48.600 --> 0:48:51.640
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0:48:51.640 --> 0:49:02.120
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0:49:02.160 --> 0:49:04.920
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