WEBVTT 00:00:00.000 --> 00:00:03.060 Welcome to today's deep dive. We are looking 00:00:03.060 --> 00:00:06.820 at a topic today that completely upends a very 00:00:06.820 --> 00:00:10.160 deeply held assumption about how the world works. 00:00:10.380 --> 00:00:12.500 It really does. It flips the whole script. Right. 00:00:12.779 --> 00:00:15.480 Because we humans tend to look at our complex 00:00:15.480 --> 00:00:18.579 economic systems, our use of currency, long term 00:00:18.579 --> 00:00:22.660 social contracts, and even transactional sex. 00:00:22.719 --> 00:00:25.000 And we categorize all of that as uniquely human. 00:00:25.179 --> 00:00:27.219 Exactly. We just assume that these behaviors 00:00:27.219 --> 00:00:31.460 are this byproduct of modern civilization. But 00:00:31.460 --> 00:00:33.799 the sources we're digging into today tell a very 00:00:33.799 --> 00:00:36.420 different story. A much older story. Yeah. We 00:00:36.420 --> 00:00:38.020 are pulling from a fascinating collection of 00:00:38.020 --> 00:00:39.520 research today. It's actually centered around 00:00:39.520 --> 00:00:42.460 a Wikipedia article titled, Prostitution Among 00:00:42.460 --> 00:00:44.899 Animals. Which is quite the title. I know, right? 00:00:45.359 --> 00:00:47.579 But the goal today is to look at how non -human 00:00:47.579 --> 00:00:50.420 animals use physical resources, how they establish 00:00:50.420 --> 00:00:54.600 long -term social contracts, and even adopt artificial 00:00:54.600 --> 00:00:56.979 money. just to navigate meeting and survival. 00:00:57.380 --> 00:00:59.259 Exactly. And for you listening, we're going to 00:00:59.259 --> 00:01:01.719 unpack all of this. Because the biological and 00:01:01.719 --> 00:01:04.140 evolutionary realities beneath that sensational 00:01:04.140 --> 00:01:06.920 title are actually profound. Yeah, it's not just 00:01:06.920 --> 00:01:10.010 shock value. No, not at all. When we look closely 00:01:10.010 --> 00:01:12.090 at these behaviors, we aren't just observing 00:01:12.090 --> 00:01:15.909 random quirks of nature. We are looking at deeply 00:01:15.909 --> 00:01:18.810 ingrained evolutionary strategies. Hard -wired 00:01:18.810 --> 00:01:22.010 survival tactics. Right. And today, we're going 00:01:22.010 --> 00:01:24.689 to examine three distinct environments. We've 00:01:24.689 --> 00:01:27.590 got the Antarctic ice, the jungle, and a sterile 00:01:27.590 --> 00:01:30.409 laboratory. Quite the tour. It is. And we're 00:01:30.409 --> 00:01:33.670 doing this to understand the biological and cognitive 00:01:33.670 --> 00:01:36.230 mechanisms that drive what we can really only 00:01:36.230 --> 00:01:40.159 describe as, well, animal Okay, let's untag this. 00:01:40.420 --> 00:01:42.379 We are starting our journey at the bottom of 00:01:42.379 --> 00:01:45.719 the world, specifically Ross Island. A very harsh 00:01:45.719 --> 00:01:47.980 place. Oh, incredibly harsh. It's located about 00:01:47.980 --> 00:01:50.459 800 miles from the South Pole, part of an Antarctica 00:01:50.459 --> 00:01:53.079 -New Zealand program. It's an incredibly unforgiving 00:01:53.079 --> 00:01:55.159 landscape. You really can't overstate that. And 00:01:55.159 --> 00:01:57.939 it was there that researchers, Fiona Hunter from 00:01:57.939 --> 00:01:59.939 the University of Cambridge alongside Lloyd Davis 00:01:59.939 --> 00:02:02.599 from the University of Otago, they spent five 00:02:02.599 --> 00:02:05.640 long years there. Just observing. Yeah, five 00:02:05.640 --> 00:02:08.379 years observing the mating behaviors of Adelie 00:02:08.379 --> 00:02:11.419 penguins. They were meticulously tracking how 00:02:11.419 --> 00:02:14.479 these birds interact, how they mate, and most 00:02:14.479 --> 00:02:16.780 importantly, how they survive the elements. I 00:02:16.780 --> 00:02:18.919 mean, five years of standing out in the Antarctic 00:02:18.919 --> 00:02:22.379 chill, taking notes on penguin society is serious 00:02:22.379 --> 00:02:24.960 dedication. It's rigorous science. It really 00:02:24.960 --> 00:02:28.319 is. And the resulting 1998 paper outlined some 00:02:28.319 --> 00:02:31.939 mind blowing mechanics. The paper is titled Female 00:02:31.939 --> 00:02:35.919 Adelie Penguins. acquire nest material from extra 00:02:35.919 --> 00:02:39.360 pair males after engaging in extra pair copulations. 00:02:39.659 --> 00:02:42.439 A very literal title. Very literal. And to clarify 00:02:42.439 --> 00:02:44.900 for you listening, extra pair copulations simply 00:02:44.900 --> 00:02:46.800 means penguins stepping outside of their primary 00:02:46.800 --> 00:02:49.740 mating partnership. Right. But the physical transaction 00:02:49.740 --> 00:02:52.340 that accompanies this behavior revolves entirely 00:02:52.340 --> 00:02:55.060 around one thing, stones. Which makes perfect 00:02:55.060 --> 00:02:57.379 sense when you understand the ecosystem. In that 00:02:57.379 --> 00:02:59.719 specific environment, stones are the ultimate 00:02:59.719 --> 00:03:01.930 commodity. They are everything. They really are. 00:03:01.949 --> 00:03:04.229 You cannot build a secure nest on the ice without 00:03:04.229 --> 00:03:07.110 them. That makes them a highly valuable, tangible 00:03:07.110 --> 00:03:09.129 asset. They're essentially money. They function 00:03:09.129 --> 00:03:11.750 as a natural currency. Without a stone -lined 00:03:11.750 --> 00:03:14.229 nest, your eggs are exposed to freezing meltwater. 00:03:14.430 --> 00:03:17.530 And predators. Exactly. So the drive to acquire 00:03:17.530 --> 00:03:21.150 these stones is inextricably linked to reproductive 00:03:21.150 --> 00:03:23.590 success. Now the researchers actually documented 00:03:23.590 --> 00:03:26.550 a strict set of geographic rules governing how 00:03:26.550 --> 00:03:29.030 this stone currency is exchanged. It's wild. 00:03:29.189 --> 00:03:31.349 It's very structured. Yeah. According to the 00:03:31.349 --> 00:03:33.650 study, if this extra pair copulation happens 00:03:33.650 --> 00:03:36.150 over at the male penguin's nesting site, the 00:03:36.150 --> 00:03:38.409 female will take one or more stones from his 00:03:38.409 --> 00:03:40.990 site to go build her own nest. Right, she takes 00:03:40.990 --> 00:03:43.710 the payment. But if the compilation happens at 00:03:43.710 --> 00:03:46.969 the female's nesting site, the male leaves empty 00:03:46.969 --> 00:03:50.370 -handed. He takes nothing. Which forces us to 00:03:50.370 --> 00:03:52.750 look at the biological why. Why would he agree 00:03:52.750 --> 00:03:56.150 to that? Exactly. Why would a male allow a female 00:03:56.150 --> 00:03:58.669 to take a vital survival resource from his own 00:03:58.669 --> 00:04:00.509 nest? Especially when they're so hard to come 00:04:00.509 --> 00:04:03.610 by. Well, in evolutionary biology, behaviors 00:04:03.610 --> 00:04:05.509 are almost always driven by genetic fitness. 00:04:05.949 --> 00:04:08.050 It's the imperative to pass on your genes. So 00:04:08.050 --> 00:04:11.099 he's making an investment. Precisely. If the 00:04:11.099 --> 00:04:13.060 male has just copulated with this female and 00:04:13.060 --> 00:04:15.139 she takes his stone to build a stronger nest, 00:04:15.819 --> 00:04:18.160 he's directly investing in the infrastructure 00:04:18.160 --> 00:04:20.939 that might house his own progeny. But wait, if 00:04:20.939 --> 00:04:23.740 she just steals the stone and runs away, why 00:04:23.740 --> 00:04:26.040 does the male even let her near the nest in the 00:04:26.040 --> 00:04:29.079 first place? Ah, that's the catch. Because the 00:04:29.079 --> 00:04:31.160 researchers noted this is not always a polite 00:04:31.160 --> 00:04:34.480 reciprocal transaction. Sometimes the females 00:04:34.480 --> 00:04:36.660 don't even copulate with the males at all. They 00:04:36.660 --> 00:04:38.879 just take the money and run. Literally. They 00:04:38.879 --> 00:04:41.680 just wander over, grab the stones, and bolt. 00:04:41.959 --> 00:04:44.279 Both males and females are out there stealing 00:04:44.279 --> 00:04:47.040 stones. Because the environment is so competitive. 00:04:47.639 --> 00:04:50.040 A male has to let females approach if he wants 00:04:50.040 --> 00:04:52.540 any chance of extra pair mating. He has to open 00:04:52.540 --> 00:04:55.040 the shop door, so to speak. Right. Which leaves 00:04:55.040 --> 00:04:57.699 him vulnerable to theft. Sometimes the females 00:04:57.699 --> 00:05:00.060 get away with it, and other times they are caught 00:05:00.060 --> 00:05:02.199 and violently attacked. It's a high -risk resource 00:05:02.199 --> 00:05:04.800 market. Very high -risk. The male is essentially 00:05:04.800 --> 00:05:07.600 taking a calculated gamble every time a female 00:05:07.600 --> 00:05:09.920 approaches his territory. And the deception goes 00:05:09.920 --> 00:05:13.079 even deeper. The study observed that some female 00:05:13.079 --> 00:05:15.759 penguins will fake a willingness to copulate 00:05:15.759 --> 00:05:18.459 purely to avoid getting into a physical fight. 00:05:18.860 --> 00:05:22.620 Just to secure a stone. Yes. They engage in the 00:05:22.620 --> 00:05:25.379 preliminary courtship behaviors just long enough 00:05:25.379 --> 00:05:28.459 to lower the male's defenses, grab the rock, 00:05:28.800 --> 00:05:31.480 and run. What's fascinating here is how Fiona 00:05:31.480 --> 00:05:35.300 Hunter interpreted this complex web of deception 00:05:35.300 --> 00:05:37.560 and transaction. She had a very specific take 00:05:37.560 --> 00:05:39.800 on it. She did. She pointed out that we shouldn't 00:05:39.800 --> 00:05:42.439 reduce this to a simple one -to -one economy 00:05:42.439 --> 00:05:45.920 where a rock equals a sexual favor. She explicitly 00:05:45.920 --> 00:05:48.339 stated that these female penguins probably aren't 00:05:48.339 --> 00:05:50.879 engaging in this behavior solely for the stones. 00:05:51.019 --> 00:05:53.560 I found her quote on this incredibly revealing. 00:05:53.720 --> 00:05:55.899 What did she say? She said, quote, What they 00:05:55.899 --> 00:05:58.240 are doing is having copulation for another reason 00:05:58.240 --> 00:06:00.959 and just taking the stones as well. We do not 00:06:00.959 --> 00:06:03.259 know exactly why, but they're using the males. 00:06:03.620 --> 00:06:06.480 That is a crucial observation. So what is the 00:06:06.480 --> 00:06:08.920 alternative goal here, if not just building materials? 00:06:09.300 --> 00:06:11.519 This brings us to the mate choice hypothesis. 00:06:11.879 --> 00:06:15.019 The idea is that these female penguins are essentially 00:06:15.019 --> 00:06:17.000 window shopping. Window shopping for partners. 00:06:17.420 --> 00:06:19.759 Exactly. In the harsh environment of Ross Island, 00:06:20.100 --> 00:06:22.980 mortality rates are high. A female penguin needs 00:06:22.980 --> 00:06:25.339 an insurance policy. Because her primary mate 00:06:25.339 --> 00:06:28.360 might not make it. Right. By engaging with these 00:06:28.360 --> 00:06:31.220 extra pair males, she is assessing potential 00:06:31.220 --> 00:06:34.000 future partners just in case her current mate 00:06:34.000 --> 00:06:36.720 doesn't survive the season. So the stones are 00:06:36.720 --> 00:06:38.800 just a perk. The stones she takes are essentially 00:06:38.800 --> 00:06:41.860 a bonus, a fringe benefit of scouting a backup 00:06:41.860 --> 00:06:46.180 mate. Multitasking survival strategies. But based 00:06:46.180 --> 00:06:48.060 on Hunter's data, I should point out for the 00:06:48.060 --> 00:06:50.920 listener, this is not a widespread societal norm 00:06:50.920 --> 00:06:53.339 for the penguins. No, it's a minority behavior. 00:06:53.439 --> 00:06:55.680 Right. She noted that only a few percent of the 00:06:55.680 --> 00:06:57.839 population engaged in this specific behavior. 00:06:58.279 --> 00:07:00.680 So this isn't the default for every bird. It 00:07:00.680 --> 00:07:03.540 is a rare but highly sophisticated adaptation. 00:07:04.180 --> 00:07:06.620 We are seeing a natural resource with intrinsic 00:07:06.620 --> 00:07:09.439 practical value being utilized within a complex 00:07:09.439 --> 00:07:11.279 reproductive framework. But it's very immediate. 00:07:11.550 --> 00:07:14.209 It is. The penguins are trading physical objects 00:07:14.209 --> 00:07:16.329 for an immediate need. If we want to look at 00:07:16.329 --> 00:07:18.589 what happens when a trade requires memory and 00:07:18.589 --> 00:07:21.290 delayed gratification, we need to shift our focus 00:07:21.290 --> 00:07:23.569 to an entirely different environment. Let's do 00:07:23.569 --> 00:07:26.069 that. We are moving from the Antarctic ice to 00:07:26.069 --> 00:07:28.870 the dense jungle of Thai National Park. Shifting 00:07:28.870 --> 00:07:31.930 our focus to our closest evolutionary relatives. 00:07:32.460 --> 00:07:35.980 chimpanzees? Yes. This brings us to a landmark 00:07:35.980 --> 00:07:39.120 study by the Max Planck Institute for Evolutionary 00:07:39.120 --> 00:07:41.699 Anthropology. It was published in the Public 00:07:41.699 --> 00:07:43.980 Library of Science. And the premise of this study 00:07:43.980 --> 00:07:46.279 is what really hooked me. It's critical context. 00:07:46.600 --> 00:07:48.600 The researchers didn't just go into the jungle 00:07:48.600 --> 00:07:51.399 looking for transactional sex among chimps. No. 00:07:51.639 --> 00:07:53.519 They had a bigger human question in mind. They 00:07:53.519 --> 00:07:56.339 were actually attempting to test a major theory 00:07:56.339 --> 00:07:59.000 about human evolution known as the meat for sex 00:07:59.000 --> 00:08:01.980 hypothesis. Which is the theory that back in 00:08:01.980 --> 00:08:05.439 early human hunter -gatherer societies, the most 00:08:05.439 --> 00:08:08.480 successful male hunters secured the most sexual 00:08:08.480 --> 00:08:10.600 partners. The ones bringing home the most protein, 00:08:10.740 --> 00:08:13.259 exactly. It makes sense on a basic survival level. 00:08:13.420 --> 00:08:15.740 Early anthropologists hypothesized that this 00:08:15.740 --> 00:08:18.300 dynamic was a foundational building block of 00:08:18.300 --> 00:08:20.560 human societal structure. But we obviously can't 00:08:20.560 --> 00:08:22.980 go back in time to watch early hominids. We can't. 00:08:23.279 --> 00:08:25.920 So researchers turn to wild chimpanzees, they 00:08:25.920 --> 00:08:28.540 form complex communities, hunt cooperatively, 00:08:28.740 --> 00:08:31.279 and share many social parallels with early humans. 00:08:31.519 --> 00:08:34.019 The goal was to see if this meat -for -sex dynamic 00:08:34.019 --> 00:08:37.299 existed in a species so closely related to us. 00:08:37.679 --> 00:08:40.480 And the findings were staggering. Yes, the headline 00:08:40.480 --> 00:08:43.750 is amazing. The study concluded that yes, females 00:08:43.750 --> 00:08:47.149 do offer sex to males in exchange for meat. But 00:08:47.149 --> 00:08:49.429 we need to clarify how that actually looks in 00:08:49.429 --> 00:08:51.490 practice. Right, because the actual mechanics 00:08:51.490 --> 00:08:53.950 of how this exchange happens completely shattered 00:08:53.950 --> 00:08:56.330 the initial expectations. It wasn't the direct 00:08:56.330 --> 00:08:58.730 transaction you might picture. This is a crucial 00:08:58.730 --> 00:09:01.730 distinction. When humans hear exchanging meat 00:09:01.730 --> 00:09:05.009 for sex, we default to visualizing a direct, 00:09:05.289 --> 00:09:08.230 immediate trade. Like buying a coffee. You hand 00:09:08.230 --> 00:09:10.860 over a piece of meat. and a sexual favor is immediately 00:09:10.860 --> 00:09:14.539 returned. Exactly. But that kind of instantaneous 00:09:14.539 --> 00:09:18.269 one to one exchange was rarely, if ever, observed 00:09:18.269 --> 00:09:20.950 by the researchers. That part threw me off at 00:09:20.950 --> 00:09:23.029 first. It wasn't a vending machine transaction. 00:09:23.149 --> 00:09:25.610 There was no stake equals immediate copulation 00:09:25.610 --> 00:09:27.649 dynamic playing out in the jungle. If we connect 00:09:27.649 --> 00:09:29.909 this to the bigger picture, what we are actually 00:09:29.909 --> 00:09:32.429 witnessing is the establishment of a long -term 00:09:32.429 --> 00:09:34.409 economic system. The long -term being the key 00:09:34.409 --> 00:09:37.850 word. Yes. These chimpanzees form sophisticated 00:09:37.850 --> 00:09:40.169 communities based around hunting and sharing 00:09:40.169 --> 00:09:42.710 meat over extended periods. So it's not just 00:09:42.710 --> 00:09:46.690 a one -off event. No. The data revealed that 00:09:46.690 --> 00:09:49.509 females within a specific meat sharing community 00:09:49.509 --> 00:09:52.070 have a strong tendency to copulate with the males 00:09:52.070 --> 00:09:54.830 of their own meat sharing community. Regardless 00:09:54.830 --> 00:09:57.470 of who handed them meat on any given Tuesday. 00:09:57.809 --> 00:10:00.049 Precisely. It's not about the immediate exchange. 00:10:00.210 --> 00:10:02.409 It's like keeping a running tab at a local bar. 00:10:02.590 --> 00:10:04.470 That's a great way to think about it. Christina 00:10:04.470 --> 00:10:06.690 Gomes, one of the researchers, actually stated 00:10:06.690 --> 00:10:10.570 that the study strongly suggests that wild chimpanzees 00:10:10.570 --> 00:10:13.669 exchange meat for sex and do so on a long -term 00:10:13.669 --> 00:10:16.649 basis. Think about the cognitive processing required 00:10:16.649 --> 00:10:19.769 for that. It has to be immense. It is. This isn't 00:10:19.769 --> 00:10:22.649 a simple biological reflex. For this system to 00:10:22.649 --> 00:10:24.990 work, the animals have to recognize individuals. 00:10:25.149 --> 00:10:27.009 They have to remember past interactions. Exactly. 00:10:27.049 --> 00:10:28.950 They have to track who the reliable providers 00:10:28.950 --> 00:10:31.710 are over weeks or months and adjust their social 00:10:31.710 --> 00:10:34.320 and behaviors based on that accumulated data. 00:10:34.580 --> 00:10:37.200 So the males are providing high value calorically 00:10:37.200 --> 00:10:39.759 dense resources to the community over time. And 00:10:39.759 --> 00:10:42.200 the females are reciprocating that value through 00:10:42.200 --> 00:10:45.179 sexual access, but it is a trust -based economy. 00:10:45.419 --> 00:10:48.419 It completely blurs the line between a primal 00:10:48.419 --> 00:10:51.600 biological urge and a structured community -wide 00:10:51.600 --> 00:10:54.799 economy. They're essentially tracking social 00:10:54.799 --> 00:10:57.279 credit. They are, but again we're still dealing 00:10:57.279 --> 00:11:00.039 with natural resources that have intrinsic value. 00:11:00.220 --> 00:11:02.769 Right, meat is food. Just like for the penguins, 00:11:02.970 --> 00:11:05.309 it was stones for shelter. For the chimpanzees, 00:11:05.409 --> 00:11:08.149 it was meat for caloric energy. It has a practical, 00:11:08.450 --> 00:11:11.330 immediate use. The leap from trading valuable 00:11:11.330 --> 00:11:14.149 natural resources to trading something with abstract 00:11:14.149 --> 00:11:17.210 value is a massive cognitive hurdle. And that 00:11:17.210 --> 00:11:19.710 leads us to our third source. This is the one 00:11:19.710 --> 00:11:21.490 that really blows the doors off the whole topic. 00:11:21.610 --> 00:11:23.789 It is an incredible experiment. We are leaving 00:11:23.789 --> 00:11:26.529 the wild behind. and stepping into a laboratory 00:11:26.529 --> 00:11:29.149 at Yale New Haven Hospital. A very controlled 00:11:29.149 --> 00:11:31.250 environment. We're looking at a study involving 00:11:31.250 --> 00:11:33.409 researchers like Stephen J. Dovner and Stephen 00:11:33.409 --> 00:11:36.450 Levitt. They wanted to study the economic behavior 00:11:36.450 --> 00:11:39.269 of Confucian monkeys. And to do this, they introduced 00:11:39.269 --> 00:11:42.129 a completely artificial concept to the monkeys. 00:11:42.509 --> 00:11:45.690 Fiat currency. Yes. We need to define why fiat 00:11:45.690 --> 00:11:48.789 currency is such a difficult concept biologically. 00:11:48.990 --> 00:11:52.080 Because it's basically fake money. Exactly. Fiat 00:11:52.080 --> 00:11:56.100 currency has zero intrinsic value. The silver 00:11:56.100 --> 00:11:58.620 disks the researchers used had no nutritional 00:11:58.620 --> 00:12:00.580 value. You can't eat them. You can't use them 00:12:00.580 --> 00:12:03.279 for shelter. And they offered no physical warmth. 00:12:03.720 --> 00:12:06.379 To a monkey, a rock should theoretically have 00:12:06.379 --> 00:12:09.500 more inherent value than a silver disk. So to 00:12:09.500 --> 00:12:12.620 make this work, the monkey's brain has to process 00:12:12.620 --> 00:12:16.059 representation. The idea that this useless object 00:12:16.059 --> 00:12:19.519 represents future purchasing power. And the researchers 00:12:19.519 --> 00:12:22.379 successfully taught them this concept. They trained 00:12:22.379 --> 00:12:24.779 the monkeys that if they handed over a silver 00:12:24.779 --> 00:12:27.399 disc, they could exchange it for various treats. 00:12:27.879 --> 00:12:30.500 And the monkeys grasped the concept of exchanging 00:12:30.500 --> 00:12:33.539 this useless silver object for a tangible reward 00:12:33.539 --> 00:12:36.940 incredibly quickly. They really did. The researchers 00:12:36.940 --> 00:12:39.179 were primarily running tests on basic economic 00:12:39.179 --> 00:12:41.700 principles. Things like price shocks, budgeting. 00:12:41.980 --> 00:12:43.779 Right, and preferences for different types of 00:12:43.779 --> 00:12:46.559 food when prices changed. The monkeys were exhibiting 00:12:46.559 --> 00:12:49.440 rational economic behavior. But then an isolated 00:12:49.440 --> 00:12:51.840 incident occurred that wasn't part of any planned 00:12:51.840 --> 00:12:54.159 experiment. Right. So they gave the monkeys these 00:12:54.159 --> 00:12:56.679 silver disks expecting them to just buy apples 00:12:56.679 --> 00:12:59.440 or grapes. What actually happened? A researcher 00:12:59.440 --> 00:13:01.580 observed an interaction between two of the monkeys 00:13:01.580 --> 00:13:03.879 that completely sidestepped the food economy. 00:13:04.000 --> 00:13:06.759 This is the crazy part. One monkey was seen giving 00:13:06.759 --> 00:13:10.220 a silver disk to another monkey. And in exchange 00:13:10.220 --> 00:13:14.120 for that abstract currency, they engaged in sex. 00:13:14.460 --> 00:13:17.419 They took a completely artificial concept. a 00:13:17.419 --> 00:13:20.220 silver disc acting as fiat currency, and applied 00:13:20.220 --> 00:13:23.240 it to their most primal biological drive. Without 00:13:23.240 --> 00:13:25.600 any prompting from the researchers. But the detail 00:13:25.600 --> 00:13:28.620 that makes this truly unforgettable is what happened 00:13:28.620 --> 00:13:31.059 next. Immediately following the transaction, 00:13:31.320 --> 00:13:33.259 the monkey who received the silver disc, the 00:13:33.259 --> 00:13:35.080 one who was paid for the encounter, she took 00:13:35.080 --> 00:13:37.440 her newly earned money, walked right over to 00:13:37.440 --> 00:13:40.139 a researcher, and traded it for a great. It is 00:13:40.139 --> 00:13:43.799 the full economic life cycle, earning, exchanging, 00:13:43.940 --> 00:13:46.690 and spending all using an artificial currency. 00:13:46.909 --> 00:13:49.009 Let's break down the cognitive layers required 00:13:49.009 --> 00:13:51.850 for that sequence of events. First, the monkeys 00:13:51.850 --> 00:13:54.889 demonstrated a firm grasp of abstract value. 00:13:55.490 --> 00:13:58.049 Second, they took that abstract value and independently 00:13:58.049 --> 00:14:01.070 applied it to an interpersonal non -food transaction 00:14:01.070 --> 00:14:03.870 within their own social hierarchy. And third, 00:14:04.250 --> 00:14:06.230 there was the immediate conversion of that earned 00:14:06.230 --> 00:14:09.409 abstract currency back into a tangible survival 00:14:09.409 --> 00:14:12.840 resource. Buying the grape. Exactly. It demonstrates 00:14:12.840 --> 00:14:15.220 that the cognitive architecture required for 00:14:15.220 --> 00:14:19.419 complex commerce is not exclusively human. So 00:14:19.419 --> 00:14:21.559 what does this all mean for you listening? When 00:14:21.559 --> 00:14:23.679 you look at all three of these sources together, 00:14:24.259 --> 00:14:26.340 it challenges our entire perspective. It really 00:14:26.340 --> 00:14:29.259 does. We've got penguins executing calculated 00:14:29.259 --> 00:14:32.460 tidal heists. We have chimps building long -term 00:14:32.460 --> 00:14:34.740 social contracts based on meat distribution. 00:14:35.120 --> 00:14:37.860 And capuchin monkeys spontaneously inventing 00:14:37.860 --> 00:14:40.480 transactional sex with silver disks. Right. We 00:14:40.480 --> 00:14:42.679 like to look at commerce and economics as the 00:14:42.679 --> 00:14:45.700 pinnacle of human societal evolution. But this 00:14:45.700 --> 00:14:47.840 deep dive shows you that biology and economics 00:14:47.840 --> 00:14:50.860 are universally intertwined. They cannot be separated. 00:14:51.019 --> 00:14:53.480 The drive to survive, to mate, and to secure 00:14:53.480 --> 00:14:56.820 resources creates economies everywhere. It doesn't 00:14:56.820 --> 00:14:58.899 matter whether the currency is a rock, a piece 00:14:58.899 --> 00:15:01.919 of meat, or a useless piece of metal. It highlights 00:15:01.919 --> 00:15:04.559 the importance of evolutionary biology and understanding 00:15:04.559 --> 00:15:06.840 ourselves. Because we aren't as detached from 00:15:06.840 --> 00:15:09.399 nature as we think. Not at all. The complexities 00:15:09.399 --> 00:15:12.340 of our modern economies didn't simply materialize 00:15:12.340 --> 00:15:14.639 out of nowhere when humans learned to write or 00:15:14.639 --> 00:15:17.250 build cities. They were already there. The evolutionary 00:15:17.250 --> 00:15:19.909 roots of commerce, social debt, and transactional 00:15:19.909 --> 00:15:22.769 relationships are visible across the animal kingdom. 00:15:23.309 --> 00:15:26.169 We are simply expressing these ancient survival 00:15:26.169 --> 00:15:28.750 strategies through the highly complex lens of 00:15:28.750 --> 00:15:31.690 our modern world. To quickly recap this incredible 00:15:31.690 --> 00:15:34.049 journey for you today, we started at the bottom 00:15:34.049 --> 00:15:36.809 of the globe watching a daily penguins trade 00:15:36.809 --> 00:15:39.570 shelter materials for extra paracopulations while 00:15:39.570 --> 00:15:42.169 simultaneously window shopping for backup mates. 00:15:42.590 --> 00:15:45.509 Exactly. Then, we moved to the Thai National 00:15:45.509 --> 00:15:47.909 Park, where chimpanzees demonstrated that they 00:15:47.909 --> 00:15:50.909 don't just trade meat for sex directly, but instead 00:15:50.909 --> 00:15:53.950 rely on complex, long -term memory to build trust 00:15:53.950 --> 00:15:56.830 -based economies. The social credit system. Right. 00:15:57.210 --> 00:16:00.070 And finally, we ended up at Yale New Haven Hospital, 00:16:00.309 --> 00:16:02.389 watching cup -and -chin monkeys bridge the gap 00:16:02.389 --> 00:16:05.710 between abstract fiat currency and biological 00:16:05.710 --> 00:16:07.610 drives. Just so they could buy themselves a grape. 00:16:08.070 --> 00:16:10.529 It is a remarkable spectrum of cognitive and 00:16:10.529 --> 00:16:13.309 evolutionary behavior. And as we synthesize these 00:16:13.309 --> 00:16:15.529 findings, this raises an important question for 00:16:15.529 --> 00:16:18.850 you to mull over. What's that? We've seen how 00:16:18.850 --> 00:16:21.490 quickly abstract concepts like fiat currency 00:16:21.490 --> 00:16:24.350 and commerce can be adopted by capuchin monkeys 00:16:24.350 --> 00:16:27.350 to fulfill their basic biological drives. Almost 00:16:27.350 --> 00:16:31.169 instantaneously. So what other social or economic 00:16:31.169 --> 00:16:33.470 structures that we currently consider uniquely 00:16:33.470 --> 00:16:35.909 human are actually just waiting to be unlocked 00:16:35.909 --> 00:16:38.409 in the animal kingdom, assuming they're simply 00:16:38.409 --> 00:16:40.490 given the right kind of currency to work with? 00:16:40.840 --> 00:16:43.820 That is a fascinating thought to leave on. If 00:16:43.820 --> 00:16:46.840 they can figure out abstract money and transactional 00:16:46.840 --> 00:16:49.039 commerce that quickly, what else are they capable 00:16:49.039 --> 00:16:51.559 of if provided the right tools? It definitely 00:16:51.559 --> 00:16:53.659 changes how you look at a zoo, doesn't it? It 00:16:53.659 --> 00:16:56.000 really does. We want to thank you for joining 00:16:56.000 --> 00:16:58.820 us on this deep dive today. We hope this exploration 00:16:58.820 --> 00:17:01.080 into the complex economies of the animal world 00:17:01.080 --> 00:17:03.940 has sparked your curiosity. And maybe changed 00:17:03.940 --> 00:17:06.440 how you view the nature of commerce itself. Absolutely. 00:17:06.670 --> 00:17:09.130 Keep questioning the world around you. Keep looking 00:17:09.130 --> 00:17:11.470 for those unexpected connections and never stop 00:17:11.470 --> 00:17:11.789 learning.