WEBVTT 00:00:00.000 --> 00:00:02.600 In the late 1950s, the United States government 00:00:02.600 --> 00:00:05.769 sat down and, well, they ran the numbers on pretty 00:00:05.769 --> 00:00:08.169 terrifying hypothetical. Absolutely terrifying. 00:00:08.369 --> 00:00:10.410 Right. They were trying to figure out how to 00:00:10.410 --> 00:00:12.810 actually survive an all -out nuclear exchange. 00:00:12.810 --> 00:00:16.050 Yeah. And on one side of the ledger, they looked 00:00:16.050 --> 00:00:19.390 at building this massive, multi -billion dollar, 00:00:19.589 --> 00:00:21.829 state -of -the -art, anti -ballistic missile 00:00:21.829 --> 00:00:24.370 shield. Right. A technological marvel. Exactly. 00:00:24.690 --> 00:00:26.750 But then on the other side, they looked at, of 00:00:26.750 --> 00:00:29.910 all things, a cartoon turtle named Burt. Yeah, 00:00:29.910 --> 00:00:32.369 which is just so wild. It is. And the craziest 00:00:32.369 --> 00:00:35.210 part is, when the math was finally done, the 00:00:35.210 --> 00:00:37.329 military concluded that the cartoon turtle was 00:00:37.329 --> 00:00:39.250 actually the more practical national defense 00:00:39.250 --> 00:00:41.530 strategy. I mean, it sounds completely absurd 00:00:41.530 --> 00:00:44.189 on its face, doesn't it? We are talking about 00:00:44.189 --> 00:00:46.740 the dawn of the thermonuclear age here. This 00:00:46.740 --> 00:00:49.500 is an era defined by weapons that are capable 00:00:49.500 --> 00:00:52.799 of, you know, vaporizing entire cities in just 00:00:52.799 --> 00:00:55.219 a fraction of a second. Yeah. So the idea that 00:00:55.219 --> 00:00:57.740 a cheerful, whistling animated character was 00:00:57.740 --> 00:01:00.560 deployed as a legitimate geopolitical tool, well, 00:01:01.060 --> 00:01:02.820 it tells you everything you need to know about 00:01:02.820 --> 00:01:05.760 the sheer desperation of that specific era. It 00:01:05.760 --> 00:01:08.060 really does. And that contradiction, that is 00:01:08.060 --> 00:01:10.780 the mission for today's Deep Dive. We're looking 00:01:10.780 --> 00:01:13.560 at a really fascinating stack of sources today. 00:01:13.659 --> 00:01:15.719 Some incredible archival stuff in there. Yeah. 00:01:15.560 --> 00:01:17.840 We've got declassified Department of Defense 00:01:17.840 --> 00:01:21.640 civil defense memos, historical analyses of early 00:01:21.640 --> 00:01:24.400 Cold War strategy, scientific papers detailing 00:01:24.400 --> 00:01:27.260 the actual physics of nuclear blasts, and, of 00:01:27.260 --> 00:01:29.980 course, the archival 1952 civil defense film 00:01:29.980 --> 00:01:32.980 itself, Duck and Cover. The classic. Right. And 00:01:32.980 --> 00:01:35.120 for you listening, our goal today is to strip 00:01:35.120 --> 00:01:38.219 away the modern irony. Because, I mean, it is 00:01:38.219 --> 00:01:40.560 incredibly easy to look back at the 1950s and 00:01:40.560 --> 00:01:42.819 just laugh at the idea of hiding under a wooden 00:01:42.819 --> 00:01:44.760 desk from a hydrogen bomb. Oh, people mock it 00:01:44.760 --> 00:01:47.180 all. the time. Constantly. But we are going to 00:01:47.180 --> 00:01:50.140 break down the geopolitical terror that necessitated 00:01:50.140 --> 00:01:52.879 this campaign, the surprisingly sound physics 00:01:52.879 --> 00:01:55.920 behind its seemingly naive advice, and, well, 00:01:56.079 --> 00:01:58.359 the grim economic calculus that actually made 00:01:58.359 --> 00:02:00.079 it happen. Yeah, and to do that, I think we have 00:02:00.079 --> 00:02:01.959 to start with the artifact itself. Right, the 00:02:01.959 --> 00:02:06.180 film. Exactly. Before we get into the physics 00:02:06.180 --> 00:02:09.479 and the whole Cold War game theory aspect, we 00:02:09.479 --> 00:02:12.449 really need to understand what millions of American 00:02:12.449 --> 00:02:15.030 school children were actually sitting in dark 00:02:15.030 --> 00:02:17.469 classrooms watching. What were they actually 00:02:17.469 --> 00:02:20.110 seeing on the projector? Right, so Duck and Cover 00:02:20.110 --> 00:02:23.289 is a 9 minute and 15 second film. It was funded 00:02:23.289 --> 00:02:25.830 by the newly created Federal Civil Defense Administration 00:02:25.830 --> 00:02:28.490 and produced by a commercial firm called Archer 00:02:28.490 --> 00:02:31.539 Productions. And the format is just really striking. 00:02:31.699 --> 00:02:34.919 It uses this hybrid approach, like blending animation 00:02:34.919 --> 00:02:37.139 with live action footage. Which is pretty common 00:02:37.139 --> 00:02:39.319 for educational films then, yeah. Yeah, but the 00:02:39.319 --> 00:02:41.860 animated segment here is just pure distilled 00:02:41.860 --> 00:02:44.960 childhood innocence. You meet Burt. He's this 00:02:44.960 --> 00:02:47.460 anthropomorphic turtle walking down a country 00:02:47.460 --> 00:02:50.419 road just... picking flowers, and there is this 00:02:50.419 --> 00:02:53.580 very catchy nursery rhyme style theme song playing 00:02:53.580 --> 00:02:55.740 in the background. It's singing about how Bert 00:02:55.740 --> 00:02:58.599 is, quote, very alert and never gets hurt because 00:02:58.599 --> 00:03:01.520 he knows to duck and cover. And the visual metaphor 00:03:01.520 --> 00:03:03.759 they use for the nuclear threat in that animation 00:03:03.759 --> 00:03:05.979 is fascinating, especially because of how they 00:03:05.979 --> 00:03:08.539 scale it down for a child's comprehension. Yeah, 00:03:08.539 --> 00:03:10.919 it's not a bomber. Exactly. The danger isn't 00:03:10.919 --> 00:03:13.379 a Soviet bomber up in the sky. It's just a monkey. 00:03:13.460 --> 00:03:16.099 A monkey? A monkey sitting in a tree, holding 00:03:16.099 --> 00:03:18.539 a stick of dynamite or, you know, maybe a firecracker 00:03:18.539 --> 00:03:21.800 on a string. Right. And the monkey just dangles 00:03:21.800 --> 00:03:25.219 the explosive over Bert's head. Right. Bert senses 00:03:25.219 --> 00:03:28.039 the danger, immediately pulls his head and lends 00:03:28.039 --> 00:03:30.599 into a shell, and then the explosive goes off. 00:03:30.639 --> 00:03:33.659 Boom. Boom. The blast destroys the tree. It blows 00:03:33.659 --> 00:03:35.939 up the monkey. Yeah. But Bert pops his head out 00:03:35.939 --> 00:03:37.960 of his shell perfectly fine. Perfectly fine. 00:03:38.259 --> 00:03:40.740 But then... The moment that cartoon explosion 00:03:40.740 --> 00:03:43.599 finishes, the tone of the film just pivots hard. 00:03:43.699 --> 00:03:45.639 Oh, it really does. The animation stops, and 00:03:45.639 --> 00:03:48.719 we transition to this stark black and white live 00:03:48.719 --> 00:03:51.120 action footage. And you hear the voice of an 00:03:51.120 --> 00:03:53.620 actor, Robert Middleton, and he just drops the 00:03:53.620 --> 00:03:56.520 nursery rhyme cadence entirely. That's very serious. 00:03:57.000 --> 00:03:59.419 Very serious. He starts speaking directly to 00:03:59.419 --> 00:04:01.539 the kids watching, explaining that a bomb could 00:04:01.539 --> 00:04:04.199 go off at any time of day, completely without 00:04:04.199 --> 00:04:07.460 warning. And then it features real school children, 00:04:07.979 --> 00:04:10.460 actually filmed in New York City and Astoria, 00:04:10.979 --> 00:04:13.180 demonstrating exactly what to do when they see 00:04:13.180 --> 00:04:16.879 the blinding flash of an atomic explosion. Right. 00:04:17.240 --> 00:04:19.519 And the instructions he gives are so clinical 00:04:19.519 --> 00:04:22.930 and specific. Drop to the ground instantly. Scramble 00:04:22.930 --> 00:04:25.449 under a heavy desk. Just immediate action. Immediate. 00:04:25.449 --> 00:04:27.689 If you are in a hallway, you drop to the floor 00:04:27.689 --> 00:04:30.009 and press your body flat against the wall, making 00:04:30.009 --> 00:04:31.910 sure to turn your face away from the windows. 00:04:32.449 --> 00:04:34.250 Clasp your hands behind your neck to protect 00:04:34.250 --> 00:04:36.810 your spine and your face. It's intense. It is. 00:04:37.050 --> 00:04:39.029 But the psychological bridge they built here 00:04:39.029 --> 00:04:41.430 is actually quite clever. I mean, they used the 00:04:41.430 --> 00:04:44.310 animation to introduce the physical mechanic 00:04:44.310 --> 00:04:47.019 of ducking, right? With the turtle. Yeah, and 00:04:47.019 --> 00:04:48.720 then they immediately translate that mechanic 00:04:48.720 --> 00:04:51.420 into the real world with real kids. So they're 00:04:51.420 --> 00:04:54.019 raising the stakes without showing them actual 00:04:54.019 --> 00:04:56.259 footage of devastated cities. Which would have 00:04:56.259 --> 00:04:58.740 just traumatized them. And I think the psychological 00:04:58.740 --> 00:05:01.720 climate of that exact moment is crucial here. 00:05:02.220 --> 00:05:04.319 To understand why a film like this was rushed 00:05:04.319 --> 00:05:07.379 into schools in 1952, we really have to look 00:05:07.379 --> 00:05:10.660 at the massive geopolitical shockwave that hit 00:05:10.660 --> 00:05:12.779 the U .S. just a few years earlier. Yeah, the 00:05:12.779 --> 00:05:14.959 context is everything. Coming out of World War 00:05:14.959 --> 00:05:17.920 II, the U .S. had an absolute monopoly on atomic 00:05:17.920 --> 00:05:20.439 weapons. I mean, the Manhattan Project and the 00:05:20.439 --> 00:05:23.259 Trinity test gave America this comp card that 00:05:23.259 --> 00:05:25.980 literally no other nation possessed. Right. And 00:05:25.980 --> 00:05:28.019 the assumption in Washington, the prevailing 00:05:28.019 --> 00:05:30.600 wisdom, was that this monopoly would last for 00:05:30.600 --> 00:05:32.839 a decade. Maybe even two decades. They thought 00:05:32.839 --> 00:05:35.319 they had plenty of time. They really did. The 00:05:35.319 --> 00:05:37.600 scientific and industrial hurdles to enriching 00:05:37.600 --> 00:05:39.920 uranium and building a functional weapon were 00:05:39.920 --> 00:05:42.899 considered so astronomical that American intelligence 00:05:42.899 --> 00:05:45.259 genuinely believed the Soviet Union was years 00:05:45.259 --> 00:05:48.050 away from catching up. Right. But then. In August 00:05:48.050 --> 00:05:51.290 1949, American weather reconnaissance planes 00:05:51.290 --> 00:05:53.769 flying off the coast of Russia picked up something 00:05:53.769 --> 00:05:56.470 terrifying in the air. Radioactive isotopes. 00:05:56.790 --> 00:05:59.430 Exactly. The signature of a nuclear detonation. 00:05:59.470 --> 00:06:02.930 Which meant the Soviets had the bomb. Yes. They 00:06:02.930 --> 00:06:05.490 had successfully detonated their first nuclear 00:06:05.490 --> 00:06:08.649 device. which was codenamed Joe -1, and they 00:06:08.649 --> 00:06:11.389 achieved this far faster than anticipated, largely 00:06:11.389 --> 00:06:14.029 due to an extensive espionage ring. Right, people 00:06:14.029 --> 00:06:16.550 like Klaus Fuchs. Yes, Klaus Fuchs and others 00:06:16.550 --> 00:06:18.870 who had passed Manhattan Project's secrets directly 00:06:18.870 --> 00:06:21.529 to Moscow. So when President Truman announced 00:06:21.529 --> 00:06:24.230 this to the American public, the psychological 00:06:24.230 --> 00:06:27.370 safety net was just vaporized overnight. The 00:06:27.370 --> 00:06:30.029 oceans no longer protected the United States. 00:06:30.149 --> 00:06:32.129 Not anymore. And the timeline just accelerates 00:06:32.129 --> 00:06:35.660 from there. Because by the early 1950s, the Cold 00:06:35.660 --> 00:06:38.379 War turns into a hot war on the Korean Peninsula. 00:06:38.920 --> 00:06:41.560 The U .S. is actively fighting and the military 00:06:41.560 --> 00:06:43.720 is terrified that the conflict is going to pull 00:06:43.720 --> 00:06:46.300 in the People's Republic of China. Which would 00:06:46.300 --> 00:06:48.819 escalate things massively. Massively. Forcing 00:06:48.819 --> 00:06:51.160 a scenario where nuclear weapons might actually 00:06:51.160 --> 00:06:53.899 be used on the battlefield. And the sources highlight 00:06:53.899 --> 00:06:56.079 the desert rock exercises happening in Nevada 00:06:56.079 --> 00:06:58.439 right around this exact time. Oh, the desert 00:06:58.439 --> 00:07:00.699 rock exercises are a perfect illustration of 00:07:00.699 --> 00:07:03.339 the mindset back then. They are wild. Right. 00:07:03.680 --> 00:07:06.160 The US military was detonating actual nuclear 00:07:06.160 --> 00:07:08.860 weapons in the desert and placing American troops 00:07:08.860 --> 00:07:11.750 in trenches just a few miles away. Just a few 00:07:11.750 --> 00:07:15.209 miles from an atomic blast. Yes. The goal was 00:07:15.209 --> 00:07:19.250 to acclimatize soldiers to the flash, the shockwave, 00:07:19.610 --> 00:07:22.149 and just the overall psychological terror of 00:07:22.149 --> 00:07:24.089 a nuclear battlefield. Right. So they wouldn't 00:07:24.089 --> 00:07:25.970 freeze up. Exactly. So they could theoretically 00:07:25.970 --> 00:07:28.769 climb out of those trenches and fight in a radioactive 00:07:28.769 --> 00:07:31.189 environment. The threat of nuclear war wasn't 00:07:31.189 --> 00:07:34.230 some abstract concept to them. It was an operational 00:07:34.230 --> 00:07:37.029 reality they were actively drilling for. And 00:07:37.029 --> 00:07:38.529 adults were getting their own version of Burt 00:07:38.529 --> 00:07:41.149 the Turtle, too, right? Oh, definitely. In 1950, 00:07:41.269 --> 00:07:43.670 there was this major initiative called Alert 00:07:43.670 --> 00:07:46.649 America, and the government distributed a booklet 00:07:46.649 --> 00:07:49.810 called Survival Under Atomic Attack. Catchy title. 00:07:49.990 --> 00:07:52.629 Yeah, very blunt. It outlines six survival secrets, 00:07:52.990 --> 00:07:54.889 essentially telling adults to do the exact same 00:07:54.889 --> 00:07:58.329 thing, find shielding, drop flat, bury your face 00:07:58.329 --> 00:08:00.639 in the crook of your arm. Because the overarching 00:08:00.639 --> 00:08:03.980 goal was mass mobilization of awareness. The 00:08:03.980 --> 00:08:05.959 Federal Civil Defense Administration realized 00:08:05.959 --> 00:08:09.180 that a population completely paralyzed by fear 00:08:09.180 --> 00:08:12.920 is a population that perishes. They needed to 00:08:12.920 --> 00:08:15.379 engineer a reflex. OK, but I have to stop you 00:08:15.379 --> 00:08:17.579 there, though, because this is the part I find 00:08:17.579 --> 00:08:20.470 really, really difficult to reconcile. We know 00:08:20.470 --> 00:08:23.269 what these weapons do. We know the apocalyptic 00:08:23.269 --> 00:08:26.670 scale of a hydrogen bomb. Telling a second grader 00:08:26.670 --> 00:08:28.850 that hiding under a wooden school desk is going 00:08:28.850 --> 00:08:31.709 to save them from a thermonuclear fireball feels 00:08:31.709 --> 00:08:35.250 almost, I don't know, cruelly naive. It does 00:08:35.250 --> 00:08:37.610 feel that way. So was the government really that 00:08:37.610 --> 00:08:39.509 ignorant of the science or were they just lying 00:08:39.509 --> 00:08:41.799 to the public to prevent mass panic? You know, 00:08:41.799 --> 00:08:44.179 that is the most common critique of the entire 00:08:44.179 --> 00:08:46.440 civil defense era. Yeah. And it is a completely 00:08:46.440 --> 00:08:49.100 fair question. Right. But the historical consensus 00:08:49.100 --> 00:08:52.100 from the declassified memos suggests the government 00:08:52.100 --> 00:08:54.580 was deeply aware of the science. And they weren't 00:08:54.580 --> 00:08:56.580 lying. They were actually playing a very grim 00:08:56.580 --> 00:09:00.039 game of statistics to understand why ducking 00:09:00.039 --> 00:09:02.960 under a desk actually works. We have to look 00:09:02.960 --> 00:09:06.360 at the physics of a nuclear detonation, specifically 00:09:06.360 --> 00:09:08.860 the difference between being at ground zero versus 00:09:08.860 --> 00:09:11.370 being on the periphery. Right, ground zero being 00:09:11.370 --> 00:09:13.730 the hypocenter. I mean, obviously, if you are 00:09:13.730 --> 00:09:15.990 directly under the bomb when it detonates, a 00:09:15.990 --> 00:09:18.309 wooden dust is not going to help you. No, not 00:09:18.309 --> 00:09:21.470 at all. If you are at ground zero, you are dealing 00:09:21.470 --> 00:09:23.750 with a fireball that reaches temperatures hotter 00:09:23.750 --> 00:09:27.049 than the core of the sun. Wow! The nectar test 00:09:27.049 --> 00:09:29.250 from Operation Castle, which is detailed in the 00:09:29.250 --> 00:09:31.789 physics papers from our sources, had a yield 00:09:31.789 --> 00:09:35.840 of 1 .69 megatons. The fireball radius alone 00:09:35.840 --> 00:09:38.720 for that was over a kilometer wide. Just the 00:09:38.720 --> 00:09:40.820 fireball. Just the fireball. Everything inside 00:09:40.820 --> 00:09:44.039 that radius is instantly vaporized. The government 00:09:44.039 --> 00:09:46.620 knew they could not save those people. The math 00:09:46.620 --> 00:09:48.809 simply does not allow it. But the vast majority 00:09:48.809 --> 00:09:51.149 of the population in a metropolitan area wouldn't 00:09:51.149 --> 00:09:53.470 be in that one kilometer circle. They would be 00:09:53.470 --> 00:09:56.330 spread out, you know, five, ten or fifteen miles 00:09:56.330 --> 00:09:59.529 away. And that is exactly where the physics of 00:09:59.529 --> 00:10:01.870 the blast wave make the duck and cover reflex 00:10:01.870 --> 00:10:05.450 highly effective. OK, how so? Well, when a nuclear 00:10:05.450 --> 00:10:08.190 weapon detonates, the energy is released in distinct 00:10:08.190 --> 00:10:10.870 phases. The very first thing that happens is 00:10:10.870 --> 00:10:14.789 an intense burst of thermal radiation, a blinding 00:10:14.789 --> 00:10:17.419 double flash of light and heat. Right. And because 00:10:17.419 --> 00:10:20.539 light travels incredibly fast, that thermal pulse 00:10:20.539 --> 00:10:23.840 arrives almost instantaneously, even if you are 00:10:23.840 --> 00:10:26.200 miles away. Yeah, the sources mention that this 00:10:26.200 --> 00:10:28.360 flash is so bright it can cause temporary or 00:10:28.360 --> 00:10:30.179 even permanent blindness if you're looking at 00:10:30.179 --> 00:10:32.759 it. Yeah. And the heat is intense enough to ignite 00:10:32.759 --> 00:10:35.320 combustible materials and cause severe third 00:10:35.320 --> 00:10:37.759 degree burns. And the lethal dose for those thermal 00:10:37.759 --> 00:10:40.500 burns, the LD50, where 50 % of exposed people 00:10:40.500 --> 00:10:43.000 would die, that extends much further out than 00:10:43.000 --> 00:10:45.919 the fireball itself. Depending on the weather 00:10:45.919 --> 00:10:48.500 and the weapon's yield, the thermal burn radius 00:10:48.500 --> 00:10:51.399 can extend out to 12 kilometers or more. Wow. 00:10:51.539 --> 00:10:53.059 So if you were just looking out your classroom 00:10:53.059 --> 00:10:55.500 window 10 kilometers away when the bomb detonates, 00:10:55.960 --> 00:10:58.679 that flash alone is a devastating, potentially 00:10:58.679 --> 00:11:01.220 fatal event. This actually reminds me of how 00:11:01.220 --> 00:11:03.500 a thunderstorm works, but on a horrific scale. 00:11:03.700 --> 00:11:05.960 Oh, that's a good analogy. Right, like when lightning 00:11:05.960 --> 00:11:08.909 strikes, you see the flash instantly. But because 00:11:08.909 --> 00:11:11.470 sound travels much slower than light, you have 00:11:11.470 --> 00:11:13.389 to wait several seconds before you hear the thunder. 00:11:13.490 --> 00:11:16.470 Yes. In a nuclear blast, you see the blinding 00:11:16.470 --> 00:11:19.590 thermal flash instantly. But the kinetic blast 00:11:19.590 --> 00:11:22.570 wave, the physical wall of pressure destroying 00:11:22.570 --> 00:11:26.110 everything in its path, that actually takes time 00:11:26.110 --> 00:11:29.860 to travel outward. That is the exact mechanical 00:11:29.860 --> 00:11:32.139 gap the government was trying to exploit. Right. 00:11:32.240 --> 00:11:34.919 If you are five miles away, you might have 10 00:11:34.919 --> 00:11:37.399 or 15 seconds between the moment the room lights 00:11:37.399 --> 00:11:39.820 up with a thermal flash and the moment the kinetic 00:11:39.820 --> 00:11:41.899 shockwave actually hits the building. So if you 00:11:41.899 --> 00:11:44.220 just stand there staring out the window wondering 00:11:44.220 --> 00:11:46.659 what that bright light was. And the shockwave 00:11:46.659 --> 00:11:49.740 hits, the window shatters inward, and the glass 00:11:49.740 --> 00:11:51.759 is accelerated to hundreds of miles an hour. 00:11:51.899 --> 00:11:54.120 Which means you were hit with a lethal wall of 00:11:54.120 --> 00:11:57.240 shrapnel. Exactly. But if you possess the ingrained 00:11:57.240 --> 00:11:59.720 drilled reflex to immediately drop to the floor 00:11:59.720 --> 00:12:01.580 and scramble under a heavy piece of furniture, 00:12:02.320 --> 00:12:05.120 the microsecond you see that flash. You change 00:12:05.120 --> 00:12:08.059 the statistical outcome. You do. You minimize 00:12:08.059 --> 00:12:10.519 your exposure to the thermal heat by getting 00:12:10.519 --> 00:12:13.159 out of the direct line of sight. And more importantly, 00:12:13.500 --> 00:12:16.039 when that delayed blast wave arrives and blows 00:12:16.039 --> 00:12:18.080 out every window and shreds the interior of the 00:12:18.080 --> 00:12:20.899 room, the heavy wooden desk takes the brunt of 00:12:20.899 --> 00:12:23.460 the flying glass and collapsing ceiling tiles 00:12:23.460 --> 00:12:27.919 instead of your body. Wow. It fundamentally reframes 00:12:27.919 --> 00:12:30.299 the whole campaign for me. They weren't trying 00:12:30.299 --> 00:12:32.720 to build a magic shield against the fireball 00:12:32.720 --> 00:12:34.919 at all. Not at all. They were trying to stop 00:12:34.919 --> 00:12:37.360 millions of people on the periphery from being 00:12:37.360 --> 00:12:40.559 blinded and shredded by flying glass. If you 00:12:40.559 --> 00:12:43.259 apply that reflex to a city of millions, you 00:12:43.259 --> 00:12:45.940 are potentially saving hundreds of thousands 00:12:45.940 --> 00:12:49.019 of lives from blunt force trauma and arterial 00:12:49.019 --> 00:12:51.259 bleeding. And the science also validates the 00:12:51.259 --> 00:12:53.100 second half of the civil defense protocols, which 00:12:53.100 --> 00:12:55.639 is sheltering in place. Right. Staying inside. 00:12:56.039 --> 00:12:59.159 Yeah. After the initial thermal pulse and the 00:12:59.159 --> 00:13:01.759 kinetic blast wave have passed, the secondary 00:13:01.759 --> 00:13:04.500 threat emerges, which is nuclear fallout. The 00:13:04.500 --> 00:13:06.879 irradiated debris that gets sucked up into the 00:13:06.879 --> 00:13:10.019 mushroom cloud begins to rain back down. Staying 00:13:10.019 --> 00:13:12.960 indoors, undercover, prevents direct physical 00:13:12.960 --> 00:13:16.039 contact with that radioactive ash. And the sources 00:13:16.039 --> 00:13:18.399 point out a strategic logistical element to that 00:13:18.399 --> 00:13:21.039 too. Oh, absolutely. If the population is drilled 00:13:21.039 --> 00:13:23.539 to shelter in place, they aren't flooding the 00:13:23.539 --> 00:13:25.759 streets. They aren't causing massive gridlock 00:13:25.759 --> 00:13:27.700 trying to flee the city. Right, which would be 00:13:27.700 --> 00:13:29.919 a nightmare. Right. It keeps the roads clear 00:13:29.919 --> 00:13:32.600 for whatever emergency vehicles and military 00:13:32.600 --> 00:13:35.529 infrastructure actually survived to access the 00:13:35.529 --> 00:13:39.070 hardest hit areas. It was a very cold macro level 00:13:39.070 --> 00:13:42.009 strategy designed to maintain civil order and 00:13:42.009 --> 00:13:44.690 maximize the survival of the state itself. And 00:13:44.690 --> 00:13:46.350 this really brings us to the most fascinating 00:13:46.350 --> 00:13:48.230 part of the declassified amount of the economic 00:13:48.230 --> 00:13:51.129 calculations. Yes, the money. Because if civil 00:13:51.129 --> 00:13:54.070 defense education was mathematically proven to 00:13:54.070 --> 00:13:57.409 save lives on the periphery. Why didn't the government 00:13:57.409 --> 00:14:00.409 just focus its resources on building better military 00:14:00.409 --> 00:14:03.009 defenses to intercept the bombs before they could 00:14:03.009 --> 00:14:05.090 detonate at all? And this is where we get into 00:14:05.090 --> 00:14:07.500 the game theory of the Cold War. In the late 00:14:07.500 --> 00:14:10.600 1950s and early 1960s, the Department of Defense 00:14:10.600 --> 00:14:13.059 was running highly classified war games. They 00:14:13.059 --> 00:14:15.399 were modeling varying levels of Soviet attacks, 00:14:15.620 --> 00:14:17.559 different warning times, and casualty rates. 00:14:18.100 --> 00:14:21.179 And they estimated that a robust nationwide civil 00:14:21.179 --> 00:14:23.480 defense program, you know, teaching things like 00:14:23.480 --> 00:14:25.940 duck and cover and building fallout shelters, 00:14:26.419 --> 00:14:29.539 could save roughly 27 million American lives 00:14:29.539 --> 00:14:32.019 in the event of an exchange. Which is a massive 00:14:32.019 --> 00:14:34.539 number. But at the same time, the military was 00:14:34.539 --> 00:14:37.350 pouring research into a missile defense system 00:14:37.350 --> 00:14:40.230 called the Nike Zeus. Right. The concept there 00:14:40.230 --> 00:14:42.850 was to launch interceptor missiles into the upper 00:14:42.850 --> 00:14:45.210 atmosphere or space to physically collide with 00:14:45.210 --> 00:14:48.529 or detonate near incoming Soviet warheads. Destroying 00:14:48.529 --> 00:14:50.549 them before they reach American cities. Exactly. 00:14:50.710 --> 00:14:52.950 Shooting a bullet with a bullet basically. Which 00:14:52.950 --> 00:14:56.629 honestly sounds vastly preferable to asking citizens 00:14:56.629 --> 00:14:58.990 to hide in their basements. It does until you 00:14:58.990 --> 00:15:01.970 look at the economics of offensive versus defensive 00:15:01.970 --> 00:15:05.139 nuclear warfare. The huge problem that Nike's 00:15:05.139 --> 00:15:07.740 use program faced was the concept of the cost 00:15:07.740 --> 00:15:10.419 exchange ratio. OK, the cost exchange ratio. 00:15:10.960 --> 00:15:13.279 As the Soviet Union ramped up its industrial 00:15:13.279 --> 00:15:16.659 base, they began producing a massive stockpile 00:15:16.659 --> 00:15:19.860 of intercontinental ballistic missiles. And the 00:15:19.860 --> 00:15:21.940 math just spirals out of control for the defender 00:15:21.940 --> 00:15:24.240 at that point. It really does. Because the sources 00:15:24.240 --> 00:15:27.419 detail how the offensive side has this massive 00:15:27.419 --> 00:15:30.279 financial advantage. If the Soviets build one 00:15:30.279 --> 00:15:32.840 new missile, the U .S. has to build a highly 00:15:32.840 --> 00:15:36.539 complex, incredibly expensive radar system just 00:15:36.539 --> 00:15:39.320 to track it, plus computers to calculate its 00:15:39.320 --> 00:15:41.919 trajectory, and a precision interceptor missile 00:15:41.919 --> 00:15:44.600 to shoot it down. And the disparity becomes even 00:15:44.600 --> 00:15:47.399 worse when you introduce decoys. Oh, right. An 00:15:47.399 --> 00:15:49.659 incoming Soviet missile could release one live 00:15:49.659 --> 00:15:53.500 nuclear warhead alongside, say, 10 cheap lightweight 00:15:53.500 --> 00:15:55.899 metal balloons shaped exactly like warheads. 00:15:56.620 --> 00:15:59.559 Very. And in the vacuum of space, they all travel 00:15:59.559 --> 00:16:02.779 at the exact same speed. The defensive radar 00:16:02.779 --> 00:16:05.879 cannot distinguish the real bomb from the empty 00:16:05.879 --> 00:16:07.779 balloons. So they have to shoot at all of them. 00:16:07.899 --> 00:16:10.179 Therefore, the defender has to launch interceptors 00:16:10.179 --> 00:16:13.100 at all 11 targets. That is insane. The attacker 00:16:13.100 --> 00:16:15.480 spends, what, a few thousand dollars on metal 00:16:15.480 --> 00:16:18.480 balloons and forces the defender to spend tens 00:16:18.480 --> 00:16:20.419 of millions of dollars shooting them down. You 00:16:20.419 --> 00:16:22.600 can literally bankrupt your enemy just by making 00:16:22.600 --> 00:16:24.899 them try to defend themselves. Exactly. And when 00:16:24.899 --> 00:16:27.379 the Secretary of Defense and the military planners 00:16:27.379 --> 00:16:30.320 looked at that economic reality, they realized 00:16:30.320 --> 00:16:32.620 that trying to build a leak proof missile shield 00:16:32.620 --> 00:16:35.419 over the entire United States was financially 00:16:35.419 --> 00:16:38.320 impossible. And technologically. unfeasible? 00:16:38.500 --> 00:16:41.080 Probably both. The Soviets could always overcome 00:16:41.080 --> 00:16:43.240 the shield, similarly by building more cheap 00:16:43.240 --> 00:16:45.080 offensive weapons than the U .S. could build 00:16:45.080 --> 00:16:47.500 expensive defensive interceptors. So they look 00:16:47.500 --> 00:16:49.440 back at the civil defense models. They looked 00:16:49.440 --> 00:16:52.000 at the 27 million lives saved through public 00:16:52.000 --> 00:16:54.700 education, fallout shelters and basic survival 00:16:54.700 --> 00:16:57.340 drills. And they concluded that investing in 00:16:57.340 --> 00:16:59.740 civil defense was the most cost effective way 00:16:59.740 --> 00:17:02.259 to preserve the American population. Just basic 00:17:02.259 --> 00:17:04.779 math. Pretty much. You get vastly more lives 00:17:04.779 --> 00:17:07.589 saved per dollar spent. by teaching a child to 00:17:07.589 --> 00:17:10.450 duck under a desk and funding local fallout shelters 00:17:10.450 --> 00:17:13.329 than you do by trying to fund a doomed missile 00:17:13.329 --> 00:17:16.569 interceptor program. It is the ultimate triumph 00:17:16.569 --> 00:17:20.069 of pragmatic, grim survival math over high -tech 00:17:20.069 --> 00:17:23.029 military ambition. That is the core revelation 00:17:23.029 --> 00:17:25.809 here, I think. A cheap nine -minute cartoon about 00:17:25.809 --> 00:17:29.049 a turtle was elevated to a pillar of national 00:17:29.049 --> 00:17:31.950 defense strategy not out of naivety, but out 00:17:31.950 --> 00:17:35.259 of brutal economic necessity. Duck and Cover 00:17:35.259 --> 00:17:37.799 wasn't just a film. It was the most financially 00:17:37.799 --> 00:17:39.940 viable weapon the government had to mitigate 00:17:39.940 --> 00:17:42.460 the casualty numbers of an apocalypse. It really 00:17:42.460 --> 00:17:45.099 was. And that profound weight is exactly why 00:17:45.099 --> 00:17:47.319 the film has secured such a strange and enduring 00:17:47.319 --> 00:17:49.660 legacy. Because it was an uncopyrighted government 00:17:49.660 --> 00:17:52.079 production, it entered the public domain. It 00:17:52.079 --> 00:17:54.039 survived the end of the Cold War and found an 00:17:54.039 --> 00:17:56.619 entirely new life in the digital age. It really 00:17:56.619 --> 00:17:58.859 became a cultural touchstone. I mean, it's been 00:17:58.859 --> 00:18:01.900 uploaded to YouTube millions of times. Turner 00:18:01.900 --> 00:18:04.440 Classic movies used to broadcast it during late 00:18:04.440 --> 00:18:07.980 night underground showcases. The Library of Congress 00:18:07.980 --> 00:18:10.000 officially inducted it into the National Film 00:18:10.000 --> 00:18:13.680 Registry in 2004, literally declaring it an artifact 00:18:13.680 --> 00:18:17.079 of cultural, historical and aesthetic significance. 00:18:17.940 --> 00:18:20.839 Because it became the defining shorthand for 00:18:20.839 --> 00:18:24.200 the anxiety of the 1950s. Filmmakers and artists 00:18:24.200 --> 00:18:27.619 have referenced it for decades. In the 1999 animated 00:18:27.619 --> 00:18:29.799 film, The Iron Giant, which is perfectly set 00:18:29.799 --> 00:18:32.400 during this era of paranoia, by the way, there 00:18:32.400 --> 00:18:34.920 is a direct parody of the duck and cover film 00:18:34.920 --> 00:18:37.319 playing in the protagonist's classroom. Oh, I 00:18:37.319 --> 00:18:39.759 remember that. It just demonstrates how deeply 00:18:39.759 --> 00:18:41.940 those specific images, the turtle, the flash, 00:18:42.000 --> 00:18:44.259 the desk, were burned into the collective memory 00:18:44.259 --> 00:18:46.279 of the generations who lived through the real 00:18:46.279 --> 00:18:48.900 threat of the Cold War. It is incredible to trace 00:18:48.900 --> 00:18:51.119 the journey of this material. What starts as 00:18:51.119 --> 00:18:53.579 a child's sing -along reveals itself to be a 00:18:53.579 --> 00:18:56.079 masterclass in the physics of blast waves, a 00:18:56.079 --> 00:18:58.420 psychological tool to prevent national panic, 00:18:58.960 --> 00:19:01.700 and, well, a cold calculation of defense economics. 00:19:02.200 --> 00:19:04.880 It forces us to respect the logic of the era. 00:19:05.440 --> 00:19:07.299 I mean, the people who made this film weren't 00:19:07.299 --> 00:19:09.359 fools. No, not at all. They were trying to solve 00:19:09.359 --> 00:19:12.380 an impossible problem. How do you manage the 00:19:12.380 --> 00:19:15.099 psychological and physical survival of a nation 00:19:15.099 --> 00:19:17.940 living 20 minutes away from annihilation? And 00:19:17.940 --> 00:19:20.339 for you listening, that core dilemma hasn't actually 00:19:20.339 --> 00:19:23.859 been solved. It's just changed shape. The challenge 00:19:23.859 --> 00:19:26.579 of how a society communicates an unimaginable 00:19:26.579 --> 00:19:29.200 existential threat to the general public, how 00:19:29.200 --> 00:19:31.579 you provide actionable survival steps without 00:19:31.579 --> 00:19:34.519 causing mass panic, is a puzzle we are clearly 00:19:34.519 --> 00:19:37.420 still wrestling with. Which leads a very specific 00:19:37.420 --> 00:19:40.400 question to consider. If a catastrophic global 00:19:40.400 --> 00:19:42.579 threat emerged tomorrow, Whether it is a new 00:19:42.579 --> 00:19:45.200 pandemic, a massive cyber attack on the power 00:19:45.200 --> 00:19:47.839 grid or extreme natural disasters, something 00:19:47.839 --> 00:19:50.420 that required immediate coordinated action from 00:19:50.420 --> 00:19:53.339 every citizen to survive. What is our modern 00:19:53.339 --> 00:19:55.619 equivalent of Burt the Turtle? And perhaps the 00:19:55.619 --> 00:19:58.140 more unsettling thought in today's incredibly 00:19:58.140 --> 00:20:00.400 fragmented media landscape where we don't all 00:20:00.400 --> 00:20:02.579 sit in the same classroom watching the same projector. 00:20:03.079 --> 00:20:05.480 Would a message like that even reach us in time? 00:20:05.720 --> 00:20:08.259 And if it did, would we trust it enough to duck?