0:00 In July of 1518, a woman named Frau Troffea walked out of her house in Strasbourg and began to dance.0:07 Now Admin, in episode 119 we covered Australia’s military losing a war to twenty thousand emus, which felt like the absolute peak of historical absurdity.0:18 But this story...0:19 this might be stranger.0:21 Because Frau Troffea didn't stop dancing.0:24 She danced, silently and without music, for nearly a week straight.0:29 And then, people started to join her.0:32 Within a week, there were thirty-four other dancers.0:35 By August, there were four hundred.0:38 They weren't celebrating.0:40 They were frantic, their faces contorted, their bodies jerking until they collapsed from exhaustion, only to get up and start again.0:49 The city authorities were completely baffled.0:53 Their best physicians consulted and declared it a "natural disease" caused by "hot blood." Their prescription?1:01 Get this.1:01 The cure was MORE dancing.1:03 They figured the afflicted just needed to dance the fever out of their systems.1:09 So they cleared out guild halls, they built a massive wooden stage in the middle of the grain market, and they even hired professional musicians to play pipes and drums.1:21 They turned a crisis into a rave.1:24 And people started dying.1:26 At its peak, the Dancing Plague of 1518 was killing up to fifteen people PER DAY from strokes, heart attacks, and pure exhaustion.1:35 So what on earth was going on?1:37 The first and most famous theory is ergot poisoning.1:41 Ergot is a mold that grows on damp rye, which was the main ingredient for bread.1:47 And this mold contains a chemical that is...1:50 structurally similar to LSD.1:52 It can cause violent muscle spasms, convulsions, and hallucinations.1:57 So, were four hundred people just having a collective, agonizing bad trip from tainted bread?2:04 It’s a neat theory.2:05 But it doesn't quite hold up.2:07 The symptoms of ergotism are typically seizures and delirium, not the coordinated, non-stop dancing that was described for hours and days on end.2:18 And the poison doesn't explain why the phenomenon was so...2:22 contained.2:23 Why just Strasbourg?2:24 Why just this one bizarre symptom?2:27 The more likely answer is much more unsettling.2:30 It's what we now call a mass psychogenic illness.2:34 Which is a fancy term for something terrifyingly simple: stress becoming physically contagious.2:41 You have to remember what life was like in Strasbourg in 1518.2:45 It was AWFUL.2:46 There was famine.2:48 There were new, terrifying diseases like syphilis sweeping through Europe.2:53 Smallpox and leprosy were common.2:55 It was a time of extreme, inescapable misery and fervent superstition.3:01 The people believed in saints who could curse you, like Saint Vitus, who was said to inflict plagues of compulsive dancing.3:10 They were psychologically primed for disaster.3:13 So Frau Troffea starts dancing, maybe from some intense personal grief or distress.3:19 Others see her—people already living on a knife's edge of anxiety—and their own minds just...3:26 break.3:26 Their immense psychological pressure finds an outlet in the same physical act.3:32 It's not a conscious choice.3:34 It's a trance state.3:35 A desperate, physical scream enacted by an entire community.3:40 And where have we seen this before?3:42 The pattern is shockingly consistent.3:45 Look at the Tanganyika laughter epidemic of 1962.3:49 It started with three girls at a mission school, who just started laughing.3:54 The laughter spread to ninety-five students.3:57 The school had to be shut down.4:00 It spread to other villages.4:02 In total, over a thousand people were afflicted with fits of uncontrollable laughing and crying that lasted for months.4:10 No virus, no toxin.4:12 Just a trigger in a high-stress environment—in that case, the pressures of post-colonial education—spreading like a contagion from mind to mind.4:22 It’s even got a faint, distorted echo in modern viral social media challenges.4:28 One person does something strange, and suddenly millions are doing it.4:33 Now, the analogy breaks down pretty quickly—the Ice Bucket Challenge was a conscious choice for a good cause.4:41 But the underlying shape, the memetic spread of a physical behavior through a social network, is there.4:48 It shows how deeply our behavior is tied to the group.4:52 The Dancing Plague of 1518 finally subsided after a few months, when the authorities switched tactics.5:00 They banned all public dancing and music.5:03 They took the remaining dancers to a shrine to be prayed over.5:07 And eventually, the movement just...5:10 stopped.5:11 But the event leaves this permanent scar in the historical record.5:15 It's a reminder that the barrier between mind and body isn't just thin; under the right pressure, it can dissolve completely.5:24 The dancers weren't just individuals anymore.5:28 They had become a single, suffering organism, moved by a force they couldn't see or name.5:34 The real plague wasn't a germ.5:36 It was DESPAIR.