Stories
True stories about how careful people figured something out. Or, in a few cases, did not. Each one has embedded questions inside the app that pause the reading at the moments where reasoning actually had to happen.
Great Experiments
Great Debates
Great Investigations
The Dreyfus Bordereau: When Junk Science Dressed as Math Convicted an Innocent Man
In 1894, French anthropometrist Alphonse Bertillon used a fake mathematical analysis of handwriting to help convict Captain Alfred Dreyfus of treason. The argument was unfalsifiable: matching handwriting proved guilt, mismatching handwriting also proved guilt.
Operation Mincemeat: How a Corpse with Fake Papers Saved Thousands of Lives
In 1943, British intelligence floated a corpse off the coast of Spain carrying forged documents that suggested the Allies would invade Greece, not Sicily. Hitler moved divisions east. The Sicily landing met half the resistance it should have.
Piltdown Man: How a Forgery Hid in Plain Sight for 41 Years
In 1912, an English amateur produced a skull that appeared to be the missing link between apes and humans. It was nationalist wishful thinking plus a stained orangutan jaw. It took until 1953 for fluorine dating to expose the fraud.
Typhoid Mary: How a Sanitary Engineer Tracked an Asymptomatic Carrier
George Soper investigated a typhoid outbreak by reverse-engineering the residence and employment history of every affected family. The pattern that emerged: a single Irish cook, Mary Mallon, who had been moving from household to household leaving outbreaks behind her. She had no symptoms herself.
The Coremans Report: How an Art Forger Was Caught by His Own Microscope
After WWII, Dutch painter Han van Meegeren was caught selling a "Vermeer" to a Nazi official. He defended himself by claiming he had forged it. Paul Coremans' chemical analysis proved him right - the paint contained a synthetic resin Vermeer could not have used.