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TIL: In 1946 the US Army commissioned a documentary called " Let There be Light " intended to teach the public about PTSD and the treatment of the veterans with the mental disability, the film after it's release was banned in the US until the 1980s.

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eG4g TIL that in the 16th century, prestigious mathematics professorships could be “won” by defeating the current professor in a public algebra competition
0VmA TIL that sea otters have a pocket set across their chest in which they carry their favorite rock. This rock is used to crack open shellfish and each rock is unique to that specific otter. They tend to hold onto the same rock for life.
nd9d TIL: Witches are depicted as flying on brooms, because in the Middle Ages, people used a broom handle to vaginally inject a liquid concoction of hallucinogenic plants which would cause the “witches” to imagine they were flying.
VMJ8D TIL: Maximilian Kolbe, a Polish friar sent to Auschwitz for hiding jews; offered his life and volunteered to die in the place of another camp inmate who was about to executed, who cried that he had a ‘wife’ and a ‘child’. Maximilian on the other hand, had no family. In 1982 he was made into a Saint.
b96Qj TIL A Fitbit played a role in solving a murder. Using the Wife's Fitbit and analyzing her movements, analysts were able to create a timeline that proved the husband had created a false story.