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TIL Music is a 'Cultural Universal', which means it is a thing that is common to all known human cultures worldwide. These include: Personal Names, Sexual Jealousy, Proverbs, and Incest Prevention or Avoidance.

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vPw0r TIL Max Planck, the father of quantum theory, considered his quantum hypothesis just a mathematical trick to get the right answer rather than a sizable discovery until Einstein interpreted his hypothesis realistically and used it to explain physical phenomena.
6EARY TIL Native Americans never rode horses until the Europeans brought them in the 16th century
j6NNa TIL 20% of the United States' roads are in poor condition. This includes the 32% of urban pavements that are in bad shape.
VBE50 TIL. Physiologist Giles Brindley, in 1983 presented his treatment for erectile disfunction by injecting himself before his talk and dropping his pants to show the crowd of urologists.
woEv1 TIL that between the death of James Garfield on September 19, 1881, and October 11, 1881, Chester A. Arthur served as Chairman of the New York Republican Party while simultaneously serving as the President of the United States.