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TIL that the idea that 19th century doctors would treat hysteria by clitoral massage to produce an orgasm and that vibrators were invented as a labour-saving device for doctors doing so became widely accepted in multiple fields despite the fact there is no evidence for it at all.

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OGlw4 TIL Mirror life’s potential to escape immune defenses and invade natural ecosystems might lead to pervasive lethal infections in a substantial fraction of plant and animal species, including humans.
dDr1d TIL that when star NBA player Reggie Lewis died in 1993, the remaining 8 million dollars of his contract still counted against the Celtics salary cap, which prevented them from signing a player of equal value for the next three seasons.
XEO0P TIL from 1800 to 1860, Vermont's census reported 17 slaves. It was eventually discovered that this was an error and, in fact, there never were any slaves in Vermont.
7r0g7 TIL that although the Great Chicago Fire is arguably the most famous fire in U.S. history, a far deadlier fire occurred on the same day in neighboring Wisconsin and Michigan. The Peshtigo Fire was responsible for the deaths of an estimated 2,500 people, more than any other fire in American history.
MPo8 TIL a college student emailed Steve Jobs complaining that Apple’s Media department were not replying to her emails for help with a school project. Jobs responded to her by saying “Our goals do not include helping you get a good grade. Sorry” and “Please leave us alone.”