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TIL the word "robot" comes from the Czech word "robota," meaning "forced labor," and was first used in a 1920 play where robots rebelled against humans.

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xVxyD TIL in 1714, 2 gunships fought for 14 hours, before one ran out of ammunition. The captain messaged his opponent, thanking him for a fine duel, and asking for more ammunition, so that the fight could continue. His opponent refused, but they then agreed to sail away in opposite directions.
GY0Bg TIL a woman recovering from shingles had such an itchy scalp that she painlessly scratched through the skull to the brain
GY6x1 TIL that Batman is based on an English vigilante named Bill Smith who fought crime in the 1800s.
67yY TIL that the renowned mathematician Abraham de Moivre correctly calculated the day of his death
gr1m8 TIL humans have smaller jaws and bigger brains than our primate forebears because of a mutation in the MYH16 gene. The jaw muscles are made smaller and weaker as a result of the gene mutation, which lessens the force applied to the skull, which can expand, letting the brain grow bigger.