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TIL that a Japanese mathematician independently invented much of calculus

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yVBr8 TIL in 1834, an American physician named John Cook Bennett published an article claiming that tomato ketchup helped with stomach disorders, including diarrhea. He even released "ketchup pills," which were marketed as medicine.
X0olR TIL in Iceland, during the Medieval Witch trials, majority of the executions were directed at men, with the last execution happening in 1683.
lo6m7 TIL a New York taxi driver once hit 240 consecutive green lights in a single drive around the city
R5jDw TIL The Thalweg principle is the legal principle that if the boundary between two political entities is stated to be a waterway without further description (e.g. right bank, eastern shore, low-tide line, etc.), the boundary follows the thalweg, the line of lowest elevation, of that watercourse.
bA8p TIL the act of self-mastery of a subject without teachers is called autodidacticism