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TIL that Hungarian mathematician Paul Erdős worked on mathematics for up to 20 hours a day and at the end of his life had output a mathematical yield of roughly 1,500 papers, an order of magnitude higher than his most prolific and famous colleagues. Of these roughly 1,500 papers 507 were co-written.

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gb14 TIL that in China it’s illegal for two ghosts to marry each other.
QGG6 TIL Andy Warhol, mentor and manager of The Velvet Underground, wanted their debut album to have a built-in crack, so that the line “I’ll be your mirror”, from the song of the same name, would repeat infinitely on a record player until the listeners moved the needle themselves
v19dD Today I learned there is a tortoise named Johnathan that is at least 188 years old and still doing well
QoxE TIL that the original ketchup was a fish sauce and based on the Chinese word for that sauce, and it turns out that in Chinese, “ketchup” also happens to be a homophone for “tomato sauce”, which is what ketchup became.
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