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TIL that there is a continuous line of doctoral advisor-advisee relationships going back from the present to the 1200s to a scholar named Kamāl al-Dīn Ibn Yūnus. He has more than 190,000 known academic "descendants", including Leonardo da Vinci and mathematicians Fourier, Lagrange, and Hilbert.

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d9Bd TIL that after LeBron James left Cleveland for Miami in 2010, his posters were marked down and sold for $17.41 in reference to the year the American traitor Benedict Arnold was born.
ANXM4 TIL that the senior executive vice president of Tencent, David Wallerstein, has a prog metal band in which he plays guitar and sings, and goes by the pseudonym DarWin.
neQDW TIL that a senior officer of the B-59 Soviet submarine, Vasili Arkhipov, averted the start of a nuclear war when he made the choice not to engage in combat with the US forces near Cuba in 1962
4E05 TIL that a gay Communist American was kicked out of his party for being gay, and later kicked out of a gay rights group for being a Communist.
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