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TIL Richard Dedekind, who worked with Georg Cantor on infinite sets, was an exceptional mathematician but he never went beyond being a high school teacher in his hometown. Cantor wanted to enter University of Berlin but was prevented from doing so as his new branch of mathematics was rejected

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grovW TIL that Fukushi Masaichi (30 January 1878 – 3 June 1956) was a Japanese physician and pathologist in Tokyo. He was the founder of the world's only known collection of tattoos taken from the dead. He collected an archive of about 2000 "hides", which were later lost during World War II.
6EeWY TIL that although Nazi Germany sterilized or murdered 73-100% of all schizophrenics in Germany (about 220K-269K people), there were no long-term effects on subsequent rates of schizophrenia in Germany. In fact, post WWII rates were unexpectedly high.
4X4BR TIL that Poles (Polish people) once held the strong belief that they were the descendants of an old Iranian tribe
45Mg TIL about the Irish Goodbye, where you leave a social gathering without saying a word. It won’t be rude because they won’t even notice that you left.
KO6xa TIL There are approximately 7000 languages and one dies every 14 days