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TIL about Wittgenstein's poker: During an argument, Ludwig Wittgenstein, brandishing a poker, challenged Karl Popper to name a single example of a moral rule, to which Popper replied 'not to threaten visiting lecturers with pokers'.

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Ypk77 TIL when Snopes creator David Mikkelson first began posting on Internet newsgroups in the late 1980s, he created the username "snopes" based on the surname of a family in a William Faulkner novel. Over time, "snopes" gained a reputation for his ability to thoroughly research and debunk false claims.
j71M TIL Americans spend more money on pets yearly than Germany spends on its entire defense budget.
j6Grv TIL: Video Games Have Shown a Strong Statistical Link to Improving Medical Surgeon Performance
Qjdp TIL There are approximately 3,000 tigers left in the wild. There are an estimated 5,000 tigers being kept as pets in the U.S. alone.
xXG7 TIL that in the 1700s, the Russian Empire had a black African major-general, governor and nobleman, who had come from Africa as a gift for Peter the Great, and who was also the great-grandfather of Russian author Pushkin.