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TIL that when Mt. Everest was found to be the tallest mountain on Earth at 29000ft (the estimate at the time), an extra 2 feet were added on top of the number because they feared if it was too round of a number, the public would think they had picked an arbitrary number.

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nKxd TIL When Ronald Reagan watched Back to the Future for the first time, he loved the joke about who was president in 1985 (Ronald Reagan? The Actor?) so much that he made the theater projectionist stop the film, roll it back, and play the joke again.
6lRW TIL that 5 scientists observed 60,000 episodes combined of 73 cows lying down to determine that: (1) the longer the cow has been lying down, the more likely the cow will soon stand up, and (2) once the cow stands up you cannot easily predict how soon that cow will lie down again.
QJ759 TIL that Walter Becker and Donald Fagen of Steely Dan recieve 100% of royalties and retain sole writing credit on the hip-hop single "Deja Vu (Uptown Baby)" by Lord Tariq and Peter Gunz.
D1GGp TIL that a successful ventroliquist's career ended when he switched from radio to TV as "his lips were frequently seen to move"
yQXnX TIL Paranormal psychic believers and skeptics showed no differences on tasks of memory distortion, autobiographical memory distortion, or working memory capacity. But skeptics consistently outperformed believers on several tasks tapping analytical or logical thinking as well as vocabulary.