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TIL, William Harvey (1578-1657), an English physician discovered the circulation of blood when it was believed that blood oscillated in the body. For his idea, he was ridiculed and was called a "circulator". But after his death, his idea was accepted as a biological fact.

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P1QQe TIL the original theme song for Gilligan's Island wasn't a sea shanty, but a calypso theme written by John Williams.
J1y9m TIL that the state of Alaska has a secessionist party and that one of their members was the governor of Alaska from 1990 to 1994.
1apOO TIL That in 1966 in response to an attempt to ban To Kill a Mockingbird, Author Harper Lee wrote a scathing response letter to the Hanover County School Board, including a donation with her hopes that it be used to "enroll the (board) in any first grade of its choice".
lj7A TIL pickpockets will sometimes yell “someone stole my wallet” so everyone around them pats their wallets, revealing the pocket valuables are held in.
p8EGQ TIL toilet paper originated in China around AD 589 but was not commercially packaged until 1857 by New York entrepreneur Joseph Gayetty. It was marketed as “The greatest necessity of the age!”