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TIL that in Star Trek, Captain Kirk's phrase "You have the conn" has its origins in early battleships dating as far back as the 1860s; these ships were built with conning towers. A conning tower is a raised platform on a ship or submarine from which an officer in charge can issue commands.

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ANWLa TIL: Aaron Burr head a conspiracy to secede from the Union in the early 18th century. In the final months he would be outed by general Wilkinson who was a Co-conspirator with a history of treason.
9YRZm TIL in the medieval ages book owners would chain their books to the shelves and curse them to prevent theft
D1GJD TIL that Non-Muslims are forbidden to enter Mecca
Nb6P TIL it’s only called an acronym when you pronounce the abbreviation as a real word (ex. NASA). Otherwise it is known as an initialism (ex. FBI).
GbDE TIL a sub-generation exists called the “Oregon Trail Generation”, and consists of people born in the late ‘70s and early '80s.