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TIL that the first aircraft autopilot was developed in 1912. The autopilot connected a gyroscopic heading indicator and attitude indicator to hydraulically operated elevators and rudder. It permitted the aircraft to fly straight and level on a compass course without a pilot's attention

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y4Dp TIL Emerson Moser worked for 37 years for Crayola, making 1.4 billion crayons. After retiring, he revealed he was colorblind.
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