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TIL Most authors in the Golden Age of Detective Fiction (1920-39) agreed to a set of “Ten Commandments,” which banned lame plot devices like secret twin brothers and hidden passageways.

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P4yZ TIL Shaquille O'Neal, the genie from Kazaam, is also known for a career in basketball.
rRjoo TIL about the Crittenden Compromise, a proposal to enshrine slavery to the U. S. Constitution and make it unconstitutional for future congresses to end slavery. Opposed by Abraham Lincoln and rejected by the House and Senate, it failed to avert the Civil War.
R5Dl9 TIL - The device reconnaissance aircraft use to measure the yield of a nuclear weapon is called a "bhangmeter."
QJk1p TIL of the Bronze Age collapse, in which incredibly rich, powerful, advanced civilizations, dependent on complex trade and agriculture, vanished in the span of a human lifetime.
OoEAa TIL the Lockheed SR-71 Blackbird set the world record for the fastest air-breathing manned aircraft in 1976 at 3,529 km/h (2,193 mph), a record which still hasn't been broken in 44 years