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TIL that the bar tab of a 1787 farewell party for George Washington is still intact. “According to the bill… [The Founding Fathers] drank 54 bottles of Madeira, 60 bottles of claret, 8 of whiskey, 22 of porter, 8 of hard cider, 12 of beer, and 7 bowls of alcoholic punch”. The party had 55 attendees.

wLEA1 TIL that when dashboard lights were first used in cars they were called "idiot lights" because drivers were frustrated by the warning lights used in place of gauges, making it more difficult to detect issues early since they only activated after one occurred.
a8ORb TIL in 1979 researcher John Merritt placed a photographic memory test in publications across the US. He estimated that roughly 1 million people took the test & of that number, 30 wrote in with the correct answer. However, when he visited 15 of them in their homes, not one could duplicate the feat.
QNZjk TIL that in World War 2 Nazis used secret codes to communicate using a machine called the Enigma Machine which would use morse code but make it very, very difficult and there was a building in England where many people were recruited to work as decoders and it would take hours or days to solve.
nepmr TIL that Taiwan's navy operates a submarine still operational since 1945, making it the longest-serving submarine in the world.
GO1J TIL one hectare of land (2.471 acres) producing vegetables, fruit , and cereals, can feed up to 30 people. The same area, if used to produce meat, could feed between only 5-10.