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TIL in 1940 only about a quarter of Americans who were 25 or older had completed high school education.

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dAGE TIL that there are mathematical objects with non-integer dimension (instead of “2D” or “3D” the objects might be “1.58D” or “0.6D”)
415R TIL that MIT students designed an application that will randomly generate a nonsense academic paper; one of these generated papers was actually accepted to the 2005 World Multiconference on Systemics, Cybernetics and Informatics.
OoPZ1 TIL octopuses have been observed acquiring shiny and reflective objects and planting them around their homes in the sea bed like a garden. The song “Octopus’s Garden” by the Beatles was inspired by the captain of a boat informing Ringo Starr of this fact while on vacation.
EeXo TIL One in four cowboys in the old west were African American.
e0LD4 TIL that in WW2, the Italian submarine “Leonardo Da Vinci” torpedoed the troopship “Empress of Canada”, while on a return journey. The ship sank and half of the resulting 392 deaths were Italian prisoners of war.