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TIL studies have shown that the achievement gap between blacks and whites on many standardized tests disappears when the subjects are told that the tests do not measure intelligence or IQ.

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wL66M TIL In a scene of Jojo Rabbit (2019), “Heil Hitler” is said 31 times in one minute! According to writer/director Taika Waititi, he wanted a funny moment, but also wanted to illustrate how ridiculous Nazi protocols were.
yQbg8 TIL of Pheasant Island, which for over 350 years switches countries every six months between Spain and France
0arR TIL of William Adams, the first Westerner to be officially given the title of “samurai” by the Shogun of Japan, renamed Miura Anjin.
e0Ak5 TIL that plants respond to stimuli as intelligent beings. When researchers played an audiotrack of caterpillars munching on leaves, plants secreted chemicals to make their own leaves more resistant. They can also sense gravity and the presence of water, and produce their own neurotransmitters.
OGLx4 TIL that the names for Wales, Walloonia, Cornwall, Gaul, and many more, are related via one proto-germanic word meaning "foreigner"