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TIL The Title Song ‘I Love You’ from the children’s show 'Barney’ is used by interrogators to convince suspects to feel that life is meaningless, and to give up information.

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awpd0 TIL that, when asked to investigate the space shuttle Challenger disaster, Richard Feynman wrote a very critical report about NASA's safety policy concluding: "For a successful technology, reality must take precedence over public relations, for nature cannot be fooled."
d8wdd TIL In 1891, a stallion nicknamed "Clever Hans" wowed Germany by tapping out correct answers to simple math problems, including basic square roots. It was later discovered that he was deducing answers by reading the subtle, unintentional body language cues of the asker (the "Clever Hans Effect").
R7wbw TIL that the first paramedics were 25 African Americans in Pittsburgh, trained through the Freedom House Enterprises which was a program championed by an activist and the doctor who invented CPR, in 1967.
p8ygN TIL that the well-known 'ugly' blob fish (the one with the nose) only looks like that when they are pulled out from the high pressure environments such as deep beneath the oceans up to the surface. The pressure change results in tissue damage which makes the fish look like it's melting.
nWW9o TIL of Makibefo, a 1999 film adaptation of Macbeth directed by British director Alexander Abela, was filmed in Madagascar with just 1 technical assistant, had a cast consisted of all Antandroy people, an indigenous people of Madagascar, most of whom had never seen a movie and improvised everything.