› added 11 years ago

297

TIL of the Dunning-Kruger effect, that most people grossly over estimate their competence and expertise on a subject.

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40Kw TIL that during WW2 a Spanish man convinced the Nazis that he was a spy living in London, and fed them false information. This grew to him working for Britain with captured spies, creating a fictional network of other spies, and being awarded a medal from both Britain AND Nazi Germany.
Z86Qo TIL about Washoe, a female chimpanzee who was the first non-human to learn to communicate using American Sign Language. She learned approximately 350 signs.
eBnD TIL Gregory Scarpa, Sr. despised African-Americans so much, that he refused to get blood from a blood bank following an ulcer. He ended up contracting HIV from another italian mobster who donated his blood to Scarpa.
pYrvp TIL that out of 400-500 species of shark, the Sand Tiger Shark is the only one known to fart
R7Ry9 TIL The Mongols attempted to conquer Japan twice in 1274 and 1281. Both times they were thwarted by tyhoons which were given the name of 'Kamikaze' meaning 'Divine Wind'