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6mwJ TIL a researcher in the 1970s blindfolded participants and told them they were going to play tug-of-war against another team. When they were told they had 3 others pulling with them, they pulled 18% less strenuously than when they were told they were alone. The effect is now known as social loafing.
609m TIL that the Soviet Union refused to host the 1980 Paralympics, stating that none of their citizens had disabilities.
pxBG TIL that the popularity of pizza is so recent, than in 1950, a lawyer had a witness explain to a jury what it was