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TIL that cats knead different objects and for different reasons. When it kneads its owner, it's usually to return affection. Female cats might knead to signal that they're ready for mating. Cats in general might also knead to stretch their muscles or even mark their territories.

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wox86 TIL that in 1965, philosophy professor Hubert Dreyfus, a staunch critic of artificial intelligence, boldly claimed that a machine would never beat a human at the game of chess. It would only be two years before the outspoken scholar was himself checkmated by an MIT-developed computer.
4XLBR TIL: The vampire squid is not a squid or an octopus. It is the only living member of Vampyromorpha, an ancient cephalopod order which was a precursor to squids and octopuses
wpXM TIL a Buffalo Sabres goalies had his throat slit open with a skate. The only reason he lived was because of the team’s athletic trainer, that was a previous army medic, who put his hand inside the goalie’s neck, pinched off the severed blood vessel and waiting for doctors to arrive.
MNbm TIL The lyrics to Percy Sledge’s “When A Man Loves A Woman” were completely improvised by Sledge on the recording. He improvised so well that his the session musicians assumed that he had pre-written lyrics.
N7Eeb TIL that over 1 million people are buried on a small island in NY. Hart Island has been home to a confederate prison, asylum and “boys reformatory” dating as far back as 1869. Many of New York’s most vulnerable have found their way to this island and are laid in mass graves 3 caskets deep.