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TIL the inventor of the fidget spinner surrendered the patent in 2005 because she could not afford the $400 fee to renew the patent

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Yl6W TIL that Spain had a king who was so malformed due to incest that he couldn’t close his mouth and ended up destroying his entire dynasty
OoMo6 TIL the sunscreen rating SPF 15 means 1/15th of the UV-B radiation is not blocked. SPF 30 means 1/30th, etc.
nWjBd TIL A Carthaginian peace is when the losing side is punished to the point it is crippled. The Treaty of Versailles was described by some economists as a Carthaginian peace and there were plans to cripple West Germany after WW2 but the Marshall Plan to rebuild was chosen instead.
b9mLQ TIL In the 1960s, the CEO of Ampex wanted his employees to take LSD to improve their creativity. The board of directors said no, and then had to fire him after they discovered he'd snuck off anyway on a mountain hike with seven or eight engineers and given them LSD.
9YQ5B TIL about "Old Tom", an Orca that would help whalers kill baleen whales in exchange for the tongues and lips of the kills (the "Law of the Tongue")