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TIL - Giant Iron Balls were rolled through Paris’ sewers to clear blockages.

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p1wZ TIL that most languages have a bias against left-handed people. Left is derived from ‘lyft’, meaning weak. In Dutch, 'Link’ means cunning. In German, 'link’ means questionable. In Mandarin, it’s zuô, meaning improper, and in Turkish the word for left is sol, which can mean both 'die’ and 'ill’.
9PBp TIL lead shot used to be manufactured in tall “shot towers,” where molten lead was run through a sieve and dropped from a great height to produce perfectly spherical balls. Many of these towers still exist.
rNXEd TIL because he Monty Hall Problem is often worded ambiguous, leaving some loopholes, it is better do not switch doors when you play the game with the actual real Monty Hall.
x6XZ0 TIL the sack of Constantinople in 1453 and subsequent closure of the Silk Road by the Ottoman Empire was a main motivator of Europe to seek a western route to Asia
O01a TIL: The Velvet Ant (“Cow Killer”) is not an ant, but actually a wingless wasp which can squeak