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TIL The U.S. is one of only a few countries that does not guarantee retroactive amelioration (reduction of prison sentence based on changes in the law)

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l7pmA Today I learned F1 cars can have their engines disabled wirelessly via IP connection
5Y7JP TIL there is a book called "Foundations of Mechanical Accuracy" that explains the process of how to get current tools from nothing. [PDF]
4kBw TIL each King in a deck of cards is based off a historical figurre
rNBoW TIL of the earlier War In Vietnam which was a success for Western forces. Combined British, Japanese and French forces defeated Ho Chi Minh, with the well experienced British forces having particular success.
KO6ER Today I Learned a Futurama writer with a PhD in applied math created a mathematical theorem just for the purpose of using it in a Futurama episode to expose young people to higher level math.