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TIL David “Carbine” Williams, who helped invent the M1 Carbine, was a convicted murderer and created innovative gun ideas while in jail. He was convicted of the shooting of a sheriff who busted his illegal moonshine still. He was released after his family argued his inventions could help America.

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996m TIL diamond really has no value. De Beers created an ad that convinced generations of young men and women that diamonds are valuable and synonymous with love
GBN1 TIL - Eminem was an anonymous donor to a Detroit charity, giving 105k in one year. When it was brought to light that he was the anonymous donor, he matched donations up to 100k the next year.
E1DaP TIL That in the original Pacman, it was impossible to beat the game due to a bug that would occur on level 256 from a buffer overflow.
nxm7 TIL That if you were were exposed to outer space without a suit, after about 15 seconds, you would be blue, bloated, and in an unresponsive stupor, but not dead. If they got you back inside and gave you oxygen within about 90 seconds, you’d likely make a complete recovery with only minor injuries.
OG0Qa TIL that the longest running laboratory experiment in history, the Pitch Drop experiment, had its seventh drop fall in 1988. However, nobody witnessed it and its custodian, Professor John Mainstone, had stepped out to get a drink the moment the drop occurred.