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TIL fragments of porcelain from spark plugs are so effective at breaking windows easily and quietly, that they’re known as ‘Ninja Rocks’ and listed by the State of California as burglary tools.

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ew94 TIL that incompetent people don’t know they’re incompetent and completely overestimate their abilities, while truly competent people are filled with doubts and often underestimate their own abilities - it’s called the Dunning Kruger effect.
exZ5 TIL that when Martin Scorsese read the book Wiseguy, which he would eventually adapt into the classic mob film Goodfellas, he called author Nicholas Pileggi and said, “I’ve been waiting for this book my entire life” to which Pileggi replied “I’ve been waiting for this phone call my entire life.”
Oo0w6 TIL, that the lead singer of Boney M. (Famous for, among others, the song Rasputin) died on the anniversary of Rasputin's death, in the same city Rasputin died.
KOGK4 TIL In Japan women give chocolate to men rather than the common-place tradition of men gifting women with tokens of love. This is rumored to be a tradition which originated from a translation error of a chocolate company during the initial campaigns marketing Valentines Day
BggDy TIL that cancer can be directly contagious in dogs, hamsters and Tasmanian Devils