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115

TIL the International Standard Book Number (ISBN) was invented by British retailer W H Smiths because they were moving to a computerized warehouse in 1967. It was approved as a ISO standard in 1970.

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j6JDp TIL there's plastic in my blood. A lot of it.
mLOM TIL that you can estimate Pi using a shotgun, with the Monte Carlo approximation
PJWJ TIL that before being burned at the stake in 1600, Giordano Bruno theorized a universe that was infinite, and that stars were really distant suns.
KrmG TIL that the person who plays Happy on Sons of Anarchy, David LaBrava, was not an actor but a Hells Angels member brought in as a technical advisor. He was eventually cast as Happy and by the end of the show, he had his name in the opening credits.
0101 TIL that the dentist who pioneered the use of laughing gas became addicted to chloroform, threw sulfuric acid over two prostitutes, was sent to prison, and committed suicide with his shaving razor