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TIL that a clean room used in chip manufacturing is thousands of times cleaner than a operating room. Chip manufacturing clean rooms have 10 particles per cubic meter while ORs allow 10,000 particles per cubic meter.

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XEVjj TIL: On 17 April 1955, Einstein experienced internal bleeding caused by the rupture of an abdominal aortic aneurysm. He refused surgery, saying, "I want to go when I want. It is tasteless to prolong life artificially. I have done my share; it is time to go. I will do it elegantly."
50G8 TIL that in America in 1960, 30% of all brides gave birth within 8.5 months of their wedding
OoE4a TIL there was a short lived British remake of the sitcom That 70s Show called Days Like These. Other than some name changes it was a word for word remake of the original.
mdlx TIL Apple Makes New Employees Work on Fake Products Until Apple Can Trust Them
R7MB4 TIL: Joseph Smith's wife threatened to practice polygamy until a timely and convenient commandment specifically naming her came from God.