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TIL about Chang Yŏngsil, born a slave, he rose to become an accomplished scientist under Sejong the Great—but was later exiled after a royal palanquin he was ordered to build broke while carrying the king.

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lo4kA TIL that ampersands are useful for describing parings in a list, e.g. "For dinner, I had steak, peas & carrots, and mashed potatoes & gravy."
oRwBo TIL in 2010, McAfee deployed a defective update to their corporate customers that took critical devices offline and required manual work to remediate. Founder and CEO of CrowdStrike, George Kurtz, was CTO of McAfee at the time.
REr4 TIL: The Bali public holiday “Day of Silence” (Nyepi) requires all tourists to be imprisoned in their hotels for 24 hours. No one is allowed on the streets, and could be arrested by Traditional Police. All businesses including the airport, ATMs, and TV broadcasts are shut down.
ZoRv TIL the Freemasons of the UK and Ireland donate Teddy bears to pediatric A&E departments to be given to distressed children. To date they have donated one million bears in the UK and over 85,000 in Ireland.
a4RM TIL in 1995, when looking through the manuscripts of Carl Koller at the Library of Congress, a German historian found a small envelope of cocaine with the note: “Remainder of the first dose with which I made my initial cocaine experiment in 1884”