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TIL SpaceX Starlink satellites had to make 25,000 collision-avoidance maneuvers in just 6 months

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via reddit.com

jlKN TIL of John Willis, the only white member of Ping On, Boston’s Chinese mafia. He was introduced to the group by a young Asian man he saved. John later learned Chinese, became the boss’ chief bodyguard, and received the nickname “White Devil”. He is currently in a federal prison for drug trafficking.
5YDG9 TIL six-month old infants recognize when adults imitate them, and perceive imitators as more friendly. The babies looked and smiled longer at an adult who imitated them, as opposed to when the adult responded in other ways and approached them on their own.
QJBa6 TIL that the science of bite-mark comparisons, ballistic comparisons, fingerprint matching, blood-spatter analysis, arson investigation and other common forensic techniques have been tainted by systematic error, cognitive bias (tunnel vision) and little or no research or data to support it.
BrKQk TIL for 20 years, the wooden pieces for every Scrabble set in North America were manufactured in Fairfax, Vermont. FYI, in the US, the standard Scrabble sets had wooden tiles, and the deluxe ones had plastic, but in Europe, it was the other way around.
QJYL9 TIL the reason people with ADHD tend to experience sleep-related issues is because we have a different circadian rhythm than neurotypicals. Since society revolves around the 11pm-7am sleep cycle, folks with ADHD are forced to adapt to a foreign sleep schedule and are often more tired because of it.