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TIL that some cultures believe that sleeping with your head facing north is bad for you

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xV6xo TIL the caduceus symbol mistakenly used by many American medical companies is actually associated with thievery and commerce, the true medical symbol is the similar looking Rod of Asclepius.
Brb0x TIL, there’s a bunch of extremely useful punctuation marks that are barely ever used, such as the “Question Comma”.
5YnLP TIL about the Dunning–Kruger effect, which is "a cognitive bias wherein people of low ability suffer from illusory superiority, mistakenly assessing their cognitive ability as greater than it is"
dDl97 TIL a billionaire bought a California beach, blocked public access to it, and cited 1600s property rights to justify his actions. After years of lawsuits, the U.S. Supreme Court upheld a ruling that he violated state law, but the legal battle continues.
KYA5Q TIL Fern Gully is a real place in NSW Australia