› added 3 years ago

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TIL that no one has ever measured the one-way speed of light. In fact it is undefined. All measurements of light speed are done using two-way (mirror) setups. It is entirely possible that light travels at c from A to B, and instantaneously from B to A, for a round trip speed of c.

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x6eZ7 TIL that physically acting out your dreams (loss of REM sleep paralysis) is >80% accurate at predicting future brain maladies including Parkinson's, Lewy Body Dementia, and ALS
xVgAw TIL of Catharism, a Medieval Christian movement in which the New Testament God was the 'good' god and the Old Testament God was the 'evil' god, aka Satan. They were heavily persecuted and were the recipients of a crusade
yV8wV TIL that Dracula was heavily inspired by Henry Irving, Bram Stoker’s employer. Stoker was close friends with Irving, who was described by others as “a self-absorbed and profoundly manipulative man.”
Pk4n TIL that despite dying in 1976, billionaire Howard Hughes (THE AVIATOR) had no living will and his estate was not fully dispersed until 2010, 34 years later
yQkjJ TIL about the IKEA effect which makes people think anything they make themselves has increased value.