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TIL of John Corcoran, a teacher who taught for 17 years while being illiterate. He struggled in the 6th grade and never learned to read or write, and cheated his way through college. At the age of 47, he finally learned when he was inspired by Barbara Bush advocating for adult literacy.

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OoRe TIL that there is a mathematical formula that when graphed, produces an image of the formula itself
R154 TIL some people have “blindsight.” They are blind due to damage in the brain’s visual cortex, but the eye and optic nerve are fine. They can’t consciously see anything but can guess their way through an obstacle course or guess the emotional content of a photo through intuition with decent accuracy.
BgEEe TIL Edison was not the one who promised Tesla a reward of fifty thousand dollars, who was referred to as "the manager". Basically, it's more of a joke than a promise.
kOk6E TIL: When interviewed, a 70 year old man, who was once a feral child that lived alone with wolves in the mountains between the ages of 7 and 19 stated "he was disappointed in human nature and wished he could return to the mountains and leave society"
x6X87 TIL that one of the worst droughts in recorded history occurred in Texas during the 1950's. Huge lakes and rivers dried up completely, grass nearly died out leading to massive dust storms, and 50% of Texas' farming industry was dead by the end of the decade.