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TIL Critical Periods: Periods of time where an organism's brain is extremely malleable and sensitive to stimuli. If the organism doesn't receive the appropriate stimulus during this critical period to learn a given skill- it maybe difficult or even impossible to develop certain associated functions

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loNbA TIL that in 1984, the Back to the Future production designer actually built the Hill Valley set to appear several years older than 1955 because the belief at the time was that making a period film in 1984 that was “right on in ‘55” would look “a little too new.”
ANDVw TIL of the first adult themed cartoon "Eveready Harton in Buried Treasure". Exclusively screened at a party for animators, the short was created by 3 of the major animation studios of the day, but because no US film lab would touch it due to its risqué content, the film had to be developed in Cuba.
lL17 TIL The Holocaust memorial in Berlin in coated with a special anti-graffiti chemical. The company that produced this chemical was the same company that produced Zyklon B during the war.
DQn8J TIL The town of Dish, Texas was renamed in 2000 as part of an agreement with the cable company and provided residents free TV service and a DVR
dLn8 TIL that when conjoined twin Daisy Hilton died, her sister Violet remained alive and attached to her for several days before they were both found dead.