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TIL IBM made the punch card systems the Nazi’s used to catalog people who were sent to the camps. Anyone who had a number tattoo was most likely assigned it from an IBM punch card system.

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ZWo TIL that Fred Perry, the last British Wimbledon men’s champion, also won the Table Tennis Championship, the only tennis player to ever do so.
KYgW4 TIL The cornea is one of only two parts of the human body without blood vessels. The cornea is the clear part of the eye that covers the pupil and other parts of the eye. It gets its oxygen directly from the atmosphere. The other part is cartilage.
JY4Ml TIL of a study which suggests melatonin, the hormone associated with control of our sleep-wake cycles, evolved 700 million years ago from our tiny oceangoing ancestors that would swim to the surface of the sea at twilight and then sink into the depths of the ocean in a sleepy fall through the night.
kJ1GB TIL of the Greek god Dionysus (created circa 1,300BC) had a mythology so similar to Jesus the two shared multiple nicknames, origin fables, death fables, "profession," and even being "a sacred king killed and eaten in an eucharistic ritual for fecundity and purification."
6ep7 TIL that wasabi was originally served with sushi and dishes with raw fish because it aided in killing harmful bacteria and parasites that could be present in raw seafood.