whatilearned
Read more: https://www.bbc.com/future/article/20150727-what-are-the-limits-of-human-vision
TIL Tetrachromats (mostly women) can distinguish upto 100 million colours since they posses a 4th type of cone cell , apart from having the regular RBG cone cells
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TIL it takes 3 generations to implement a successful eugenics program
Finally a reason to implement a breeding program.