> perhaps even with 4 cones instead of 3? You may enjoy reading https://en.wikipedia.org/wiki/Tetrachromacy#Humans https://en.wikipedia.org/wiki/Tetrachromacy#

> perhaps even with 4 cones instead of 3? You may enjoy reading https://en.wikipedia.org/wiki/Tetrachromacy#Humans https://en.wikipedia.org/wiki/Tetrachromacy#Humans It seems that we've found one woman who is actually capable of using this (ctrl-f for subject cDa29)