Any textbook or article on vision from the current literature contains the statement: “Human color vision is based on the existence of three types of cones, a red, a green, and a blue sensitive type”, or very similar such wording. There is no discussion, no question, just this simple statement of “fact”. With such an oft repeated and widely entrenched description of human color vision, there is surely no question that it is right. Or is there?
Books by John Medeiros
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