You can't know what those people are seeing. On Friday, 26 April 2019 23:14:56 UTC+3, Brent wrote: > > > > On 4/26/2019 10:12 AM, 'Cosmin Visan' via Everything List wrote: > > And what I argue for in the book is that if you are to see only 2 > > colors, those 2 colors will always be yellow and blue, because yellow > > will signify the very seeing of a color, while blue would be there to > > contrast maximally with yellow. > > > https://nei.nih.gov/health/color_blindness/facts_about > Blue-yellow > <https://nei.nih.gov/health/color_blindness/facts_aboutBlue-yellow> color > blindness is rarer than red-green color blindness. > Blue-cone (tritan) photopigments are either missing or have limited > function. > > Tritanomaly: People with tritanomaly have functionally limited blue cone > cells. Blue appears greener and it can be difficult to tell yellow and > red from pink. Tritanomaly is extremely rare. It is an autosomal > dominant disorder affecting males and females equally. > Tritanopia: People with tritanopia, also known as blue-yellow color > blindness, lack blue cone cells. Blue appears green and yellow appears > violet or light grey. Tritanopia is an extremely rare autosomal > recessive disorder affecting males and females equally. >
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