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A comment on Tetrachromats: people who see colors invisible to most of us (2014). Parent comment

Re:Tetrachromats: people who see colors invisible to most of... by OscarCunningham on Sunday November 17, 2019 @11:30AM (#21558605)
The space of wavelength combinations is infinite-dimensional, so it's not going to be covered by vision using any finite number of types of cones.
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Re:Tetrachromats: people who see colors invisible to most of... by arketyp on Sunday November 17, 2019 @02:00PM (#21559379)
That’s why I said naturally occurring. If naturally occurring colors corresponds approximately 1-to-1 with trichromatic vision, that could explaining why a tetrachromat dreams of unreal colors and trichromats don’t.
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