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View Diary: Sometimes They Even Talk Alike (190 comments)

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  •  Having had a child tested (0+ / 0-)

    Being able to distinguish between a blue and a yellow object of the same intensity (would show up as the same "gray" object in B&W) is not the same thing as only being able to tell if an object is dark or light.  The wolf "rainbow" doesn't mention black or white for the same reason ours doesn't, because black is the absence of light, and white is a mixture of all light spectra.

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