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givesomefucks ,

Cats are traditionally thought to be dichromats, as well.

And humans usually have three, but sometimes it’s two, and even rarely 4…

With that much variations (including other ways) it’s hard to say human eyes are optimized for any condition.

There are very few examples of things in nature that are truly optimized for all of its environment.

Humans are just too widespread with too much variation to say we’re optimized for anything.

We just have too much in species variation.

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