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Andy in TX's avatar

When I saw a Snow Crash reference, my sense that you would be the perfect dinner companion jumped even higher!

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Roger Sweeny's avatar

For almost the entire existence of humans, our ancestors pretty much never encountered someone of a different "race". It would be very surprising if we evolved the ability to notice race specifically.

But we often encountered people from different groups who might do us harm and were, at the very least, less trustworthy than people in our own group. So it would stand to reason that we became sensitive to who was "with us" and who was not.

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