Climbing the Walls

If you flew to the center of every geographic area, you’d think there were dozens of unique races in the world. But if you walked, you wouldn’t understand the concept. The changes in color, face shape, hair, lips, eyes, etc. are so gradual — in every direction — that it would become obvious to you that we are all the same race. You’d have to be a strong swimmer and climb a lot of mountains, though. Which is why we think there are unique races; the mountains, rivers, lakes, oceans and other geographic separations tend to keep people in one…

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