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So the median human is precisely equally classy as any time-slice of our ancestors...even our common ancestors with bonobos and chimps? Or is classiness perhaps not on the short list of conserved quantities?
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Mobility = upward + downward mobility; downward is the other side of the coin So total upward mobility = downward mobility, and "mobility" is the magnitude of either, I don't see what's controversial here Obviously not everyone can increase their percentile anything
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value and wealth aren't zero-sum. as you create things and trade with others you're more likely to help push others upward. it only works when people create more than they consume.
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