Posit: every time you interact with reality, in the long outcome, either you change all of reality, or none of it.
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interestingly you share no genes with a lot of your ancient genetic ancestors
That's right! You have exponential genealogic ancestors, far less genetic ancestors, & a relatively small number of effective DNA ancestors
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Im going to nitpick on the "exponential", this is only true for the first few thousand generations at most, due to population bottleneckpic.twitter.com/YYlcGyZ3M9
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Genealogical ancestors are exponential by definition. They are also highly redundant
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( from http://www.nature.com/nature/journal/vaop/ncurrent/full/nature10231.html … , so all humans might have only have about 5,700 ancestors 50,000 years ago
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Related: check out the book 'after the ice' - history from 20,000bc to 5000bc. Really weird stuff and consistently surprising.
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