I googled the amount of people that lived on earth throughout its entire history, it’s roughly 108 billions. If I take 1 person and multiply by 2 for each generation of ancestors, at the 37th generation it already outnumbers that 108 billions. (it’s 137 billions). If we take 20 years for 1 generation, it’s only 740 years by the 37th generation.
How??
(I suck at math, I recounted it like 20 times, got that 137 billions at 37th, 38th and 39th generation, so forgive me if it’s not actually at 37th, but it’s still no more than 800 years back in history)
In: 1391
Once you go back far enough in time, everyone who’s alive now is descended from everyone who was alive back then (and had children who had children who had children etc.) in multiple different ways. We’re all inbred but in a way that’s socially acceptable and doesn’t cause health problems.
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