the amount of one person’s ancestors

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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)

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Anonymous 0 Comments

Google pedigree collapse, that’s what it’s called. Basically it’s why we are all technically related and we can go back far enough and have found “mitochondrial Eve” who is a relative to every single person alive today and known as the mother of all modern humans. There used to be a lot more inbreeding also.

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