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
Consider King Joffrey from Game of Thrones. If you go back two generations, you would expect four grandparents, but he only actually has two. His grandparents on his mother’s side and father’s side are the same two people because he’s an incest baby.
Everyone’s family tree is ultimately like that, except usually much, much less icky.
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