Okay, so we all have two parents, four grandparents, eight great grand parents and so forth..and each of these generations more or less lived around the same time. The simple equation to find out how relatives you had that existed in that generation is just 2^n, with "n" representing the generation.
Assuming then, that each generation is a very broad 40 years, then 1200 years ago you had over one billion people more or less living in the same generation (2^30 = ~1 billion). How is this possible? The world didn't even consist of one billion people until relatively recently ago.
Of course there is bound to be overlapping, with distant relatives giving birth and all..but this ~1 billion figure is just for ONE person. When you consider how many ancestors the 6 billion people people here on earth have, it's mind boggling.
Assuming then, that each generation is a very broad 40 years, then 1200 years ago you had over one billion people more or less living in the same generation (2^30 = ~1 billion). How is this possible? The world didn't even consist of one billion people until relatively recently ago.
Of course there is bound to be overlapping, with distant relatives giving birth and all..but this ~1 billion figure is just for ONE person. When you consider how many ancestors the 6 billion people people here on earth have, it's mind boggling.
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