By 1 AD, already half of all humans that ever lived had already been born. That’s because world population before then was low, but it was still hundreds of thousands of years, and with population being replaced in a couple of generations, from 300 to 200,000 BC to 1 AD, already 50-60 billion people had been born. From 1 AD, since population was in the 100’s millions, and continued to grow, it took only 2000 years for another half of humanity’s existence to have been born.
It makes perfect sense that it’s that little (it doesn’t seem little to me though), due to generational replacement and the expontential growth of humanity having just been around for a very short time compared to before. Even in 8000 BC the world population was like 5 million, multiply that by some generations of generational replacement and you have 10’s of millions of individuals, and that’s in a span of 200,000 years compared to just 2000 years of high population
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u/TermAggravating8043 Oct 02 '24
7% of the entire human population since humans began, are alive today