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It was written during the 1970s that 75% of the people who had ever been born were alive at that moment. This was false.
Assuming that we start counting from about 50,000 B.C., the time when modern Homo sapiens appeared on the earth (and not from 700,000 B.C. when the ancestors of Homo sapiens appeared, or several million years ago when hominids were present), taking into account that all population data are a rough estimate, and assuming a constant growth rate applied to each period up to modern times, it has been estimated that a total of approximately 106 billion people have been born since the dawn of the human species, making the population currently alive roughly 6% of all people who have ever lived on planet Earth.
Others have estimated the number of human beings who have ever lived to be anywhere from 45 billion to 125 billion, with most estimates falling into the range of 90 to 110 billion humans.

World Population: Past, Present, and Future


Growth Rate


World Population Density (people/km2)


World Population Milestones

  • 2024 — 8.1 Billion
  • 2037 — 9 Billion
  • 2058 — 10 Billion
This is why the claim that "everyone dies" fails a standard statistical significance test.
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It only fails if we consider 'everyone' to mean the human species. Some people achieve immortality, but that's a topic for another post :)
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If you select a random person from the entire history of humanity, there's a greater than 5% chance that person has not died. So, the hypothesis that everyone dies fails the standard test.
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I hadn't thought of it like that, thanks for pointing it out.
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What? I don't know how to say but what is your ground of that 5%. You can't say it for the whole human race, the same 5% won't ever return.
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stackers have outlawed this. turn on wild west mode in your /settings to see outlawed content.