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by prennert
571 days ago
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People who ever lived on Earth is just over a magnitude more than were alive in 2020 (7% of all people every alive lived in 2020) [0]. But interestingly if you divide a light-year by 117 Billion (the number of people ever alive according to [0]) it comes down to about 80 000 km per person (coincidently 2x the Earth circumference). If the average life-span was 80 years, that would bring the daily travelled distance to 2.7km per person, or 5.4km if average life-span was 40. 5.4k is easily done in an hour (especially by people walking as their main mode of transport). So yeah, maybe all people that ever lived together walked somewhere between 1-10 lightyears together. So all in all, not that much compared to US airlines in the last 15 years. [0]: https://info.nicic.gov/ces/global/population-demographics/ho... |
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