Throughout human history parent child reproduction has been taboo. Cousin marriage common. Universal. Only need 20-50 to max 200 thru most history. And no more than 2500. Humans did fine with far lower population rates. Example: people get dumber and uglier in urbanization.
Source date (UTC): 2019-10-10 01:46:40 UTC
Original post: https://twitter.com/i/web/status/1182110164855463936
Reply addressees: @Protagoris7788 @FaithGoldy
Replying to: https://twitter.com/i/web/status/1182100595047428102
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Original post: https://twitter.com/i/web/status/1182100595047428102
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