this post was submitted on 09 Sep 2023
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You want a colony consisting only of fanatics? Then 22 may be the number. It's going to be 22 very different types, and every one of them has to decide every day that this is going to last long...
If you want a colony consisting of normal people that lasts for long, then you need thousands. Humans need a lot diversity before they can be normal and stay healthy.
Considering humanity was knocked down to about 1200 people about 800,000 years ago and we survived without any technology to speak of, let alone genetic testing that would help determine maximum diversity, I'd say you might be surprised.
That assumes that everyone will be willing to have children with just about anyone, regardless of their personal opinion of them, and regardless of whether or not they even want children to begin with. You can't selectively breed humans without massive human rights violations.