Let me take a wild guess, the cultural thing that happened 8000 years ago was patriarchy...
(I'm not able to tell whether the research is legit so of course this interpretation has all sorts of limits.)
https://psmag.com/environment/17-to-1-reproductive-success
Why is this step necessary? mastodon.bida.im might not be the server where you are registered, so we need to redirect you to your home server first. Don't have an account? You can sign up here
mastodon.bida.im