Why Is It Hard to Escape?

Men have a bargaining power advantage in summer because everyone is busy feeding their immediate families and chasing very dispersed resources. A lot of cultural norms specifically exist to avoid these c tic and dangerous power struggles, which can end in catastrophe for the winners as well as for the losers. If there's a physical fight, the man will likely win, but it's extremely dangerous to ever let it get anywhere near that point when you're all alone with only your immediate family. So it's hard to escape. And there isn't really any great place to escape too.