>All that's required for a trait to persist is that it benefits the pool. Or that it's less bad than whatever beneficial trait it's coupled to. Humans consume

>All that's required for a trait to persist is that it benefits the pool. Or that it's less bad than whatever beneficial trait it's coupled to. Humans consume a lot of water in order to shed heat. Our backs are pretty f-d up. Our brains waste a lot of energy and require a very long childhood. But on the flip side we're basically terminator compared to the African fauna our primitive ancestors hunted.