Not really disagreeing with the main thrust of your comment, but there’s also some selection bias at work. Uncontacted tribes will tend to live in the least pro

Not really disagreeing with the main thrust of your comment, but there’s also some selection bias at work. Uncontacted tribes will tend to live in the least productive spaces, since more productive spaces would have already been colonized by modern society. I think this insight comes from Jared Diamond’s The World Until Yesterday, but I’m forgetting.