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It is amazing in some ways and in others not so much. We find it amazing because we are living in houses with electricity and plumbing etc. and see it as a step way back. Cultures less dependent on technology can make these transitions more easily. Sounds like they had plenty of food and weapons to hunt with. Of course the kid ended up with no teeth just like primitive cultures everywhere. This factor drastically reduces caloric intake and does the same for efficiency in the field creating a downward spiral.