Wait. Does the author offer any evidence for these claims: "What I learnt in my hunter-gatherer education has been far more valuable to my adult life than what I learnt in school, and I think others in my age group would say the same if they took time to think about it."
You have to dress "get off my lawn" up a little, or else no one will pay you any attention. The irony of "think of the children not getting enough outside time" coming from these guys, self included, who spend too much time commenting on Hacker News won't escape the astute observer either.
Just "thinking about it" proves this?