Realistically, I think most are able to tell that what Bear does requires both specific skills and a special kind of crazy

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Outdoor skills and experience aren't needed to realize the risks involved in his adventures; just a modicum of common sense. For those incapable of this level of discernment, I don't blame the show; they're as likely to harm themselves trying to mimic "Adventures of Huckleberry Finn" or "My Side of the Mountain" as they are "Man vs. Wild."
I'm not a hardcore fan, I've seen a few shows and while I've found them entertaining I tend to use them as an example of what not to do in a survival situation, but my opinion of him has really gone up since I read his book "Living Wild." Its a good book about fieldcraft and living outdoors that he wrote as the UK Chief Scout and dedicated to Scouts worldwide.