It is true that Grylls occasionally says "watch your footing here, guys" when he's needlessly climbing down the steepest part of a cliff that he climbed for no good reason that I could ever figure out in the first place. The "guys" are clearly the camera and sound crew. So I guess they can argue there was no concealment and hence no intent to deceive.
IMO it's entertainment, not education. Move the show from the Discovery Channel to Fox, etc., and most of my gripes go away.
Frank2135
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All we can do is all we can do.