Back to the original thread:
None of my 3 rating courses dealt too heavily on the 'blame' side of things. It was more a case of "If you do it right, and how you were taught, then you're going to be cast iron anyway".
If anything I'd say almost the opposite applies in the civil world to the military world. Rather than "Get it on the tape" the attitude is "Keep it off the tape unless it's appropriate". That's a far better way to work in my opinion - if it's not needed - shut up!
Duty of care is there, and always will be, but providing you work sensibly, rather than constantly trying to cover your backside, then you tend to find the regulator is your friend, not an enemy to be wary of. It's as NikNak says - practical application is the key,with the books as a guide, rather than rigid, inflexible application which will, sooner or later screw you up because you then lose the ability to think 'out of the box'.