"8. When accidents happen, it is the choice of the diver who made a stupid mistake. (Human factors research from aviation, nuclear and oil and gas would show this might not be true.)"
Recommended slight correction in italics. For a particular accident, it may be absolutely stupid decision-making. The human factors research from events has shown that many events resulted from logical decision making from the perspective of those making the decisions based on the information and training they had at the time. (Which is pretty much what you are saying in other parts of your original post(s).)
But it doesn't preclude events caused by stupid decisions (e.g. conscious decisions to violate one's explicit training.)
Recommended slight correction in italics. For a particular accident, it may be absolutely stupid decision-making. The human factors research from events has shown that many events resulted from logical decision making from the perspective of those making the decisions based on the information and training they had at the time. (Which is pretty much what you are saying in other parts of your original post(s).)
But it doesn't preclude events caused by stupid decisions (e.g. conscious decisions to violate one's explicit training.)