Hi Chugalug
It’s best to avoid Cazatou when he introduces yet another irrelevant red-herring to the thread. It only encourages him to muddy the previously clear waters.
I am sure it has not escaped his notice that there exists a parallel universe where people climb onto airborne devices with reasonable confidence that purchasing a ticket will mean delivery to their destination alive. It has been established for many years that an independent accident investigation system designed to determine all the facts and produce any recommendations to prevent future accidents (with allocation of blame not in their remit) is the best system to improve flight safety.
I have not noticed an increase in the number of untried murderers or rapists at large resulting from the application of this principle.