POBJOY - That is a great post and says just about says all that needs to be said.
I am not an aviation professional, but I have been reading aviation accident reports since 1968; I was 11 years old, RAF crew room used by my Dad, AEF VR pilot. The human factors are the most interesting and I missed my vocation in life. Sadly the one thing I have learnt over the years, is that lessons are still not learnt.