And what happened to the infallable two pilot system, where every move is checked by the other crew member? Didn't work did it? And the same thing happened in the westwind crash some years ago. The cross check did not work.
People are human, and humans are influenced by many factors, some of which may be irrellevent, distracting,or incorrect.I have no wish to denigrate the pilots concerned, but I get angry when I read of "quality of training", Quality systems etc. etc.
That stuff is for the military. They have to think they are better than anyone else. It's their job.
But the rest of us are supposed to be able to think, and dael with facts. Not waffle about "quality training"