Graybeard:
I think you'll find that you've missed the point I was trying to make. This isn't about A v B, USA v EU, pilots v engineers or any of that rubbish.
There seems to be a point at which the human brain can only process so much information. In the case of Birgenair it seems that the PF was unable to determine from the ADI that he was nose-high and stalling because he was still focused on the initial false overspeed warning. In the case of AF447 it appears that the PF repeatedly pulled back on the stick despite this being the precise opposite action to what was required for recovery - his ADI was right in front of him and presumably working throughout. If this is indeed the case why does this happen?
(The information that the 757's design was changed to make it easier to switch air data after the Birgenair crash comes from the ACI/Mayday episode on the subject - it is possible they got it wrong...)