411a
You can't have it both ways.
Either the JFK crew DID fly as they were trained with the resulting outcome or the DIA crew DIDN'T fly as trained with the resulting outcome.
A previous post of yours talked about "old hands". These were the same (now retired) "old hands" who initiated many of the training procedures in place at AA you now criticize.
Per your claimed training at Pan Am, did you learn anything from the guys in a PA B747, who ran into the departure end lights on takeoff at SFO (a result of a runway switch without recourse to the appropriate performance data with a different TO flap setting) and the subsequent evacuation cluster? I know I did!
Did you learn anything from the Tenerife accident? I know I did!
dd
still learning and still far from knowing it all.