"Aerospace professionals do no indulge in assigning blame ".............Good grief, tell us which joyous planet you live on ! My 40 year career and well over 20,000 hrs as a professional pilot have convinced me that the blame culture is rife. Everyone seems to want a scapegoat in order to shift the blame. Sometimes, just to place a situation in a box and close the file. Indeed, I started my career in 1965 laughing at the phrase "Not me Guv, I'm electrics !" ! The AF prang is not classroom holes in cheese lining up. It is inadequate pilot training, inadequate airmanship & the armchair computerised technology favoured by modern aircraft designers. Damn, just argued myselef into lining up holes ! Look, get back to proper, selected, pilot training & teach the guys & gals at the sharp end to FLY out of problems. Avoid thinking inside the box. It will kill you.