This does not change the fact that at this time there was no warning of the ramifications of only one F/D being on when in this configuration, at the time of this crash those of us on the type were in fact interviewd by the BOE, As for the SFO crash, words fail me,the fundementals of aircraft handling are simply not being taught in many places, no amount of "magic" can solve this, certainly more "gongs and whistles" have not proved to be the answer.