Dozy
I also said that an HUD was not necessary for stall detection and recovery - I certainly did not say that an HUD would not be useful under certain circumstances. But in every circumstance I can think of an HUD falls definitively in the "nice to have" category rather than "essential".
I tend to agree.
BOAC: well said, in re the mountain of published material from the shrinks and psychologists. Some one must still "do it" in terms of "do it" being "fly the machine."