SA
I used to fly with a guy, brand new $750k, glass cockpit, full Avidyne, full the lot. Zero ability, zero SA. It was a truly remarkable experience 'flying'with him. Analysis showed that he was actually scared, not only of the machine, but the superb avionics, the experience.The aircraft is 3 years old, and has TT of 90 hrs.
He was obsessed with where he was, his 'situational awareness',as he used to preach to me, and used to sit with the maps on his knee, with more information in front of him than the average 747-400 driver.
He never knew where he was, despite the moving maps, the information overload. He also used to argue with me,in flight, that I paid little attention to where I was, never realising that at every momentt, every second, I knew exactly where I was, and of his limitations. We do not fly together anymore, after he panicked in heavy IMC, gave the craft to me, and I flew it on instruments, from the right seat, with all the 'glass dials'on his side. A sobering moment. Never happened again.
My point, even with the highest levels of GPS moving maps, autopilots, glass cockpits et al, UNLESS, as previously posted, excellently, in some cases, SN3GUPPY, SA, is all surrounding, all consuming. Every aspect of he flight.