mm43,
Thanks for correcting my grammatical error (the extraneous "if"). I'd reread the post a couple of times, but, as the author, I completely missed it. I think there's an analogy here to the possibility of pilot over-familiarity with their current situation leading to oversight of obvious inconsistency. But I won't go there
In any case, your observation about the importance of human - automation interface has sparked further thoughts, which I don't have time to put down now, but will expand upon tomorrow.