I think we agree? The point is that a semiconductor fab (like a 747) is so highly automated that you don't need a bunch of low- or medium-skilled folks to drive

I think we agree? The point is that a semiconductor fab (like a 747) is so highly automated that you don't need a bunch of low- or medium-skilled folks to drive forklifts; you need a few high-skills folks to design, monitor, debug & optimize the huge system(s).