[QUOTE 4135740, member: 259"]For 1 and 2 you're quite right, but most of us have done stupid things gong from one to another. I usually commute on a hub gear bike and I have to think twice.[/QUOTE]
Yep. Anyone who thinks this is simple probably doesn't switch between shifter types very often. I mostly use a single twist-shift at the moment (not my favourite), but I've also a SA trigger (my favourite), a rapidfire and several friction shifters (best derailleur shifters IMO). The lack of tactile "which gear?" feedback on rapidfires and STIs sucks, as does the lack of standing shift on all derailleurs.