Tell you what, come back when you have a couple of years of flying every day. Tell us then, whether you have ever given the correct response to a checklist item when in fact the switch, control, whetever was not in the correct position. If you say you haven't you either a) are dishonest, or b) of such poor situational awareness that you have never caught yourself giving the correct response when the item was incorrect.
If you think you're immune to this phenomenon, it's becuse you just lack the experience.