Fair point BKdos, but wouldn't the more experienced pilot in the other seat catch the error? Is he not also qualified?
I've never seen the scenario play out in the sim, but I imagine the instructor would forgive the PF for calling out "GA Flaps". The PM would get scolded for actually doing it though.
I agree that SOP is written to cover less experienced pilots, but some degree of proficiency has to be assumed, right? The SOP doesn't say to adjust the temperature if it's too low, but somehow, we manage, right?