pilots should never need to do such a thing in response to QRH directions - which must be clear and unambiguous.
BEagle,
if the QRH directions must be clear and unambiguous then there's not really a need for pilots to sit in the cockpit. They can be replaced by software, AI, Otto Pilot etc.
Having said that, I have been involved in incidents where thinking (shock, horror!) and system knowledge were required. Not all incidents and problems can be foreseen by design engineers. Decision making and interpretation are two of many factors that justify humans sitting and piloting airplanes (or aeroplanes if you wish
).