You know how as an F/O you hate being told how to operate the aircraft by the Captain all the time.
Well Captains hate the same thing.
So instead of instead of trying to prove how good you are by quoting chapter and verse to the Captain, how about ask why he uses the technique he uses sometimes.
You will learn one of 2 things.
Either an alternative way of operating the aircraft, Or a way NEVER to operate the aircraft.