JD,
Why is is that when a flight crew is given a climb/descend instruction, the new level is cross checked between pilots?
Why is it that when a new pressure setting is given, the new setting is cross checked between pilots?
Surely you're both intelligent, resourceful, highly trained people, who would not get it wrong? Surely the handling pilot can be assumed to have heard and entered the correct informtation....Waste of time this cross checking lark, isn't it?