What is the true responsibility of the First Officer? I always thought it was to assist the Captain. Just curious but a 600 hour Flight Instructor cant do this. I know the days of Gear up, flaps up, shut up are over but when it comes down to it what more does that FO really need to do. The next 900 hours or so is his time to learn from an experienced captain so when he moves over to the left seat he is ready. Is this the wrong way to look at it?