I was a real junior fo once, the most junior in the company.
I knew !!!!.
I got better though and came the day that I knew more than the new Captains that I flew with. That was annoying but, I kept my trap shut, as best I could, and kept on learning but with a much wareyer (sp?) eye on events.
Later on (much later on) I got my LH job and I'll tell you this one thing as a good ex FO turned Capt.
Listen to your FO. You'll be glad you did.
Here endeth the lesson.