6 years is enough time to see what develops.
Unfortunately, Mr Prescott displays the posture and verbiage of a man who talked the talk but knows at this point he can't walk the walk.
I like most people had hope he would turn the corner and become a top tier QB in the NFL. He hasn't and he won't. This is not a bash Mr Prescott post...he is what he is...a decent QB who can play lights out at times whilst not so good at other times. Unfortunately, I too question his mental capacity to process things quickly...(ie) like Mr Burrows...that young man process things very quickly and throws a beautiful ball. The two are worlds apart in that department and its very noticeable.
Guessing Mr Prescott will be the QB of the Cowboys for a few more years so the roller coaster should continue.
Go Cowboys!