What do all the great Quarterbacks have in common?

[RedThat]

Just curious.

I've been thinking this to myself lately and could think of one thing that comes to mind, excellent field vision. If I am missing anything, please care to add.

I've watched the likes of Brady, Montana, and Marino who were very productive and still managed to get by without superstar receivers. How? It had to be good field vision that enabled them to progress through their reads and make plays.

Good field vision goes a long long way imo. Without, I don't think there is much a quarterback can do? Which kinda worries me a bit about Cassel. I've been watching this last preseason game against the Ravens and Im still seeing bad reads from him. Im still seeing how his eyes just lock onto one receiver without managing to keep it on the entire field. I don't mean to turn this into a Cassel debate or anything, but he had this very issue last year and has me wondering, is this the one particular attribute that will prevent him from being great?

I think good field vision is a skill but not one that can be taught. You either have that or you don't. Much like speed. Can't teach speed to an athlete either. I can understand now when some people say his ceiling is limited.