I'm not sure if Foles is dumb or not, but I will say this. At times he has been a tremendous passer in this league. He was tremendous for Chip Kelly but Kelly was an idiot who thought he could do anything with any players, so he destroyed that roster including Foles. That playoff run last year was one of the top passing postseasons ever. Foles definitely isn't a guy who can play in any system and have success, or else he would have in other systems he had a chance in.
I'm not arguing this point.