You know, at first glance, Burke doesn't seem capable of complex thought processes, but he's really quite intelligent, isn't he? He only seems retarded because he's resolute and unwavering in his goals, and has a well-defined theory of right and wrong unlike most people.

...Or maybe I'm romanticizing him a bit.

Either way, it's clear that you can't pull the wool over Burke's eyes! (To say nothing of his bangs. Or is that a dead pumpkin?)