This episode made very little sense. Back in episode 7 "majority rule" it was established that John LaMarr is not an intelligent person. He was slow to understand his own obvious situation and even when he knew his life was on the line he answered questions with idiotic, childish responses. The writers attempted to cover this plot hole by saying LaMarr pretends to be stupid to better fit in. Someone who is smart would not keep up a facade that they are dumb when their life is on the line. He would not keep acting stupid when he knows he will die. It's hard to suddenly accept someone is smart when you've seen repeated instances of them being honestly dumb. I'm guessing the writers felt pressure about having a minority of low intelligence and tried to save face with this episode but it felt forced and out of touch with the rest of the show. I would love for LaMarr to be smart but he's already been shown to be the opposite even when he isn't trying to fit in.