A person can be unobservant without being unintelligent. Though I often agree with Moore, he presents things in a misleading manner. If people were not susceptible to having their attention directed, magic tricks wouldn't work:

http://www.youtube.com/watch?v=voAntzB7EwE

I would say he does numerous "tricks" with the medium, and therefore will never rely on what is presented in a Moore film to form my own opinions. (Anyway, why would I when I can rely on Slashdot, where every assertion anyone makes is picked apart for my reading pleasure? That way I don't have to be observant; I just need lots of time.)