While I agree with a number of the points he's making, there's a serious correlation / causation problem here. The claims: • Most people in America don't know

While I agree with a number of the points he's making, there's a serious correlation / causation problem here. The claims: • Most people in America don't know how to think critically. • People who think critically are literate. • People who are literate buy books. • Using bestseller lists is an easy heuristic to see who knows how to think critically. Obviously, his argument breaks down, in a number of ways. Perhaps people who like low-carb diets have more money that they can spend on books. Perhaps low-carb books have better marketing (I don't think they do ... just throwing that out there). Perhaps low-carb proponents feel that they're biased against by the media and by popular culture, and so they buy books out of solidarity (note the "Fireproof" movie and the urgency associated with supporting it by / within Christian groups). I'm not saying any of these are the case ... just that it was ironic that he was railing against Americans' ability to think critically, and then he laid out a string of fallacious arguments. You could push his argument further, and say that, because the Harry Potter books are at the top of the USA Today list, then the typical Harry Potter reader (whatever that is) is better at thinking critically than a low-carb enthusiast — or anyone else in America.