There are people who believe that members of NATO actually have to pay dues to the United States, and that it's only fair we mention it. There are people who believe that bilateral trade deficits matter in a global marketplace. There are people who believe Sean Hannity.
Honestly, until those people either die, read below the fold, or are challenged by people they trust—that enthusiastic 38% approval mark is going to stay right where it's at. It's fine to believe in things. But what we're up against is not so much a political plurality as it is a tribe that chooses belief over knowledge every time. People who prefer the short-lived sensation that perhaps nothing is as it seems over the dull stasis of finding, verifying, and knowing facts.