I think anyone who spends any time in rural areas has seen plenty. Not just under or uneducated, but literally humans who might seem on par with a dog when it comes to understanding things or curiosity in general. I know you're trying to keep this light-hearted, but truth is, they often run rural areas and it's kind of dark (to me). I think the closer you are to suburban or urban areas, the less enlightened people are more likely to be forced into obscurity. Society just doesn't have a lot of use for people who can't be peers. The inverse is true in rural areas. More intelligent people are suppressed. I knew plenty of farmers who were intelligent or intelligent enough. They didn't socialize much. It's better to be under educated, you are more likely to get along. You don't see much creativity or art in rural areas. Conformity equals comfort and safety. There are, of course, socio-economic factors in rural areas as well, but art finds a way in even the most impoverished areas.

Go visit towns with a population under 1,000 and you'll find plenty.