[br_smartass]

"Upon this first, and in one sense this sole, rule of reason, that in order to learn you must desire to learn, and in so desiring not be satisfied with what you already incline to think, there follows one corollary which itself deserves to be inscribed upon every wall of the city of philosophy: Do not block the way of inquiry." — Charles Sanders Peirce, "First Rule of Logic"

What does studying people who "can't calculate a tip" has to do with understanding extremism/intolerance? Seems the cap fits.

Edit: I'll also add that I'm STEM and I don't agree that "binary thinking", "intolerance of ambiguity", etc are bullshit things, so watch out when you put a whole category of people in your camp. I'm rigorous in rationality and I've come to this stuff through my own questioning, watch out because the non-conservative can also put an aggressive rethoric to use.