They're very prone, in my experience, to believing that their explanations are ultra-rational, though, reality be damned. And to falling for arguments with the trappings of rationality, but deeply flawed premises or early steps slyly skipped so the castle's built on sand but looks like a perfect castle with all these crazy-tall minarets reaching for the sky (ahem, like a certain popular-online political & economic philosophy) and then treating everyone who doesn't agree that the castle's beautiful as irrational, probably-emotion-driven morons.