Carson is a world-class surgeon trying to convince whatever subset of the Republicans (a) can decide the outcome of the primary and (b) aren't already secured by Trump.
He probably says whatever nonsense he thinks will please rednecks with a 90 IQ and an sinking feeling that "their" country and its core values are being pulled from under their feet.
And I can understand if he's a hard time empathising with people who think that >6k years ago, when pyramids where built, the Earth didn't even exist.
TL;DR: I think/hope he's failing at understanding plebeians, not Life. It might be wishful thinking because I don't want to live in a world where someone could be both so smart and so dumb.