Tapper really isn’t that bright, is he.
Tapper is as dumb as a box of rocks. Dr. Carson was talking in simple, cogent phrases (like a parent talks to a child when explaining something to them), and by Tappers's comebacks, you could tell that those ideas just went "Whoosh!", right over his confusedly muddled head.
Whether that thickness is real or feigned, Tapper is still dumb as a box of rocks, because he is either knowingly or unknowingly missing the truth, and either knowingly or unknowingly working doggedly to get his audience to miss the truth too (if he has an audience).
God bless Dr. Carson.