“Trump is not trying to persuade, detail, or prove: he is trying to thrill, agitate, be liked, be loved, here and now”

It’s considered an indication of authenticity that he doesn’t generally speak from a teleprompter but just wings it. (In fact, he brings to the podium a few pages of handwritten bullet points, to which he periodically refers as he, mostly, wings it.) He wings it because winging it serves his purpose. He is not trying to persuade, detail, or prove: he is trying to thrill, agitate, be liked, be loved, here and now.

George Saunders, “Trump Days”, The New Yorker (11 & 18 July 2016), 50.