Want to know why Donald Trump repeats sentences? This is why Donald Trump repeats sentences.

Of all the impressions of Donald Trump I've seen or heard in the last few months Anthony Atamanuik's is the best. It's so good that it's got this unknown improv actor his own show on Comedy Central.

What impresses me most is that Atamanuik has worked out the great truth about Trump. He's a TV personality. Like all TV personalities he only exists when he's being televised. Like all TV personalities he only believes in one thing, which is the thing that appears to be going down well at this particular moment. When he says things it's clearly the first time he's thought them. Which is why you can observe him hearing them coming out of his own mouth. They're clearly as fresh to him as they are to us. And as soon as he's heard himself say something which sound OK to him he repeats it.

There are two reasons for this. So that he can enjoy the sound of it and also give his mouth time to prepare the next thing to say.

Atamanuik explains the mechanics of his impression to Stephen Colbert here.