I doubt he is a genius or an idiot. What he likes is a balanced mind. So you can show him the dreadful consequences of the thing he wants to do and he wont care, regardless of how bad it is. This is what makes him dangerous (and potentially effective).
That's part of his point though, ain't it. It was apparently "balanced minds" that led to things becoming so bad that they elected *him*.
"Plenty of strikers can score goals," he said, gesturing to the famous old stands casting shadows around us.
"But a lot have found it difficult wearing the number 9 shirt for The Arsenal."