[quote=@Kratesis]
It blows my mind that Trump can take out the deepest field of GOP candidates in living memory and Hillary's billion dollar campaign but some people still think he is an idiot. 
[/quote]

Cognitive dissonance is a powerful thing. I'm not saying Trump is necessarily smart because of these things (a lot of the people you mentioned aren't smart) -- but that gut instinct to say "He disagrees with me and I am smart, therefore he is not smart" is a natural human reflex we have to recognize.