There is none so blind as he who will not see. There is none so dumb as he who will not think.One of my serious boyfriends used to say I was smarter than him. And yet he's the one that made the big bucks. Same career path but he always made more money. Where he wasn't smart was having insight about people. He was plenty smart enough to do the work.
I thought his main intelligence deficit was that he apparently never voluntarily read a book in his life. So he didn't have any literary references or anything. And every one of his women were big readers.
One of those is mine.