[rafterydj]

There has to be some language for what you're describing, because I've experienced similar perceptions of people. I've been on both sides of the "you don't actually understand what is being said until years later" discussions as well.

One thing I'd posit is that it might not be the people, but rather an ability or skill people can improve. It takes difficulty and focus and time, but it can be honed. I know this to be true; otherwise I would not be able to understand that which I dismissed years ago!

The problem with this, if it is an active ability rather than a person's inherent traits, is that it becomes impossible to recognize by any identifiable markers. I've often found that some of the most intelligent and "look at the problem from all angles" kind of minds often have very glaring blind spots (look no further than political subjects, for example). These blind spots manifest even in the most generally intelligent thinkers, that's what makes people human after all. So it can be said that good thinking is a very delicate thing, and it can be difficult to recognize against noise no matter who is speaking or what they are discussing.