An intelligent person understands many things. That makes them feel so confident that they think they understand everything. Maybe one in a million they will misunderstand. They will never understand that. If you try to make them understand they will get annoyed.
In the end, if somehow they get it that they were wrong, that won't make them feel sorry. They will believe they were right, somehow the situation went wrong.
The truth is, the more you learn, the more you understand, how little actually we know...