"I don't know, but I'll find out" is a skill set.
I think that it is largely missing because these days, most people have Google support and aren't face to face, so they aren't accustomed to feeling like they don't know something.
Too many people spend way too much time thinking about themselves instead of how they could better themselves.
Perhaps again it is because of a lack of social connection, therefore pushback on how they behave.