I believe there is a continuum of our own belief in our intelligence:
When we are children, we believe we know everything about a couple of things.
When we are teens, we believe we know more than our parents about everything.
When we are young adults, we believe we will know even more about everything.
When we are parents of children, they believe we know everything.
When we are parents of teenagers, they believe we know nothing.
When we are parents of young adults, we both believe that we know everything.
when we are older, we begin to realize that we really didn't know anything at all the whole way through the journey.