Showing up with a closed mind can take a myriad of expressions. It can show up as authority, expert superiority, bullying, narcissism, zero sum competitiveness, adolescent indolence, parental rigidity, dogmatic intractability.
The last thing we should assume is that it is an indication of intelligence and competence. This frees us up to show up in ways that cause them to feel understood. Only in this space could they possibly venture out into the vast unknown.