There are different degrees of ignorance. It takes a much greater level of ignorance to think that the Earth is flat than e.g. not knowing how semiconductors work. The "we're all equally smart/stupid, just in different ways" simply isn't true.
The “we’re all equally smart/stupid, just in different ways” simply isn’t true.
When I wrote, “We are all ignorant, just about different things.”, what I meant is even the most intelligent and well read of us have things they are ignorant of. For example, I can barely sew on a button, but a professional seamstress can make a beautiful gown before I learn to master a sewing machine.
Similarly, a person who cannot point out Africa on a globe can tell me the details of how his local barber shop is arranged.
I have found nearly everyone I talk to has interesting things to share, if I am good at listening.