I've met enough folks I thought were smarter than me to be pretty humble about it, of course, humility is one of my many great traits.
My neighbor here is a retired physics professor from Tech, PhD Harvard, postdo Oxford. I have zero understanding of his research field, he doesn't talk about it.
There are two PhD economics professors down the hall, nice folks, he's from Georgia, she's from Mass. The other Georgia, which is not what they call it.