I'm tempted to think myself as a know-everything in front of my old foreign parents, but that is, of course, illusion. It turns out that I don't really understand what graduate school/PhD application/academia mean so thoroughly as I thought -- otherwise why would I feel anxious/uncertain/unconfident/imposter syndrome?
I take the application process more like a process of learning and thinking. It can be the same case for parents. We both need to learn, including learning to deal with things that you can't really learn.