A person can only have so much expertise, but if you can sell your ignorance and ability to root out answers, you’ll be employable forever, understood frequently, and relatable always.
Age, like all power constructs, (race, gender, class) encourages it’s own ignorance. To not know is a luxury of power. You don’t have to know Their Eyes Were Watching God. But I damn sure better know The Scarlet Letter. (It’s bad enough I’m slipping on Twain.) Age turns ignorance into a luxury, and worse, if you don’t recognize it as a luxury you start to think everyone is as clueless as you. And of course you’re clueless that any of this is even going on. It’s just a bad look all around.