[rustybolt]

> I work with arguably some of “smartest” people on the planet, and even they struggle with basic concepts from time to time, as does everyone. There is simply too much information for any single human to know it all, and learn new things instantly.

This. Many programmers, for some reason, act like skill is a complete order; you are either more skilled or less skilled than someone else. In practice you are just familiar with different things, so if somebody doesn't know something that feels trivial to you, it just means he didn't encounter it in the same way.