Got promoted to senior four months ago and still Google things a junior on my team already knows

Title changed, the gap in my head didn't. Had a junior explain a git rebase edge case to me last week that I genuinely didn't know, and my first reaction was embarrassment before I caught myself. Nobody expects a senior title to mean you know literally everything, that's not actually what the title is for. Still working on believing that instead of just repeating it to myself after the fact.