Why are mentors such powerful learning tools?

I feel there will be moments in your career where you're going to have somebody who can just mentor you on something, and is sitting right next to you, and moments in your career where you need to look for mentorship in peers, in your network, in your own learning. And that's something that I do. So whenever I feel myself in a new area, I look into what are the best sources for me to learn what I have to do. I'm an avid reader. So I usually have books next to me on the topics that I'm covering, but nothing replaces doing the work, and having the confidence that you can go through the work and having people you can reach out to for advice or for nudges, or even to just avoid pitfalls, that's always something good. And they might sit in your organisation, but often they also sit outside, right? These are people that you've met along your career that you learn to rely on for advice for specific areas and to exchange advice with.