> "What stops you, I think, is a combination of not really believing you’ll get it and not really caring. Is that too harsh – or is it somewhere close to the truth?"

This reminds me of the curse of working with really good senior engineers. They already know the answers, they've already solved the puzzles. It can be very easy to just defer to them all the time.

If you are a senior engineer who really understands a system, you need to be conscious of this effect if you ever want someone else to start learning your system.