I think it was the underlying dynamic that bothered him, not that particular problem, which led him to not forget it and still think about it. Smarts kids prob

I think it was the underlying dynamic that bothered him, not that particular problem, which led him to not forget it and still think about it. Smarts kids probably often have resentment when they first discover their teachers/elders whom they hold up to a naturally realistic high regard are less inquisitive or intellectually rigorous than they are (or hope to be). That sort of thing has a way of sticking in your brain.