Comment by misternugget

I recently read a comment (I think it might have been on HN, but I can't find it) that said something like this: if you recently learned/mastered a topic, you're in a far better position to teach that topic than an expert, who's so deep into it, that they can't understand the beginners.

I wish I could find the source for this, because it was much better put, but that comment contains the gist of my motivation behind writing the book.