If the idea is to cement your knowledge by passing it on to others, I don't know what would be superior. In both cases you'd need to synthesize your learning a

If the idea is to cement your knowledge by passing it on to others, I don't know what would be superior. In both cases you'd need to synthesize your learning and put it in your own words. I do similar to the blog approach by writing thoroughly documented and demonstrated answers on Stack Overflow. Sometimes (including yesterday) I need to go back and review my conclusions. Yesterday, I was looking for whether I should change some raise statements or not. Since I concluded that the old statements are deprecated, I went ahead with the change, and it was approved as I submitted it. I've also taught in the classroom, but since I'm working from what I already know (and encountering things I've forgotten) I don't know that it's actually better. It's just different.