It was so good to follow along because you solved the problems step by step. However, there were some parts that I was curious about sometimes that were skipped over. For example, when solving the last problem in this lecture, I had a feeling that the problem was solved before I could even figure out whether 'respective' meant 'each' and thus 'GROUP BY' was used. Still, I think you are one of the people who solves problems the most step by step, even though I have taken other lectures.