1. It was great because the growth logs in between seemed to communicate with the teacher. (Recently, it was changed to a goal graph.) 2. I feel a great sense of accomplishment after finishing a 21-hour lecture! I did it!! :D 3. Sections 7-9 felt difficult. I think I've already dealt with logins, errors, and exception handling in practice, but I just need to know how to use it, right? It's so hard to think about implementing it myself. ㅠㅠ Sigh... I'll have to review it later when I finish the roadmap! 4. Thank you so much for the great lecture!! Teacher Kim Young-han is the best!!