After reading Toby's Spring Chapter 6, I had a mental breakdown and put the book down for a while, but I'll have to finish this lecture and go back to reading it. (Review after completing the lecture) At first, I was overwhelmed by the size of the lecture, which was 125 lectures, but as I listened to it, I understood why the lecture size was so large. As you said at the end of the lecture, I'll try to get through more code and look at more references. Now, I'll have to go study other design patterns that I don't understand enough. I'll come back next time with a better look.^^