First, I only listened to the design pattern part and part of the network. Based on what I listened to, I feel like the lecture overall is not for me. Here are the reasons: 1. Rather than feeling like I'm listening to a lecture, I feel like I'm eavesdropping on someone reviewing their personal study materials. I felt like they were "reading" the concepts instead of "explaining" them. They just read the PPT as it was written and quickly skipped over it, so it was hard to understand what was important. 2. The idea of explaining with code is a good one, but the explanation for it is very insufficient, and it seems to be interfering with the explanation of the concepts. I thought it might be better if there was no code. I couldn't understand the core concepts, and all I had in my head were coffee, latte, and factory... I think there was too little explanation about why design patterns are important, why they are necessary, and how they work. 4. It feels like I paid a lot for a well-organized personal notebook. Since it only consists of keywords + simple explanations, I don't think I can learn much about design patterns through this lecture. I couldn't understand what he was trying to explain. 5. The editing is really bad. The ending part just cuts off without context, or it doesn't necessarily have to be broadcast, "Wait a minute" ~ He gives a short lecture, and then just continues the lecture with "Wait a minute". It's a bit... what is this? from the perspective of someone who is paying to listen to the lecture... I think it would be better to edit and upload those parts. The overall content composition seemed quite good, so I bought it after listening to the sample part, but from my perspective, it was a very disappointing lecture. I think my standards for high quality and the instructor's standards didn't match. I might have had too high expectations. ㅎㅎ The content composition itself seems quite good, so I'm going to listen to the end. Still, it seems like a good idea to study the big picture and understand the keywords.