I think the greatest advantage of your lectures is that they contain content that helps us understand the process by going back to the past to see why things were implemented this way, while directly improving already implemented features one by one. If I had just used the features implemented in Java from the beginning, I wouldn't have understood at all how they were implemented or how the performance works, and as a result, nothing would have stuck in my head. But thanks to you taking the long time and effort to even draw diagrams to explain, it seems to stay in my head for a very long time and is easy to understand. Thank you so much. Please continue to provide great lectures in the future. I'll watch many of them ^^