I keep concentrating and listening. This is truly an excellent lecture. As I listen to this lecture, which condenses knowledge accumulated over a long time, I find myself constantly rewatching, reviewing, and organizing. Obsidian is truly the best tool. After the lecture opened, I find myself revisiting the unclear theories and methods daily. The instructor's quick QnA responses are also incredibly helpful when applying what I learn. Honestly, if I had competitors in my field, I'd wish they never listened to this lecture, not even until their dying day. I consider note-taking and organization to be extremely important. So, it was always such a pity when I had to discard my well-organized physical notes after some time. It's on a completely different level compared to buying and organizing notes using note apps with weak compatibility. If you learn it well, it's a better tool than Notion. I feel like I'm building my own data in this AI era. I feel a thrill when the data I've organized gets processed through AI. Highly recommended.