I've been listening to it so many times these past few days, it's like a dream. Now, when I see you on the street, I ask you how you've been, as if I've met someone I know. At first, I bought the lecture because it was famous, but after listening to it, I realized that it's a good lecture for me. It's easy to understand because it explains with examples. I like it because it's a curriculum where you study step by step and the concept expands. It's the best lecture I've ever looked for. At first, I thought it might be difficult for me because of the free lecture, because of the lambda + stream + collection methods, but after listening to the core principles, the concepts were explained well step by step and the code was understandable, so I thought it was the perfect lecture for me. In particular, I really liked how you immediately caught and explained any confusing parts or problems that might arise if you did this. <<< This is really five stars. I like it because it's not ambiguous. I don't get lost. And this is a bonus, but watching you lecture, I feel like I'm learning how to talk and communicate in team communication. It seems like there's a lot to learn, like how you end every lecture with "Thank you." Anyway, I'll continue to listen and study hard in the future!! Thank you. ㅎㅎㅎ