This is a lecture that I want to give a million stars, not just five. I think it's a lecture that made me realize what I lack while watching it. It explains the front-end part here and there, and I think I learned about the parts I neglected. I look forward to the next lecture. Every now and then, "You must not know this" is said, and it hits the nail on the head, but I'm laughing too. ㅎㅎ