There are many smart people in this world and many skilled developers in Korea, but I think the ability to teach others about their own abilities is a separate thing. I dare not say anything to them, but I remember what my professor said in my first-year programming class after I graduated from a computer science university. Computers are newborn babies, so programmers have to teach them everything from A to Z. But not all lectures are like that, but... Some instructors teach because they know the knowledge themselves, but students don't, so there are some who just pass through the class like reading a book. It's not limited to online lectures, but whether it's an academy or a school... After listening to the Spring Boot Basics and this HTTP lecture, Younghan naturally continued from the learning goals and history in the lecture to the curriculum of the book, so I never thought, "Huh? Why is this suddenly popping up?" And Ah.. Younghan-nim is constantly thinking and revising, and how to structure the lectures, and the timing to change the lecture atmosphere in the middle so that the students don't get bored.. I really respect Younghan-nim's efforts. I really need to take other lectures because I'm lacking in other areas, but my hands and eyes only go to Younghan-nim's lectures.. Isn't this love..? I think it's an obsession. I'll keep progressing by referring to the roadmap! Thank you!