The advantages of object-oriented programming are explained in school as easy to upgrade with text, easy to maintain, and high reliability, but the instructor explains it easily with examples using actual interface applications and code, so I think he gives examples so well that I can go through the class thinking, "Oh, that's what he means." After transferring to a school in the Seoul area due to infrastructure, I haven't been coding for long, but every time I listen to the lecture, I feel like I'm standing on the shoulders of a giant and looking at the wider world of coding. Thank you always :) I'll listen hard!