When I was in college, the content of the classes didn't always make sense. I attended classes on SOLID principles and other things, and while taking exams, I thought, "What is this?" and graduated. I got a job as a front-end developer, but I kept feeling a thirst for something I couldn't understand, so I bought a Spring course, and I'm really glad I listened to it. I flipped through books, didn't understand them, and closed them, and the mess in my head, like the earphone cord in my pocket, all came out in one go. Thank you for the great lecture. I want to listen hard and internalize it so I can move on to become a full-stack developer.