I listened to it once quickly, and from the second time on, I read it carefully. Even the teacher, who has a meticulous personality, had typos, and it felt human :) At first, I didn't even know what requirement analysis was, and I listened to everything the teacher taught without thinking because I wanted to see everything, but as I worked, I did a rough requirement analysis of my boss's request and made a rough screen design document (because I didn't learn how to do it properly, I kept working like that and didn't worry), and the work style of just talking here was so difficult (because all the situations mentioned in the lecture happened...), so I watched the second time really understanding one by one with the intention of doing requirement analysis and design. It was fun and I was looking forward to the next video. I watched it all and enjoyed it. I want to apply it one by one to my work in the future and watch the video again and again. I'm struggling with the development work that's just talk and such incompetence, but thanks to you, I'm working thinking that I've learned and gained skills. Thank you for making the video so hard.