Before participating in this challenge, I used to judge UI/UX based on personal feelings and impressions. For example, I never thought that things like cancel buttons being small and hard to find or streak maintenance UI being designed had anything to do with specific concepts. But now, I feel I can organize my thoughts and express them well based on the concepts I learned from the challenge. The concept that particularly stuck with me is confirmshaming. When developing subscription services, you inevitably end up creating inconvenient UX designs at least once to prevent user churn—like hiding the unsubscribe button or emphasizing the color of the "keep benefits" button. I learned for the first time through the book that the concept related to this is called confirmshaming. I used to work thinking it was something unavoidable for the company's benefit, but while reading the book, I thought I should think more deeply about creating designs that don't make users feel uncomfortable. After the challenge ends, I think I'll read the chapters I haven't read yet and lightly organize my thoughts on my blog 2-3 times a week. Even if not perfectly every day, I think I'll try to do it consistently, little by little :) Actually, I always felt regretful at work because I didn't know much about UX in depth, but it was great that this challenge resolved that, and I think this will be an opportunity for me to properly study more about UX. It was really great to gain new insights about UX while working with people from various job fields and to be able to share points I wouldn't have thought of on my own. I'd like to express my gratitude to Dinon and everyone who participated in the challenge together! haha