This document summarizes a presentation by Roy Sampei on catching up on UX. It discusses why UX is important today given the proliferation of digital touchpoints. It outlines Roy's experience designing apps without properly understanding users through research and emphasizes the importance of user research, personas, and testing with users. The presentation also covers UX trends like lean UX, agile development, and MVPs. It stresses that the key to UX is deep understanding of users and assuming designers are always wrong without user feedback.