This document discusses interface design research methodology. It begins by stating that good design builds companies while bad design can still make money, but great design builds legacies. It then defines user interface design as the design of digital products and applications focused on the user experience. The document lists the key elements of good interface design as simplicity, consistency, identity, useful content, user-friendly navigation, visual appeal, compatibility, and stability. It provides examples of these elements and assigns students to design a 4+ page ecommerce website and submit it by the stated deadline.