Explore fundamental UX design principles and gain insights into how users perceive application interfaces in this informative conference talk. Discover Gestalt principles for effective grouping and highlighting, understand the concepts of inattentional blindness and change blindness, and learn how users scan through views. Delve into techniques for promoting clarity in interfaces through levels of emphasis, and participate in tests that demonstrate personal experiences of these principles. Gain a deeper understanding of the challenges users face when interfaces are not designed with respect to essential design principles, including visual system intricacies, attentional blindness, peripheral vision, framing, color and shape perception, figureground relationships, proximity, Gestalt continuity, grouping, information importance, goals, and the Contour Bias Principle.