The document discusses how human decision making is influenced by unconscious cognitive biases and emotions more than conscious thinking. Designers have an opportunity to use this knowledge of human psychology to subtly influence, or "nudge", behavior, decisions, attitudes, and emotions through persuasive design. For example, nudges in cafeteria design could guide students to make healthier food choices on campus in order to improve well-being and reduce obesity rates. Signage, food station layout, and tray use are proposed as nudges to encourage students to choose healthier options.