In his new book on behavioral addiction, Irresistible, Adam Alter investigates what separates the irresistible from the forgettable. The answers draw from a broad range of case studies and research from as far afield as the world of video game design and television script writing to app design and digital advertising. The answers apply broadly to all forms of business, from online and digital product development to consumer sales, packaged goods, services, politics, medicine, and law. Why, for example, did Instagram succeed while Hipstamatic, a very similar earlier app, failed? Why do people play the lottery despite losing time and again and facing impossibly long odds? Should you release upbeat products when the economy is thriving or when times are tough? Alter answers these questions and more in a keynote that explains the sharp divide between the instant sensation and the forgotten disaster.