This podcast episode explores the field of behavioral science and its application in product design to drive behavior change and optimize user engagement. It discusses the misconceptions of rational decision-making and highlights the value of understanding human behavior and incorporating psychology in product design. Real-life examples are provided to illustrate the impact of behavioral design on companies like Google, TikTok, and One Medical. The episode also delves into the key elements of behavior change, such as behavior, barriers, and benefits, and emphasizes the importance of motivation, reducing barriers, and providing immediate rewards. The role of behavioral economics in product design and the use of biases and heuristics in improving product experiences are discussed. Additionally, tactics such as adding friction to a signup flow to increase conversion, utilizing social norms, and offering incentives are explored. The episode concludes with insights on conducting quantitative research, defining engagement, and implementing effective strategies for activation and conversion.