This podcast episode explores the interplay between principles, interests, and morality in shaping human behavior and decision-making. It discusses how individuals prioritize their own interests and fitness over overarching moral commitments, but also highlights examples of individuals who adhere to principles that go against their own self-interests. The episode delves into the role of moral beliefs, self-deception, and motivations in shaping individuals' stances on issues like abortion. It also examines the impact of social media on society, the emergence of a moralistic cultural moment, and the weaponization of morality. The episode explores concepts like costly signals, conflicting moral views, decision fatigue, and the challenges of navigating through a nuanced set of rules in the modern world. The speakers delve into the complexities of hypocrisy, bullying, and reputational attacks, and explore the implications of morality as a side-choosing mechanism and the creation of moral rules within societies. The conversation emphasizes the importance of self-reflection, open-mindedness, critical thinking, and the need to understand the consequences of our actions in an increasingly polarized and digital age.