Maryellen McDonald, a cognitive scientist and author, discusses the transformative power of conversation, emphasizing how talking sharpens the mind and enhances cognitive clarity. Rebecca Lemov, a Harvard historian, unpacks the complexities of brainwashing and the fine line between belief and manipulation. They explore why discussing emotions can lead to greater resilience and clarity, alongside examining the societal influences that shape our beliefs. Together, they illuminate how communication is not just about sharing ideas, but also about shaping our very understanding of the world.