In her blockbuster TED Talk, Susan Cain has a call to action: Take introverts seriously, and understand what they can do in the right environment. Ben Lillie called her up for an extended conversation about the terrors of public speaking, how her issue is one of civil rights, and the neuroscience behind personalities.

Psychologist Paul Bloom studies the nature of pleasure. In this conversation with Ben Lillie, he discusses how knowing the history of an object can profoundly affect our enjoyment of it.