AMA | April 2026

In the April 2026 AMA episode of Mindscape, Sean Carroll delivers a rich, multidisciplinary exploration spanning quantum mechanics, cosmology, philosophy, and societal critique. He begins by reflecting on the psychological allure of science as a refuge from the unpredictability of human relationships, drawing parallels between the clarity of physical laws and the complexity of social life. The discussion delves into foundational issues in quantum theory, including the unresolved probability problem in the many worlds interpretation, the nature of time crystals, and the conservation of quantum information under unitary evolution. Carroll clarifies misconceptions about black holes, light, and space expansion, emphasizing that the speed of light and spacetime geometry prevent escape from black holes, while space’s expansion is not a velocity but a rate in inverse time. He also explores cognitive phenomena like the perception of time accelerating with age, attributing it to reduced novelty in later life. On societal matters, Carroll critiques undemocratic electoral systems like the U.S. Electoral College and first-past-the-post voting, advocating for ranked choice and proportional representation to ensure fairer outcomes. He argues that extreme income inequality distorts democracy and economic health, calling for wealth redistribution and a modified welfare state capitalism to strengthen both equity and market vitality. Throughout, he underscores the importance of evidence-based reasoning, humility in science, and the long-term moral evaluation of today’s institutions by future generations.