Martin Sandbu, an insightful FT economics editorial writer, dives into the evolution of effective altruism, tracing its transformation from a charitable approach to a complex moral landscape filled with existential risks. He discusses the fallout from Sam Bankman-Fried's scandal and its impact on the movement, questioning the ethics of utilitarianism. The conversation highlights the need for a more nuanced perspective on altruism, addressing the challenges and future of this ideology in a changing world.