Christopher Marquis, a Professor at the Judge Business School in Cambridge and author of "Profiteers," delves into the hidden costs of corporate practices. He discusses how industries like agriculture and fast fashion externalize their negative impacts, often at the expense of society and the environment. Marquis introduces concepts like the externality iceberg and critiques the gap between consumer awareness and ethical choices, particularly in the chocolate industry. He also highlights the dangers of greenwashing and the environmental costs tied to modern technology.