Markets are taken as the norm in economics and in much of political and media discourse. But if markets are superior why does the public sector remain so large? Avner Offer provides a distinctive new account of the effective temporal limits on private, public, and social activity. Understanding the Private–Public Divide accounts for the division of labour between business and the public sector, how it changes over time, where the boundaries ought to run, and the harm that follows if they are violated. He explains how finance forces markets to focus on short-term objectives and why business...