Which SUVs are most likely to rollover? What cities have the unhealthiest drinking water? Which factories are the most dangerous polluters? What cereals are the most nutritious? In recent decades, governments have sought to provide answers to such critical questions through public disclosure to force manufacturers, water authorities, and others to improve their products and practices. Corporate financial disclosure, nutritional labels, and school report cards are examples of such targeted transparency policies. At best, they create a light-handed approach to governance that improves markets,...