The Tyranny of Metrics

Jerry Z. Muller critiques the modern obsession with quantitative performance measurement, a phenomenon he labels metric fixation. He argues that organizations across medicine, education, policing, and business have replaced professional judgment with standardized data points. The book documents unintended consequences such as "gaming the stats," where employees manipulate data to meet targets, and "creaming," where practitioners avoid difficult cases to maintain high success rates. Muller demonstrates how linking individual pay or institutional funding to narrow metrics often degrades the quality of service it intends to improve.

Public policy makers, corporate managers, and administrators read this book to understand why data-driven accountability frequently fails to produce efficiency. It serves those responsible for organizational design who need to distinguish between useful diagnostics and harmful surveillance. Readers walk away with a framework for determining when to rely on numerical data and when to trust human expertise. The text provides specific criteria for implementing measurement systems that support internal goals instead of incentivizing deceptive behavior or bureaucratic stagnation.