The document discusses the dark side of process measurement that can occur when measurements are not implemented properly. It provides an example of a grocery warehouse that focused only on productivity measures, which led to deteriorating service levels and falling behind competitors. A process improvement team was formed and discovered issues like fatigue causing inventory to become out of stock at higher rates than competitors. The document argues management needs to focus on root cause analysis and mission-level goals, rather than just functional metrics, to avoid unintended consequences of process measurement.