This document discusses how changes to incentives can potentially be counterproductive. It explains that incentives induce behavior by comparing costs and benefits, but that their effects are often only temporary. When incentives are removed or changed, behaviors change as well. Additionally, incentives based on market norms rather than social norms can cause issues. The document provides examples of how incentives have unintended consequences and concludes that while incentives can be effective short-term, they often become ineffective over the long-term, especially if changed.