This document discusses the importance of evaluation and distinguishing between outputs and outcomes. It emphasizes that evaluation should start with having a clear plan about what difference a program aims to make. Only then can an evaluation determine if the program achieved its intended outcomes. The document urges readers to avoid confusing outputs with outcomes and provides the definitions that outputs are the activities or services provided, while outcomes are the changes and differences that result from those activities. It advises asking "So what?" to help clarify the intended outcome of a program or intervention.