The document discusses impact and how to measure it. Impact is defined as the tangible and intangible effects of one entity's actions on another. Examples provided include following a diet, going to the gym, taking SAT classes, and attending African Leadership Academy. For each example, potential metrics for measuring impact are outlined. These include things like weight lost, muscle mass gained, test scores improved, and professional or leadership positions attained by alumni. The document encourages thinking about how to measure the impact of products or services delivered, like through customer satisfaction surveys or assessing learning outcomes. It emphasizes the importance of defining relevant metrics to understand impact.