Examples do more than decorate an explanation: they show how an abstract rule behaves when applied to a recognizable situation. In teaching, the strongest examples are carefully chosen to reveal both the main pattern and the limits of that pattern, rather than presenting an isolated success. A concise test of understanding should ask learners to adapt the model to a new case, because simple repetition can disguise confusion. Good examples also vary in scale, moving from a familiar everyday instance to a more complex professional or technical application without changing the underlying principle. Editors and instructors should explain why each case matters, identify the relevant evidence, and distinguish essential details from incidental ones. Used with that discipline, examples make difficult ideas easier to compare, remember, and apply accurately.