Concrete examples give an abstract idea something specific to act on. Their value grows when you identify the general relationship that makes each case an example.
Understand the idea
Write a plain-language definition before selecting a case. Label the case's essential features explicitly. Otherwise a memorable story can replace the concept, leaving you able to recall the story but unable to recognize the same structure elsewhere. Use more than one setting so the principle can separate from incidental details.
Put it into practice
For opportunity cost, imagine choosing a two-hour work shift instead of attending a free workshop. The cost is the value of the best alternative forgone, not simply money spent. Next consider choosing one free course over another. Surface details change while the central tradeoff remains. Explain both with the same definition and identify which parts of the scenarios do not matter to that definition.
Check and adapt
Include a nonexample. Paying a fee does not fully explain opportunity cost until you identify the alternative use of the resources. If a vivid case contains unusual features, distinguish them from the essential ones. This prevents a narrow rule that works only for the first scenario encountered.
Put it into practice
Try it in your next study session
- Use a topic that matters to you and define an abstract term without repeating its name.
- Create two examples from different settings and one plausible near miss, explaining the shared structure and the missing criterion.
- Ask another person whether your near miss satisfies the definition, without revealing your classification first. Discuss the criterion behind any disagreement. Revise a vague definition rather than simply changing the label on the case, then check whether the revised wording still fits both genuine examples accurately.
Sources & further reading
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