Section 3 of 4 · 2 lessons

Compare Designs Under Constraints

The fastest candidate may miss too many faults, while the most accurate one may respond too late. We will identify which designs meet the requirements, examine the remaining trade-offs, and find the assumptions that could change our choice.

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Requirements and Trade-offs

Some limits must hold; other qualities are preferences. Keep that distinction visible while comparing candidates and investigating assumptions that could change the choice.

  1. 01Which Designs Are Actually Acceptable?A design can be fast, accurate, or inexpensive without meeting the job’s requirements. Remove infeasible options before comparing the choices that remain.
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  2. 02Which Assumption Could Change Our Decision?An estimate can look convincing because its uncertain inputs were hidden. Vary the assumptions and find where the preferred design changes.
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