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| Criterion |  Operations 5 Whys |  Operations Root Cause Analysis |  Agile Specification by Example |
|---|---|---|---|
Purposedifferent | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | When business rules need to become precise, it ties language, example, and test together. It sorts work by value, risk, and delivery ability. The result is captured as an Example Table and Acceptance Tests. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 15-30 min | 1-4 h | 60-90 min pro Feature |
Participantsdifferent | 2-6 | 3-8 | 3-6 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Root cause notes, Countermeasures | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Example Table, Acceptance Tests |
Tagsno overlap | Root causeIncidentLeanProblem solving | Root causeProblem solvingQualityIncident | AgileRequirementsExamplesBehavior-Driven Development |
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