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| Criterion |  Operations Root Cause Tree Analysis |  Agile Specification by Example |  Agile Three Amigos |
|---|---|---|---|
Purposedifferent | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | 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. | When story, test, and implementation could drift apart, it brings business perspective, engineering, and quality together early. It prevents a story from being read differently only late in the process. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 1-3 h | 60-90 min pro Feature | 15-30 min |
Participantsdifferent | 2-8 | 3-6 | 3 |
Formatdifferent | Workshop | Workshop | Workshop + async |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Example Table, Acceptance Tests | Clarified Story, Test Examples, Open Questions |
Tagsno overlap | Root causeTreeIncidentQuality | AgileRequirementsExamplesBehavior-Driven Development | CollaborationBehavior-Driven DevelopmentQualityRefinement |
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