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| Criterion |  Agile Three Amigos |  Facilitation Dot Estimation |  Operations 5 Whys |  Operations Root Cause Tree Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | When size or effort can only be estimated roughly, Dot Estimation condenses the group's experience into a quick range. It turns individual contributions into a visible selection. The result is captured as an Effort Heatmap, Risk Signals, and Discussion Targets. | 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. | 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. |
Complexitydifferent | Low | Low | Low | Medium |
Timedifferent | 15-30 min | 5-20 min | 15-30 min | 1-3 h |
Participantsdifferent | 3 | 3-20 | 2-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | Clarified Story, Test Examples, Open Questions | Effort Heatmap, Risk Signals, Discussion Targets | Root cause notes, Countermeasures | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | CollaborationBehavior-Driven DevelopmentQualityRefinement | EstimationEffortRisk | Root causeIncidentLeanProblem solving | Root causeTreeIncidentQuality |