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Selected:8D Problem SolvingARID (Active Reviews for Intermediate Designs)Family Tree AnalysisRoot Cause Tree Analysis
| Criterion |  Operations 8D Problem Solving |  Architecture ARID (Active Reviews for Intermediate Designs) |  Operations Family Tree Analysis |  Operations Root Cause Tree Analysis |
|---|---|---|---|---|
Purposedifferent | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. | 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 | High | Medium | Medium | Medium |
Timedifferent | 1-6 Wochen | 2–4 h review as a planning range; preparation and evaluation additional | 2-4 h | 1-3 h |
Participantsdifferent | 4-10 | Designers, developers as users, and facilitation | 2-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Family Tree Diagram, Pattern Notes, Systemic Measures | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | QualityProblem solvingRoot cause | ArchitectureEngineeringFeedbackValidationTasks | Root causePatternsIncidentSystemic | Root causeTreeIncidentQuality |