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| Criterion |  Architecture Views and Beyond |  Systems Thinking Current Reality Tree |  Operations 8D Problem Solving |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | Views and Beyond organizes architecture into several views so no single diagram has to do everything at once. This makes it possible to choose the representation that fits the stakeholder's question. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | 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. | 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. |
Complexitydifferent | Medium | High | High | Low |
Timedifferent | 1-3 Tage | 2-6 h | 1-6 Wochen | 15-30 min |
Participantsdifferent | 1-4 | 3-8 | 4-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Architecture Views, Cross-view Notes, Rationale | Current Reality Tree, Core Problems, Intervention Ideas | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Root cause notes, Countermeasures |
Tagsno overlap | DocumentationStakeholdersArchitecture | Systems thinkingRoot causeConstraintsCausality | QualityProblem solvingRoot cause | Root causeIncidentLeanProblem solving |