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| Criterion |  Product Discovery Assumption Mapping |  Operations 5 Whys |  Architecture Risk Storming |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | 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. | Helps clarify architecture context, options, and consequences in concrete terms. It organizes technical context, alternatives, and consequences. The result is captured as an Annotated Diagram, a Prioritized Risk List, and an Action Backlog. | 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. |
Complexitydifferent | Medium | Low | Low | High |
Timedifferent | 45-60 min | 15-30 min | 60-90 min | 1-6 Wochen |
Participantsdifferent | 2-8 | 2-6 | 4-12 | 4-10 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Assumption map, Test backlog, Risk ranking | Root cause notes, Countermeasures | Annotated Diagram, Prioritized Risk List, Action Backlog | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | AssumptionsRiskExperimentsValidation | Root causeIncidentLeanProblem solving | RiskArchitectureWorkshopValidation | QualityProblem solvingRoot cause |