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| Criterion |  Product Strategy Lean Canvas |  Engineering Fault Isolation |  Operations 8D Problem Solving |
|---|---|---|---|
Purposedifferent | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | 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 | Medium | High |
Timedifferent | 45-90 min | 30-180 min | 1-6 Wochen |
Participantsdifferent | 1-6 | 1-6 | 4-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Lean Canvas, Core Assumptions, Experiment Backlog | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | StartupLeanAssumptionsBusiness model | TroubleshootingDiagnosisEngineering | QualityProblem solvingRoot cause |
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