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| Criterion |  Engineering Fault Isolation |  Product Strategy Lean Canvas |  Operations Root Cause Tree Analysis |
|---|---|---|---|
Purposedifferent | 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. | 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. | 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. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 30-180 min | 45-90 min | 1-3 h |
Participantsdifferent | 1-6 | 1-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Lean Canvas, Core Assumptions, Experiment Backlog | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | TroubleshootingDiagnosisEngineering | StartupLeanAssumptionsBusiness model | Root causeTreeIncidentQuality |
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