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| Criterion |  Engineering Fault Isolation |  Product Strategy Lean Canvas |  Business Strategy Business Model Stress Test |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
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. | A Business Model Stress Test checks how well a business model holds up under pressure and headwinds. It compares strengths, risks, market logic, and courses of action. The result is captured as a stress-test report and action plan per scenario. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. |
Complexitydifferent | Medium | Medium | High | Low |
Timedifferent | 30-180 min | 45-90 min | Half day | 45-90 min |
Participantsdifferent | 1-6 | 1-6 | 3-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Lean Canvas, Core Assumptions, Experiment Backlog | Stress Test Report, Action Plan per Scenario | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | TroubleshootingDiagnosisEngineering | StartupLeanAssumptionsBusiness model | StrategyBusiness modelRiskDiagnosis | AssumptionsRiskDecisionDiscovery |