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| Criterion |  Engineering Fault Isolation |  Architecture Risk Storming |  Engineering Hypothesis-Driven Troubleshooting |  Product Discovery Assumption Mapping |
|---|---|---|---|---|
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. | 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. | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 30-180 min | 60-90 min | 30-240 min | 45-60 min |
Participantsdifferent | 1-6 | 4-12 | 1-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Annotated Diagram, Prioritized Risk List, Action Backlog | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | TroubleshootingDiagnosisEngineering | RiskArchitectureWorkshopValidation | TroubleshootingProblem solvingDiagnosis | AssumptionsRiskExperimentsValidation |