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| Criterion |  Engineering Hypothesis-Driven Troubleshooting |  Engineering Fault Isolation |  UX Design Lean UX Canvas |  Product Discovery Experiment Canvas |
|---|---|---|---|---|
Purposedifferent | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. | 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. | The Lean UX Canvas helps clarify user behavior, touchpoints, and concept decisions. It makes assumptions and desired outcomes visible and captures the result as a completed canvas, hypothesis list, and first experiment. | When experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 30-240 min | 30-180 min | 2-3 h | 30-60 min |
Participantsdifferent | 1-6 | 1-6 | 3-8 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Completed Lean UX Canvas, Hypothesis list, First experiment | Completed Experiment Canvas, Success Metric |
Tagsno overlap | TroubleshootingProblem solvingDiagnosis | TroubleshootingDiagnosisEngineering | CanvasHypothesisOutcomesDiscovery | ExperimentsValidationDiscoveryHypothesis |