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| Criterion |  Operations Gemba Walk |  Engineering Hypothesis-Driven Troubleshooting |  Innovation Lean Startup |  Engineering Fault Isolation |
|---|---|---|---|---|
Purposedifferent | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | 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. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | 30-120 min | 30-240 min | Wochen bis Monate je Lernzyklus | 30-180 min |
Participantsdifferent | 2-6 | 1-6 | 2-8 | 1-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area |
Tagsno overlap | LeanObservationProcessOperations | TroubleshootingProblem solvingDiagnosis | LeanStartupValidationMVP | TroubleshootingDiagnosisEngineering |