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| Criterion |  Operations Gemba Walk |  Engineering Fault Isolation |  Business Strategy 5-Minuten VC-Check |  Engineering Hypothesis-Driven Troubleshooting |
|---|---|---|---|---|
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. | 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 5-Minute VC Check clarifies opportunities and strategic options at the earliest idea stage. It compares problem quality, customer willingness to pay, alternatives, differentiation, and market potential, and captures the result as a VC-check note, go/sharpen/park decision, and risk list. | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. |
Complexitydifferent | Low | Medium | Low | Medium |
Timedifferent | 30-120 min | 30-180 min | 5-15 min | 30-240 min |
Participantsdifferent | 2-6 | 1-6 | 1-5 | 1-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | VC-check note, Go/sharpen/park decision, Risk and assumption list, Next validation step | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary |
Tagsno overlap | LeanObservationProcessOperations | TroubleshootingDiagnosisEngineering | StartupValidationCompetition | TroubleshootingProblem solvingDiagnosis |