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| Criterion |  Engineering Hypothesis-Driven Troubleshooting |  Operations Gemba Walk |  Business Strategy 5-Minuten VC-Check |  Engineering Fault Isolation |
|---|---|---|---|---|
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. | 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. | 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. | 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 | Medium | Low | Low | Medium |
Timedifferent | 30-240 min | 30-120 min | 5-15 min | 30-180 min |
Participantsdifferent | 1-6 | 2-6 | 1-5 | 1-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | Observation Notes, Improvement Ideas | VC-check note, Go/sharpen/park decision, Risk and assumption list, Next validation step | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area |
Tagsno overlap | TroubleshootingProblem solvingDiagnosis | LeanObservationProcessOperations | StartupValidationCompetition | TroubleshootingDiagnosisEngineering |