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| Criterion |  Engineering Fault Isolation |  Business Strategy 5-Minuten VC-Check |  Operations A3 Problem Solving |
|---|---|---|---|
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. | 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. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 30-180 min | 5-15 min | 45-90 min |
Participantsdifferent | 1-6 | 1-5 | 2-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | VC-check note, Go/sharpen/park decision, Risk and assumption list, Next validation step | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | TroubleshootingDiagnosisEngineering | StartupValidationCompetition | LeanProblem solvingCoachingOperations |
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