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| Criterion |  Operations Gemba Walk |  Engineering Hypothesis-Driven Troubleshooting |  Operations 8D Problem Solving |
|---|---|---|---|
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 an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. |
Complexitydifferent | Low | Medium | High |
Timedifferent | 30-120 min | 30-240 min | 1-6 Wochen |
Participantsdifferent | 2-6 | 1-6 | 4-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | LeanObservationProcessOperations | TroubleshootingProblem solvingDiagnosis | QualityProblem solvingRoot cause |
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