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| Criterion |  Operations 5 Whys |  Operations Runbook |  Operations 8D Problem Solving |  Operations Fishbone Diagram |
|---|---|---|---|---|
Purposedifferent | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | For recurring operational tasks or incidents, the method keeps solid action logic ready. It reduces uncertainty when time pressure, role changes, or rare situations demand fast access. | 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. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | Low | Low | High | Low |
Timedifferent | 15-30 min | 20-60 min | 1-6 Wochen | 30-60 min |
Participantsdifferent | 2-6 | 1-4 | 4-10 | 2-8 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop |
Outputdifferent | Root cause notes, Countermeasures | Runbook, Checklist, Escalation Path | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | Root causeIncidentLeanProblem solving | OperationsReliabilityDocumentation | QualityProblem solvingRoot cause | Root causeQualityOperations |