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| Criterion |  Operations Root Cause Analysis |  Operations Fishbone Diagram |  Innovation Brainstorming |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | 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. | When a team faces an open question with many obvious directions, the method first creates breadth instead of premature commitment. It separates idea flow from evaluation and makes lines of thought visible, creating a pool for selection and further development. | 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 | Medium | Low | Low | High |
Timedifferent | 1-4 h | 30-60 min | 30-60 min | 1-6 Wochen |
Participantsdifferent | 3-8 | 2-8 | 4-12 | 4-10 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Fishbone Diagram, Cause Categories, Investigation Backlog | Idea pool, Theme clusters, Shortlist | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | Root causeProblem solvingQualityIncident | Root causeQualityOperations | BrainstormingIdeationCreativityWorkshopDivergence | QualityProblem solvingRoot cause |