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| Criterion |  Operations Kepner-Tregoe |  Facilitation 3-Circle Venn Diagram |  Operations 8D Problem Solving |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | When three perspectives matter at the same time, a Three-Circle Venn Diagram shows the overlaps and remainders precisely. It makes visible where shared effect arises and where only a partial perspective applies. | 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. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | High | Low | High | High |
Timedifferent | 2-8 h | 15-45 min | 1-6 Wochen | 2-6 h |
Participantsdifferent | 2-8 | 2-8 | 4-10 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Problem Analysis, Decision Analysis, Risk Plan | Venn Diagram, Overlap Notes, Differentiators | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | Problem solvingRoot causeDecisionOperations | ComparisonFacilitationAlignment | QualityProblem solvingRoot cause | RiskQualityOperationsRoot cause |