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| Criterion |  Operations Fishbone Diagram |  UX Research Surveys |  Operations Fault Tree Analysis |
|---|---|---|---|
Purposedifferent | 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 topic needs to be validated broadly and many people can answer the same question, surveys gather structured feedback in a scalable form. Answers become comparable and segmentable instead of remaining merely anecdotal. | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. |
Complexitydifferent | Low | Medium | High |
Timedifferent | 30-60 min | 3-14 Tage | 2-6 h |
Participantsdifferent | 2-8 | 50+ | 3-8 |
Formatdifferent | Workshop | Async | Workshop + async |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Survey Results, Charts, Segment Insights | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tagsno overlap | Root causeQualityOperations | QuantitativeResearchValidation | RiskRoot causeSafety |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
