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| Criterion |  UX Research Surveys |  Operations Fault Tree Analysis |  Product Discovery Assumption Mapping |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. |
Complexitydifferent | Medium | High | Medium | Medium |
Timedifferent | 3-14 Tage | 2-6 h | 45-60 min | 2-4 h |
Participantsdifferent | 50+ | 3-8 | 2-8 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Survey Results, Charts, Segment Insights | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Assumption map, Test backlog, Risk ranking | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | QuantitativeResearchValidation | RiskRoot causeSafety | AssumptionsRiskExperimentsValidation | Root causeSafetyIncident |