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| Criterion |  Operations Fault Tree Analysis |  Operations Causal Factor Analysis |  Product Discovery Assumption Mapping |
|---|---|---|---|
Purposedifferent | 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. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | High | High | Medium |
Timedifferent | 2-6 h | 2-6 h | 45-60 min |
Participantsdifferent | 3-8 | 3-10 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | RiskRoot causeSafety | CausalityIncidentRoot causeTimeline | AssumptionsRiskExperimentsValidation |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
