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| Criterion |  Operations Fault Tree Analysis |  UX Research Customer Journey Mapping |  Systems Thinking Causal Loop Diagram |  Operations Barrier Analysis |
|---|---|---|---|---|
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. | When a user journey falls apart across many touchpoints, customer journey mapping makes the experience visible as a coherent arc. Phases, emotions, and breaks become legible enough to prioritize critical moments deliberately. | A Causal Loop Diagram makes feedback, reinforcement, and balance in a system legible. It uncovers side effects and self-reinforcement that stay hidden in linear explanations. | 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 | High | Medium | Medium | Medium |
Timedifferent | 2-6 h | 2-4 h | 1-3 h | 2-4 h |
Participantsdifferent | 3-8 | 4-10 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Journey Map, Pain-point List, Opportunity Backlog | Causal Loop Diagram, Feedback Notes, Leverage Points | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | RiskRoot causeSafety | JourneyServiceService design | FeedbackSystems thinkingCausalityDynamics | Root causeSafetyIncident |