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| Criterion |  Operations Barrier Analysis |  Operations Causal Factor Analysis |  UX Design Customer Journey Canvas |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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. | 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 a journey needs to be understood across several phases, it arranges experience, touchpoints, and opportunities into one picture. It makes gaps and friction along the user path clear. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | High | Medium | Low |
Timedifferent | 2-4 h | 2-6 h | 1-3 h | 15-30 min |
Participantsdifferent | 2-6 | 3-10 | 3-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Customer Journey Canvas, Pain Points, Experience Opportunities | Root cause notes, Countermeasures |
Tagsno overlap | Root causeSafetyIncident | CausalityIncidentRoot causeTimeline | JourneyCustomerService designCanvas | Root causeIncidentLeanProblem solving |