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| Criterion |  UX Research Customer Journey Mapping |  Systems Thinking Current Reality Tree |  Operations 5 Whys |  Operations Causal Factor Analysis |
|---|---|---|---|---|
Purposedifferent | 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 Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | 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. | 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. |
Complexitydifferent | Medium | High | Low | High |
Timedifferent | 2-4 h | 2-6 h | 15-30 min | 2-6 h |
Participantsdifferent | 4-10 | 3-8 | 2-6 | 3-10 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Journey Map, Pain-point List, Opportunity Backlog | Current Reality Tree, Core Problems, Intervention Ideas | Root cause notes, Countermeasures | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | JourneyServiceService design | Systems thinkingRoot causeConstraintsCausality | Root causeIncidentLeanProblem solving | CausalityIncidentRoot causeTimeline |