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| Criterion |  UX Design Design Studio |  Systems Thinking CATWOE Analysis |  Operations 5 Whys |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | When several designs need to be quickly put in relation to each other, it makes ideas visible and comparable. It encourages early variants instead of long upfront debates. | CATWOE structures a problem from six viewpoints and prevents too narrow a view of the situation. Different experiences of the system become comparably discussable this way. | 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 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 | Medium | Low | Medium |
Timedifferent | 1-3 h | 45-90 min | 15-30 min | 2-4 h |
Participantsdifferent | 3-8 | 3-8 | 2-6 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Sketches, Concept Directions, Design Decisions | CATWOE Canvas, Root Definition, Stakeholder Perspectives, Constraints | Root cause notes, Countermeasures | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | SketchingCollaborationIdeation | Systems thinkingFramingStakeholders | Root causeIncidentLeanProblem solving | Root causeSafetyIncident |