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| Criterion |  Innovation Crazy 8s |  Operations 5 Whys |  Operations MORT Analysis |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | With only a few minutes available and a still-fuzzy solution search, the method forces a wide range of variants. It produces fast sketches before the first idea can settle in, making different directions directly comparable and open to further development. | 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 safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. | 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 | Low | Low | High | Medium |
Timedifferent | 8-15 min | 15-30 min | Mehrere Tage bis Wochen | 2-4 h |
Participantsdifferent | 1-10 | 2-6 | 2-6 | 2-6 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Sketch Set, Idea Shortlist, Direction Options | Root cause notes, Countermeasures | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | BrainstormingSketchingSpeedDivergenceDesign sprint | Root causeIncidentLeanProblem solving | Root causeSafetySystemicIncident | Root causeSafetyIncident |