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| Criterion |  Innovation Brainstorming |  Operations Fault Tree Analysis |  Innovation Rapid Ideation |  Innovation Crazy 8s |
|---|---|---|---|---|
Purposedifferent | When a team faces an open question with many obvious directions, the method first creates breadth instead of premature commitment. It separates idea flow from evaluation and makes lines of thought visible, creating a pool for selection and further development. | 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 decision needs to be prepared quickly, the method generates many solution-close variants in a short time. It deliberately relies on pace to undercut self-censorship and perfectionism. This quickly produces a usable field for prioritization and further work. | 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. |
Complexitydifferent | Low | High | Low | Low |
Timedifferent | 30-60 min | 2-6 h | 5-20 min | 8-15 min |
Participantsdifferent | 4-12 | 3-8 | 1-20 | 1-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Idea pool, Theme clusters, Shortlist | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Ideenpool, Roh-Shortlist, Cluster | Sketch Set, Idea Shortlist, Direction Options |
Tagsno overlap | BrainstormingIdeationCreativityWorkshopDivergence | RiskRoot causeSafety | BrainstormingIdeationDivergenceSpeed | BrainstormingSketchingSpeedDivergenceDesign sprint |