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| Criterion |  Operations Root Cause Tree Analysis |  Innovation Crazy 8s |  Innovation Morphological Analysis |  Innovation Brainstorming |
|---|---|---|---|---|
Purposedifferent | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | 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 search for solutions with many degrees of freedom, a grid emerges for systematic combinations. The method separates features, variants, and exclusion criteria, so the space gets explored deliberately. | 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. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 1-3 h | 8-15 min | 1-3 h | 30-60 min |
Participantsdifferent | 2-8 | 1-10 | 2-8 | 4-12 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Sketch Set, Idea Shortlist, Direction Options | Morphological Box, Concept Combinations, Idea Shortlist | Idea pool, Theme clusters, Shortlist |
Tagsno overlap | Root causeTreeIncidentQuality | BrainstormingSketchingSpeedDivergenceDesign sprint | IdeationInnovationCreativity | BrainstormingIdeationCreativityWorkshopDivergence |