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| Criterion |  Operations Root Cause Tree Analysis |  Innovation Morphological Analysis |  Innovation Crazy 8s |
|---|---|---|---|
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. | 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. | 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 | Medium | Medium | Low |
Timedifferent | 1-3 h | 1-3 h | 8-15 min |
Participantsdifferent | 2-8 | 2-8 | 1-10 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Morphological Box, Concept Combinations, Idea Shortlist | Sketch Set, Idea Shortlist, Direction Options |
Tagsno overlap | Root causeTreeIncidentQuality | IdeationInnovationCreativity | BrainstormingSketchingSpeedDivergenceDesign sprint |
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