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| Criterion |  Innovation Morphological Analysis |  Engineering Fault Isolation |  Engineering Hypothesis-Driven Troubleshooting |  Innovation Brainstorming |
|---|---|---|---|---|
Purposedifferent | 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. | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. | 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 | Medium | Medium | Low |
Timedifferent | 1-3 h | 30-180 min | 30-240 min | 30-60 min |
Participantsdifferent | 2-8 | 1-6 | 1-6 | 4-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Morphological Box, Concept Combinations, Idea Shortlist | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | Idea pool, Theme clusters, Shortlist |
Tagsno overlap | IdeationInnovationCreativity | TroubleshootingDiagnosisEngineering | TroubleshootingProblem solvingDiagnosis | BrainstormingIdeationCreativityWorkshopDivergence |