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| Criterion |  Operations Fault Tree Analysis |  Innovation Morphological Analysis |  Innovation Reverse Brainstorming |  Innovation Lotus Blossom |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | For persistent errors or blockages, the method shifts the view to the opposite of the desired effect. It exposes the mechanics of failure and makes hidden causes easier to grasp. This makes improvement more concrete and the problem clearer. | When a central question feels too large, the method breaks it into neighboring topic fields with their own depth of ideation. It holds structure and openness at the same time, so adjacent perspectives don't get lost. This grows an idea space out of a core problem. |
Complexitydifferent | High | Medium | Low | Low |
Timedifferent | 2-6 h | 1-3 h | 30-60 min | 45-90 min |
Participantsdifferent | 3-8 | 2-8 | 3-12 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Morphological Box, Concept Combinations, Idea Shortlist | Reverse Ideas, Risk Themes, Solution Ideas | Lotus Diagram, Idea Themes, Shortlist |
Tagsno overlap | RiskRoot causeSafety | IdeationInnovationCreativity | BrainstormingIdeationCreativityRisk | BrainstormingIdeationCreativityDivergenceWorkshop |