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| Criterion |  Operations Fault Tree Analysis |  Innovation Reverse Brainstorming |  Innovation Crazy 8s |
|---|---|---|---|
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 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. | 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 | High | Low | Low |
Timedifferent | 2-6 h | 30-60 min | 8-15 min |
Participantsdifferent | 3-8 | 3-12 | 1-10 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Reverse Ideas, Risk Themes, Solution Ideas | Sketch Set, Idea Shortlist, Direction Options |
Tagsno overlap | RiskRoot causeSafety | BrainstormingIdeationCreativityRisk | BrainstormingSketchingSpeedDivergenceDesign sprint |
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