View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Operations Fault Tree Analysis |  Decision Making Assumption Surfacing |  Innovation Reverse Brainstorming |  Innovation Rolestorming |
|---|---|---|---|---|
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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | 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 search for ideas stalls, switching roles helps people step outside their own perspective and activate new logics of action. The method reduces habit because contributions arise from a different stance. This brings unfamiliar, often fitting solution approaches into play. |
Complexitydifferent | High | Low | Low | Low |
Timedifferent | 2-6 h | 45-90 min | 30-60 min | 30-60 min |
Participantsdifferent | 3-8 | 2-8 | 3-12 | 3-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Assumption List, Critical Assumptions, Learning Plan | Reverse Ideas, Risk Themes, Solution Ideas | Rollenkarten, Ideenpool pro Rolle, Konsolidierte Shortlist |
Tagsno overlap | RiskRoot causeSafety | AssumptionsRiskDecisionDiscovery | BrainstormingIdeationCreativityRisk | BrainstormingIdeationCreativity |