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Selected:Fishbone DiagramFailure Mode and Effects AnalysisRiskiest Assumption TestAssumption Surfacing
| Criterion |  Operations Fishbone Diagram |  Operations Failure Mode and Effects Analysis |  Product Discovery Riskiest Assumption Test |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
Purposedifferent | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | When an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. | 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. |
Complexitydifferent | Low | High | Medium | Low |
Timedifferent | 30-60 min | 2-6 h | 1-2 Wochen pro Iteration | 45-90 min |
Participantsdifferent | 2-8 | 3-10 | 2-6 | 2-8 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | FMEA Table, Risk Priority, Mitigation Actions | Prioritized Assumption List, Test Plan, Results Report | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | Root causeQualityOperations | RiskQualityOperationsRoot cause | ExperimentsValidationDiscoveryAssumptions | AssumptionsRiskDecisionDiscovery |