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| Criterion |  Product Discovery Problem Interview |  Operations Fishbone Diagram |  Operations Failure Mode and Effects Analysis |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
Purposedifferent | When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | 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. | 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 | Medium | Low | High | Low |
Timedifferent | 30-60 min je Interview | 30-60 min | 2-6 h | 45-90 min |
Participantsdifferent | 5-12 Interviews | 2-8 | 3-10 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | Fishbone Diagram, Cause Categories, Investigation Backlog | FMEA Table, Risk Priority, Mitigation Actions | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | DiscoveryInterviewsValidation | Root causeQualityOperations | RiskQualityOperationsRoot cause | AssumptionsRiskDecisionDiscovery |