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| Criterion |  Product Discovery Solution Interview |  Operations Fishbone Diagram |  Operations Failure Mode and Effects Analysis |  Product Discovery Assumption Mapping |
|---|---|---|---|---|
Purposedifferent | When a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | 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 assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | 30-60 min je Interview | 30-60 min | 2-6 h | 45-60 min |
Participantsdifferent | 5-10 Interviews | 2-8 | 3-10 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Fishbone Diagram, Cause Categories, Investigation Backlog | FMEA Table, Risk Priority, Mitigation Actions | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | ValidationInterviewsPrototype | Root causeQualityOperations | RiskQualityOperationsRoot cause | AssumptionsRiskExperimentsValidation |