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| Criterion |  Operations Fishbone Diagram |  Product Discovery Learning Card |  Operations Failure Mode and Effects Analysis |  Product Discovery MVP Test Matrix |
|---|---|---|---|---|
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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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 several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. |
Complexitydifferent | Low | Low | High | Medium |
Timedifferent | 30-60 min | 25-40 min | 2-6 h | 45-75 min |
Participantsdifferent | 2-8 | 1-5 | 3-10 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Learning Card with evidence and next action | FMEA Table, Risk Priority, Mitigation Actions | Test Matrix, Test Plan |
Tagsno overlap | Root causeQualityOperations | ExperimentsValidationDiscoveryLearning | RiskQualityOperationsRoot cause | ExperimentsValidationDiscoveryOptions |