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| Criterion |  Operations Fishbone Diagram |  Product Discovery Opportunity Solution Tree |  Product Discovery Test Card |
|---|---|---|---|
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. | When discovery keeps swinging between goals, ideas, and learning loops, it creates clear steering logic. It connects the desired outcome, opportunities, and experiments into a legible structure. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 30-60 min | 1-2 h Setup, laufend | 20-35 min |
Participantsdifferent | 2-8 | 2-6 | 1-5 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Opportunity Solution Tree, Experiment Backlog, Learning Log | Test Card with a pre-set threshold |
Tagsno overlap | Root causeQualityOperations | DiscoveryOutcomesExperimentsOpportunity | ExperimentsValidationDiscoveryHypothesis |
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