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| Criterion |  Operations Fishbone Diagram |  Product Discovery MVP Test Matrix |  Product Discovery Learning 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 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 30-60 min | 45-75 min | 25-40 min |
Participantsdifferent | 2-8 | 2-8 | 1-5 |
Formatdifferent | Workshop | Workshop | Workshop + async |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Test Matrix, Test Plan | Learning Card with evidence and next action |
Tagsno overlap | Root causeQualityOperations | ExperimentsValidationDiscoveryOptions | ExperimentsValidationDiscoveryLearning |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
