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| Criterion |  Product Discovery Test Card |  Operations Gemba Walk |  Product Discovery Experiment Canvas |  Product Discovery MVP Test Matrix |
|---|---|---|---|---|
Purposedifferent | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | When experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric. | 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 | Low | Medium |
Timedifferent | 20-35 min | 30-120 min | 30-60 min | 45-75 min |
Participantsdifferent | 1-5 | 2-6 | 1-5 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Test Card with a pre-set threshold | Observation Notes, Improvement Ideas | Completed Experiment Canvas, Success Metric | Test Matrix, Test Plan |
Tagsno overlap | ExperimentsValidationDiscoveryHypothesis | LeanObservationProcessOperations | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryOptions |