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| Criterion |  Product Discovery Test Card |  Operations Getting Things Done |  Product Discovery MVP Test Matrix |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | With many open commitments and ideas in daily life, a reliable external storage system emerges. The method relieves the mind so priority and context don't have to compete in memory. | 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 | Medium | Low |
Timedifferent | 20-35 min | 1-2 h Setup, laufend | 45-75 min | 25-40 min |
Participantsdifferent | 1-5 | 1 | 2-8 | 1-5 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop + async |
Outputdifferent | Test Card with a pre-set threshold | Action Lists, Project List, Review Routine | Test Matrix, Test Plan | Learning Card with evidence and next action |
Tagsno overlap | ExperimentsValidationDiscoveryHypothesis | ProductivityPlanningTasksExecution | ExperimentsValidationDiscoveryOptions | ExperimentsValidationDiscoveryLearning |