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| Criterion |  Product Discovery Learning Card |  Agile Affinity Estimation |  Agile Bucket System |  Product Discovery Riskiest Assumption Test |
|---|---|---|---|---|
Purposedifferent | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | When many tasks need to be classified quickly, it sorts them by perceived effort and similarity. It reduces the effort of fine-grained estimation for large volumes. | When a large batch of work needs a fast, rough estimate, it sorts items into predefined size buckets. It sorts work by value, risk, and delivery ability. The result is captured as a Bucketed Backlog, Relative Estimates, and Split Candidates. | When an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | 25-40 min | 30-90 min | 30-90 min | 1-2 Wochen pro Iteration |
Participantsdifferent | 1-5 | 3-12 | 3-12 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Learning Card with evidence and next action | Affinity Size Map, Grouped Estimates, Unclear Items | Bucketed Backlog, Relative Estimates, Split Candidates | Prioritized Assumption List, Test Plan, Results Report |
Tagsno overlap | ExperimentsValidationDiscoveryLearning | EstimationBacklogRelative sizing | EstimationBacklogRelative sizing | ExperimentsValidationDiscoveryAssumptions |