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| Criterion |  Agile Affinity Estimation |  Product Discovery Hypothesis Prioritization Canvas |  Agile Bucket System |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | 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 many hypotheses compete for attention, it brings order to their learning sequence and importance. It separates problem, assumption, solution, and evidence. The result is captured as a prioritization canvas and a hypothesis backlog. | 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 30-90 min | 60-90 min | 30-90 min | 20-35 min |
Participantsdifferent | 3-12 | 3-8 | 3-12 | 1-5 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Affinity Size Map, Grouped Estimates, Unclear Items | Prioritization Canvas, Hypothesis Backlog | Bucketed Backlog, Relative Estimates, Split Candidates | Test Card with a pre-set threshold |
Tagsno overlap | EstimationBacklogRelative sizing | ExperimentsPrioritizationDiscoveryHypothesis | EstimationBacklogRelative sizing | ExperimentsValidationDiscoveryHypothesis |