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| Criterion |  Growth North Star Metric |  Decision Making Assumption Surfacing |  Product Discovery Test Card |  Product Discovery Experiment Canvas |
|---|---|---|---|---|
Purposedifferent | When product teams track many metrics, the view of the actual customer outcome easily gets lost. A North Star Metric bundles growth, usage, and value contribution into one signal that makes the system's direction visible. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 1-2 h | 45-90 min | 20-35 min | 30-60 min |
Participantsdifferent | 3-8 | 2-8 | 1-5 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | North Star metric, Input metric tree, Measurement cadence | Assumption List, Critical Assumptions, Learning Plan | Test Card with a pre-set threshold | Completed Experiment Canvas, Success Metric |
Tagsno overlap | GrowthMetricsAlignmentRetention | AssumptionsRiskDecisionDiscovery | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryHypothesis |