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| Criterion |  Product Discovery Learning Card |  Product Strategy Counter Metrics |  Product Discovery Experiment Canvas |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | When a headline metric could mask side effects, it adds guardrail signals against unwanted outcomes. It connects customer value, product logic, and decision priorities. The result is captured as a counter-metric list and guardrail definitions. | 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 25-40 min | 30-60 min | 30-60 min | 20-35 min |
Participantsdifferent | 1-5 | 2-6 | 1-5 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Learning Card with evidence and next action | Counter Metric List, Guardrail Definitions | Completed Experiment Canvas, Success Metric | Test Card with a pre-set threshold |
Tags1 shared | ExperimentsValidationDiscoveryLearning | MetricsMeasurementStrategyExperiments | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryHypothesis |