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| Criterion |  Product Discovery Test Card |  Engineering Goal Question Metric |  Product Strategy Counter Metrics |
|---|---|---|---|
Purposedifferent | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | Helps clarify technical problems, hypotheses, and next steps in concrete terms. It breaks a technical problem into testable parts. The result is captured as a GQM table and metric briefs. | 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. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 20-35 min | 90-180 min | 30-60 min |
Participantsdifferent | 1-5 | 3-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Test Card with a pre-set threshold | GQM Table, Metric Profiles | Counter Metric List, Guardrail Definitions |
Tagsno overlap | ExperimentsValidationDiscoveryHypothesis | MetricsMeasurementEngineeringAlignment | MetricsMeasurementStrategyExperiments |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
