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| Criterion |  Operations Causal Factor Analysis |  Product Discovery Test Card |  Product Discovery Hypothesis Prioritization Canvas |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | High | Low | Medium | Low |
Timedifferent | 2-6 h | 20-35 min | 60-90 min | 25-40 min |
Participantsdifferent | 3-10 | 1-5 | 3-8 | 1-5 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Test Card with a pre-set threshold | Prioritization Canvas, Hypothesis Backlog | Learning Card with evidence and next action |
Tagsno overlap | CausalityIncidentRoot causeTimeline | ExperimentsValidationDiscoveryHypothesis | ExperimentsPrioritizationDiscoveryHypothesis | ExperimentsValidationDiscoveryLearning |