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| Criterion |  Operations Barrier Analysis |  Operations Causal Factor Analysis |  Product Discovery Experiment Canvas |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | 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. | 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. |
Complexitydifferent | Medium | High | Low | Low |
Timedifferent | 2-4 h | 2-6 h | 30-60 min | 20-35 min |
Participantsdifferent | 2-6 | 3-10 | 1-5 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Completed Experiment Canvas, Success Metric | Test Card with a pre-set threshold |
Tagsno overlap | Root causeSafetyIncident | CausalityIncidentRoot causeTimeline | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryHypothesis |