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| Criterion |  Decision Making Force Field Analysis |  DevOps Blameless Postmortem |  Product Discovery Experiment Canvas |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | In change initiatives, supporting and restraining forces sit at the table at the same time. Force Field Analysis makes these tensions explicit and shows where change can be pushed forward by strengthening or relieving. | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | 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 | Low | Medium | Low | Low |
Timedifferent | 45-90 min | 30-90 min | 30-60 min | 20-35 min |
Participantsdifferent | 3-12 | 3-12 | 1-5 | 1-5 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Force Field Map, Change Levers, Risk Notes | Postmortem Doc, Action Items, Timeline | Completed Experiment Canvas, Success Metric | Test Card with a pre-set threshold |
Tagsno overlap | ChangeDecisionStrategy | Site Reliability EngineeringIncidentLearningReliability | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryHypothesis |