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| Criterion |  Operations Accountability Ladder |  Product Discovery Problem Interview |  Product Discovery Experiment Canvas |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | With defensive reactions to problems, the method shifts the view from justification to ownership. It makes visible which reaction stage a person or team is currently stuck on. | When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | 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 | 20-45 min | 30-60 min je Interview | 30-60 min | 20-35 min |
Participantsdifferent | 1-8 | 5-12 Interviews | 1-5 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Ownership Reflection, Action Commitment, Coaching Notes | Problem Evidence, Risk Notes, Customer Segments | Completed Experiment Canvas, Success Metric | Test Card with a pre-set threshold |
Tagsno overlap | ResponsibilityLeadershipTeam | DiscoveryInterviewsValidation | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryHypothesis |