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| Criterion |  Decision Making Assumption Surfacing |  Decision Making Pre-Mortem |  Product Strategy Lean Canvas |  Product Strategy DIBB |
|---|---|---|---|---|
Purposedifferent | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | DIBB helps clarify target groups, value, goals, and priorities by making the logic behind a decision explicit. It captures results as a DIBB document, belief list, bet list, and learning report. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 45-90 min | 20–45 min | 45-90 min | 1-2 h |
Participantsdifferent | 2-8 | Small cross-functional group | 1-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Assumption List, Critical Assumptions, Learning Plan | Risk list, Mitigation plan, Assumption log | Lean Canvas, Core Assumptions, Experiment Backlog | DIBB document, Belief list, Bet list, Learning report |
Tagsno overlap | AssumptionsRiskDecisionDiscovery | RiskDecisionFailurePlanning | StartupLeanAssumptionsBusiness model | StrategyDecisionAssumptionsHypothesis |