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| Criterion |  Decision Making Assumption Surfacing |  Decision Making Pre-Mortem |  Domain Modeling EventStorming |
|---|---|---|---|
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 a domain consists of many events, rules, and states, it creates a shared modeling space for the team. It bundles language, flows, and boundaries before domain knowledge fragments into siloed views. |
Complexitydifferent | Low | Low | Medium |
Timedifferent | 45-90 min | 20–45 min | 2-8 h |
Participantsdifferent | 2-8 | Small cross-functional group | 5-12 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Assumption List, Critical Assumptions, Learning Plan | Risk list, Mitigation plan, Assumption log | Event Timeline, Ubiquitous Language, Boundaries, Open Questions |
Tagsno overlap | AssumptionsRiskDecisionDiscovery | RiskDecisionFailurePlanning | Domain-Driven DesignEventsDiscoveryWorkshop |
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