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| Criterion |  Operations Ivy Lee Method |  Systems Thinking Evaporating Cloud |  Decision Making Assumption Surfacing |  Product Discovery Assumption Mapping |
|---|---|---|---|---|
Purposedifferent | With a restless workday full of too many open items, the method creates radical simplicity. It directs attention to a short sequence instead of a broad, still-open field. | The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict. | 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. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | Low | Medium | Low | Medium |
Timedifferent | 5-10 min daily | 60-120 min | 45-90 min | 45-60 min |
Participantsdifferent | 1 | 2-8 | 2-8 | 2-8 |
Formatdifferent | Async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Daily Priority List, Completion Notes | Conflict Cloud, Assumption List, Breakthrough Ideas, Next Experiments | Assumption List, Critical Assumptions, Learning Plan | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | PrioritizationProductivityExecution | Theory of ConstraintsAssumptionsSystems thinking | AssumptionsRiskDecisionDiscovery | AssumptionsRiskExperimentsValidation |