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Criterion
Paper illustration for Wideband Delphi.
Decision Making
Wideband Delphi
Paper illustration for Evaporating Cloud.
Systems Thinking
Evaporating Cloud
Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Purposedifferent
A single opinion rarely holds up for planning when the future is genuinely uncertain. It separates options, evaluation criteria, and open risks. The result is captured as an Estimate Range, Assumption Log, and Expert Consensus Notes.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.
Complexitydifferent
HighMediumLow
Timedifferent
1-4 h or multiple rounds60-120 min45-90 min
Participantsdifferent
4-12 Experten2-82-8
Formatdifferent
Workshop + asyncWorkshopWorkshop + async
Outputdifferent
Estimate Range, Assumption Log, Expert Consensus NotesConflict Cloud, Assumption List, Breakthrough Ideas, Next ExperimentsAssumption List, Critical Assumptions, Learning Plan
Tagsno overlap
EstimationExpertsForecasting
Theory of ConstraintsAssumptionsSystems thinking
AssumptionsRiskDecisionDiscovery
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Often compared together

Methods with strong topical overlap with the current selection, not yet in the comparison.

Anonymous individual judgments pass through feedback loops to form a distribution.
Decision Making
Delphi Method
Paper illustration of a calm four-quadrant Assumption Map with hypothesis cards and emphasis on important assumptions with little evidence.
Product Discovery
Assumption Mapping
Paper illustration of DIBB with its method-specific working model.
Product Strategy
DIBB
Paper illustration for Dot Estimation.
Facilitation
Dot Estimation