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Criterion
Paper matrix with six colored hat cards for information, feeling, value, caution, ideas and process control.
Facilitation
Six Thinking Hats
A hypothetical failure makes concrete risks, signals, and fitting mitigations visible.
Decision Making
Pre-Mortem
Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Purposedifferent
When a topic gets stuck too quickly in the same thinking mode, Six Thinking Hats deliberately separates the perspectives. This means facts, risks, creativity, and emotional signals get worked through one after another instead of mixed together.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.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
MediumLowLow
Timedifferent
45-90 min20–45 min45-90 min
Participantsdifferent
4-12Small cross-functional group2-8
Formatdifferent
WorkshopWorkshopWorkshop + async
Outputdifferent
Perspective Notes, Decision Inputs, Action ItemsRisk list, Mitigation plan, Assumption logAssumption List, Critical Assumptions, Learning Plan
Tags1 shared
FacilitationOptionsDecision
RiskDecisionFailurePlanning
AssumptionsRiskDecisionDiscovery
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Methods with strong topical overlap with the current selection, not yet in the comparison.

Paper illustration for Constraint Analysis.
Decision Making
Constraint Analysis
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 the Lightning Decision Jam working structure.
Facilitation
Decision Jam
Decision Tree method illustration showing its working structure
Decision Making
Decision Tree