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Criterion
Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Paper illustration of the Lightning Decision Jam working structure.
Facilitation
Decision Jam
A hypothetical failure makes concrete risks, signals, and fitting mitigations visible.
Decision Making
Pre-Mortem
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.When a decision is stuck, Decision Jam loosens the knot through structured separation of problem, idea, and selection. The format creates movement without jumping prematurely at the first seemingly elegant answer.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.
Complexitysame
LowLowLow
Timedifferent
45-90 min60-90 min20–45 min
Participantsdifferent
2-84-10Small cross-functional group
Formatdifferent
Workshop + asyncWorkshopWorkshop
Outputdifferent
Assumption List, Critical Assumptions, Learning PlanProblem Cluster, Prioritized Challenge, ExperimentRisk list, Mitigation plan, Assumption log
Tags1 shared
AssumptionsRiskDecisionDiscovery
FacilitationDecisionProblem solvingWorkshop
RiskDecisionFailurePlanning
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Methods with strong topical overlap with the current selection, not yet in the comparison.

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 Consensus Workshop working structure.
Facilitation
Consensus Workshop
Paper illustration for Constraint Analysis.
Decision Making
Constraint Analysis
Paper illustration of DIBB with its method-specific working model.
Product Strategy
DIBB