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Criterion
A hypothetical failure makes concrete risks, signals, and fitting mitigations visible.
Decision Making
Pre-Mortem
Paper illustration of the Lightning Decision Jam working structure.
Facilitation
Decision Jam
Paper illustration of a calm four-quadrant Assumption Map with hypothesis cards and emphasis on important assumptions with little evidence.
Product Discovery
Assumption Mapping
Purposedifferent
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 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.When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.
Complexitydifferent
LowLowMedium
Timedifferent
20–45 min60-90 min45-60 min
Participantsdifferent
Small cross-functional group4-102-8
Formatdifferent
WorkshopWorkshopWorkshop + async
Outputdifferent
Risk list, Mitigation plan, Assumption logProblem Cluster, Prioritized Challenge, ExperimentAssumption map, Test backlog, Risk ranking
Tagsno overlap
RiskDecisionFailurePlanning
FacilitationDecisionProblem solvingWorkshop
AssumptionsRiskExperimentsValidation
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Methods with strong topical overlap with the current selection, not yet in the comparison.

Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Paper illustration for Risk Storming.
Architecture
Risk Storming
Paper illustration of Riskiest Assumption Test with a method-specific labelled workspace.
Product Discovery
Riskiest Assumption Test