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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 an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
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.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
LowLowLowMedium
Timedifferent
20–45 min60-90 min45-90 min45-60 min
Participantsdifferent
Small cross-functional group4-102-82-8
Formatdifferent
WorkshopWorkshopWorkshop + asyncWorkshop + async
Outputdifferent
Risk list, Mitigation plan, Assumption logProblem Cluster, Prioritized Challenge, ExperimentAssumption List, Critical Assumptions, Learning PlanAssumption map, Test backlog, Risk ranking
Tagsno overlap
RiskDecisionFailurePlanning
FacilitationDecisionProblem solvingWorkshop
AssumptionsRiskDecisionDiscovery
AssumptionsRiskExperimentsValidation
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