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Criterion
Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Independent contributions form an ordered group priority list.
Facilitation
Nominal Group Technique
Paper illustration of the Lightning Decision Jam working structure.
Facilitation
Decision Jam
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 loud voices could dominate a round, Nominal Group Technique protects individual thinking time from group effects. It collects ideas separately first and only then enables shared weighting.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.
Complexitydifferent
LowMediumLow
Timedifferent
45-90 min60-120 min60-90 min
Participantsdifferent
2-85-124-10
Formatdifferent
Workshop + asyncWorkshopWorkshop
Outputdifferent
Assumption List, Critical Assumptions, Learning PlanRanked Ideas, Clarified Options, Group PriorityProblem Cluster, Prioritized Challenge, Experiment
Tagsno overlap
AssumptionsRiskDecisionDiscovery
FacilitationPrioritizationVotingInclusion
FacilitationDecisionProblem solvingWorkshop
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Methods with strong topical overlap with the current selection, not yet in the comparison.

Paper illustration of shared options, independently placed voting dots, and a highlighted shortlist.
Facilitation
Dot Voting
Paper illustration of a calibrated five-by-five risk matrix with response cards.
Decision Making
Risk Matrix
Paper illustration for 1-2-4-All.
Facilitation
1-2-4-All
Paper illustration of a calm four-quadrant Assumption Map with hypothesis cards and emphasis on important assumptions with little evidence.
Product Discovery
Assumption Mapping