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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 paper-based illustration representing Brainstorming with its core stages and visible working result.
Innovation
Brainstorming
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.When a team faces an open question with many obvious directions, the method first creates breadth instead of premature commitment. It separates idea flow from evaluation and makes lines of thought visible, creating a pool for selection and further development.
Complexitysame
LowLowLow
Timedifferent
45-90 min60-90 min30-60 min
Participantsdifferent
2-84-104-12
Formatdifferent
Workshop + asyncWorkshopWorkshop
Outputdifferent
Assumption List, Critical Assumptions, Learning PlanProblem Cluster, Prioritized Challenge, ExperimentIdea pool, Theme clusters, Shortlist
Tagsno overlap
AssumptionsRiskDecisionDiscovery
FacilitationDecisionProblem solvingWorkshop
BrainstormingIdeationCreativityWorkshopDivergence
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Often compared together

Methods with strong topical overlap with the current selection, not yet in the comparison.

Paper illustration of the Lotus Blossom working structure.
Innovation
Lotus Blossom
Paper illustration for Reverse Brainstorming
Innovation
Reverse Brainstorming
Paper illustration for Round Robin Brainstorming
Innovation
Round Robin Brainstorming
Paper illustration of Starbursting with its method-specific working model.
Innovation
Starbursting