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Criterion
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
Purposedifferent
When many people in a group too rarely get to speak, 1-2-4-All distributes thinking time more fairly. The format builds participation step by step and makes quiet or still-unformed thoughts usable faster.When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.
Complexitydifferent
LowMedium
Timedifferent
10-20 min45-60 min
Participantsdifferent
4-100+2-8
Formatdifferent
WorkshopWorkshop + async
Outputdifferent
Idea List, Shared Insights, Emergent ThemesAssumption map, Test backlog, Risk ranking
Tagsno overlap
FacilitationInclusionIdeation
AssumptionsRiskExperimentsValidation
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Often compared together

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

Paper illustration of Riskiest Assumption Test with a method-specific labelled workspace.
Product Discovery
Riskiest Assumption Test
Paper illustration for Round Robin Brainstorming
Innovation
Round Robin Brainstorming
Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing