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Criterion
Game Day workspace showing the question, observations, and next decision.
DevOps
Game Day
ChatOps workspace showing the question, observations, and next decision.
DevOps
ChatOps
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 preparing for rare incidents, the method tests response capability under controlled conditions. It shows where assumptions about stability, roles, and recovery are too optimistic.For operational work in a distributed team, the method links communication with direct system control. It records decisions right where the signal, the context, and the execution come together.When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.
Complexitydifferent
HighMediumMedium
Timedifferent
Halber TagOngoing45-60 min
Participantsdifferent
5-202-202-8
Formatdifferent
WorkshopWorkshop + asyncWorkshop + async
Outputdifferent
Simulation Notes, Gaps List, Updated RunbooksChat Transcript, Action Log, AutomationsAssumption map, Test backlog, Risk ranking
Tagsno overlap
ResilienceOperationsIncident
CollaborationEngineeringIncident
AssumptionsRiskExperimentsValidation
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Paper illustration of Riskiest Assumption Test with a method-specific labelled workspace.
Product Discovery
Riskiest Assumption Test
Design sheets and interface cards connect to jointly written pseudocode with highlighted unresolved questions.
Architecture
ARID (Active Reviews for Intermediate Designs)
Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing