Strategic assumption surfacing and testing (SAST)
A problem structuring method for use in situations where decisive action is obstructed by internal disagreements. Coherent sub-groups are formed with the purpose of advocating differing strategies, and each identifies the significant assumption on which its preferred strategy depends. The sub-groups are then reunited to debate the differences in assumptions, with the aim of achieving a compromise on assumptions so that a consensus strategy can be derived. Problem structuring methods.