Assumption-Based Planning: A Tool for Reducing Avoidable SurprisesUnwelcome surprises in the life of any organization can often be traced to the failure of an assumption that the organization's leadership didn't anticipate or had forgotten. Assumption based planning (ABP) is a tool for identifying as many as possible assumptions underlying the plans of an organization and bringing them explicitly into the planning process. This book presents a variety of techniques for rooting out those vulnerable, crucial