To understand this better, one can take a visual image by thinking of a cube as "future space." Somewhere inside that cube is where an organization's future lies. That cube represents the planning space. The first task is to make sure that the cube encompasses all the issues relevant to the business. Everything that is important to consider must be "inside" that cube—those are the mission drivers. To define the dimensions, one describes the boundaries (the dimensions) of that cube or planning space. By defining the dimensions carefully, one sets the boundary conditions of the planning environment. The scenarios used are chosen from the inside of that cube, strategically selected to cover the range of threats and opportunities resident in the planning space that is defined with the dimensions. NASA, outside experts, and the Aeronautics and Space Engineering Board (ASEB) steering committee worked jointly to nominate the mission drivers, select the dimensions, and chose the scenarios to be studied in detail.
The scenario space that emerged from the dimensions chosen are shown in Figure H-1 (the dimensions are arrayed along the top). The scenarios chosen for development are highlighted.
The Futures Group, Science Applications International Corporation, and NASA spent approximately eight weeks developing the scenario details (carefully following the advice of the steering committee concerning the intent of the scenarios chosen) and producing the narratives. The scenario documents contained narrative future histories,