Imagine trying to solve this complex problem: You have to
modernize a fleet of combat vehicles, such as tanks, tracked howitzers and
infantry fighting vehicles, choosing from among more than 50 ways to update
them to meet future threats. Each modernization option can be configured
differently to meet a variety of missions around the globe. You are constrained
by schedule milestones and the costs for research and development and
maintenance and operations, and your budget can change without warning. A shift
in the socio-political status of any country or the environment could have
consequences that would require you to re-think your decision and, by the way,
you’re planning 30 years into the future.