After unnecessary complexity has been reduced from the problem being solved, the scope of the solution to the problem is governed by the complexity of the problem. Complexity is needed to handle and process complexity. Systems acquire or accrete unnecessary complexity over time as originally unforeseen exceptions or changes are incorporated. It may be possible to reduce complexity by collapsing/compressing/combining/consolidating elements and by removing non-value-adding, duplicate, redundant activities. When unnecessary or accreted complexity in the problem being solved has been removed, you are left with necessary complexity that must be incorporated into the solution. Simple problems do not have complex solutions. Complex problems do not have simple solutions. The complexity factor of the proposed solution must match the complexity factor of the problem being resolved. Many system implementation and operational failures arise because of failure to understand and address the core complexity of the problem.