To neglect one of these tasks in favor of the other is like choosing which way one prefers to die. Not managing the plan is a slower means of death, perhaps, but it is still death. The purpose of a plan is to ensure that budget dollars are spent wisely in the pursuit of meaningful business objective accomplishments. One cannot have a plan without a budget and one shouldn't have a budget without a plan. Levels of Planning.
Process reengineering begins with planning.
Planning provides the context for developing a process vision, which is the fundamental driver of all reengineering efforts. The more radical the reengineering objective, the more important it is to associate process reengineering efforts with strategic and business goals and objectives. Planning also determines the measures and critical success factors that will be used to evaluate the success of reengineering projects. Planning defines the destination, while the process reengineering project provides the vehicle. There is much truth in the aphorism that if you don't know where you are going, any road will get you there.