Changing the Plan
It would be nice to think that a plan, once developed, would never change. However, that is unrealistic. No one has 20/20 foresight. Unforeseen problems are almost certain to arise. The important thing is to make changes in an orderly way, following a standard change procedure.
Encourage people to spot problems during the sign-off meeting, not later.
If no change control is exercised, the project may wind up over budget, behind schedule, and hopelessly inadequate, with no warning until it is too late. Here are suggestions for handling changes to the plan:
Changes should be made only when a significant deviation occurs. A significant change is usually specified in terms of percent tolerances relative to the original targets. ...
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