Cosgrove advocates treating all plans, milestones, and schedules as tentative, so as to facilitate change. This goes much too far—the common failing of programming groups today is too little management control, not too much. Nevertheless, he offers a great insight. He observes that the reluctance to document designs is not due merely to laziness or time pressure. Instead it comes from the designer's reluctance to commit himself to the defense of decisions which he knows to be tentative. "By documenting a design, the designer exposes himself to the criticisms of everyone, and he must be able to
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