“When a schedule is not met, those inclined to pass out blame are quick to point at the lowest-level workers; they reason that performance is the domain entirely of those who perform the work. They ask plaintively, “Why can’t these guys ever meet their schedules?” The answer that the schedule might have been wrong in the first place only befuddles them. It’s as though they believe there is no such thing as a bad schedule, only bad performances that resulted in missing the scheduled date. There is such a thing as a bad schedule. A bad schedule is one that sets a date that is subsequently missed. That’s it. That’s the beginning and the end of how a schedule should be judged. If the date is missed, the schedule was wrong. It doesn’t matter why the date was missed. The purpose of the schedule was planning, not goal-setting. Work that is not performed according to a plan invalidates the plan. The missed schedule indicts the planners, not the workers.”