Project managers sometimes discover there are multiple versions of the truth existing within their team. One sub-group thinks it’s on track—in reality, they’re working from a schedule that’s out of date. Another department is late on several key activities, but they haven’t updated the master plan so no one else is aware of the delays that will soon affect their own scheduling. Or an outside vendor has almost completed a custom piece of equipment. Unfortunately, they don’t realize the specifications have since changed.