The second pass calculates the late start and finish activities from the latest finish date backwards.
Slack is the amount of time a task can be delay ed without delay ing the project completion date.
A great advantage of this method is the fine-tuning that can be done to accelerate the project. By experiment ing in this manner, the optimal project schedule can be determined. The latter is the most valuable for project management purpose s. It is the distinguishing feature between project accounting for cost control purpose s and financial accounting for fiscal control purposes. The calendar used in developing a project plan .