The longest path is the critical path which is defined as the path that will cause the whole project to fall behind if even one day's delay is encountered on it. Leeway on non-critical path is called slack time . Advantages of Project Network Easy identification of the order of precedence of activities. Easy identification of the critical path and thus critical activities. Easy determination of slack time.
Task is to paint an old fashioned, rectangular wooden army barracks.
Fifteen soldiers under your command. Three distinct steps Old loose paint scraped from walls. New paint is applied. Razor blades used to remove excess paint from the windows. One Approach Scrape all walls, then paint all walls, then remove excess paint from around windows.