So once you know you are doing is the right thing, then being as efficient (productive) as possible delivers real value. However this doesn’t mean maximizing productivity everywhere. In a project, the quickest way of delivering a project is to focus on its critical path as it represents that sequence of interdependent (both resource and logical) activities that represent the longest path to project completion. It isn’t surprising that many projects fail to achieve this focus because they question the integrity of the schedule, use earned value to measure project progress or allow work to expand to fill the time allocated.