PERT, CPM and the export process

PERT techniques logically arrange all related tasks involved in completing a major process. Tasks can be examined in relationship to each other and one can determine whether--and, if so, by how much--changes in the length of time to perform one task affect overall completion time. When applied to the export process, PERT techniques allow one to examine trade-offs between alternatives such as air and water shipping; and to calculate values of accelerating each task.