Limitations of Current PM Methodologies
To date, improvements to PM tools have been evolutionary and not revolutionary. All the PM tools are still based on the PERT/CPM approach. The improvements that occur with each round of new PM tools are merely “bells and whistles” (e.g., better tracking of resources, uploading from spreadsheets) or perhaps enabling the tool to be used over the internet. Unfortunately, a 50-year old methodology delivered over the internet is still a 50-year old methodology. Fundamentally, the PERT/CPM approach suffers from three (3) major flaws: Task duration is an input. However, many factors (e.g., availability and productivity of resources, dependencies among tasks, hours worked by employees) affect the duration of a task. Thus, in the real world, task duration is actually an output . Productivity impacts are not considered. In current PM tools, labor can be added to or removed from a task with no impact on the productivity of labor applied to the task....