Conventional Work Breakdown Structures (WBS) in Software Project Management

Conventional work breakdown structures frequently suffer from three fundamental flaws.

1. They are prematurely structured around the product design.
2. They are prematurely decomposed, planned and budgeted in either too much or too little detail.
3. They are project specific and cross-project comparisons are usually difficult or impossible.

Source: Software Project Management by Barry W. Boehm