You may have noticed how each of the deliverables mentioned earlier represents one of two perspectives on the project: business or engineering. On many projects, these two views compete with each other. This is a fundamental planning mistake. Planning should rarely be a binary, or either/or, experience. Instead, it should be an integration and synthesis of what everyone can contribute. To make this happen, a project manager must recognize that each perspective contributes something unique that cannot be replaced by more of something else (., no amount of marketing strategy will improve engineering proficiency, and vice versa). For good results, everyone involved in project planning must have a basic understanding of each.
