However, the authors also identified another crucial difference between the two types of project, namely what type of outcome or product is being produced? This inevitably determines the type of work required to produce the product. In this respect the authors concluded that the following much simplified differentiation is evident:
"A. 'Tangible' Product
A tangible product is one in which the primary value is in the physical artifact. It is the value of the artifact that distinguishes it from other products. A new building is a well-recognized example of this type of product.
B. 'Intangible' Product
An intangible product is one in which the value is in its intellectual property. Although there is some physical result, this is not the essence of the product. The essential feature is new information and its physical aspect is only a vehicle for its conveyance and transformation. Software is a prime example."