In the Evolution of Technology, George Basalla gives a rather complete account of these various frameworks. Part of our study is influenced by the work of the French philosopher George Simodon. In Du Mode d’Existence des Objets techniques, Simondon articulates the role of the concretization process, the way technical sub-systems merge to create better integrated entities in a general evolutionary framework. This process is also at work for cultural tools and plays a major role in the evolution of regulated representations.