The paper investigates the mechanics through which novel technological principles are developed and diffused throughout an economy consisting of a technologically heterogeneous ensemble of firms. In the model entrepreneurs invest in the discovery and in the diffusion of a technological principle...

In this paper, we aim at re-assessing the undisputed positive relationship between innovation and economic growth by questioning the view that R&D (and formal knowledge in general) equates innovation and innovation equates regional growth. We rather propose that these linkages are strongly...