“…So, in line with these studies, as well as with Boschma, Marrocu, and Paci (2015) and Balland, Boschma, and Frenken (2015), we would like to call for analysis of the dynamics of personal and social proximity to show this co-evolution, most likely involving various other kinds of proximity. These types of studies would require longitudinal designs, mapping and tracing the development of social networks and personal relationships in industrial districts and clusters, or smaller scale collaborative innovation projects, as follows from Capone and Lazzeretti (2018) and Contreras Romero (2018).…”