In this chapter, the author analyses processes of differentiation within situations of knowledge production and transfer. Therefore, he focuses specifically on two examples from the two neighbourhoods. The first example is the analysis of the city population by the City of Stuttgart in the 1970s. This analysis had the aim of gaining knowledge about the immigrated inhabitants in order to plan different measures. The second example is a research project about Pollokshields that had the aim of gaining general knowledge about the quality of life experience of people framed as an ethnic minority. In his analysis, the author takes aspects like the process of categorisation, information infrastructures as well as localisation of differences into account. Moreover, he shows how the topic of migration has changed statistics and the work of municipal administrations.