In Seminar XVII, entitled The reverse side of psychoanalysis, Jacques Lacan presents his famous theorem of the four discourses. In this rereading I propose to demonstrate that Lacan’s theorem entails a transferable dialectical method for studying processes of knowledge production, enabling contemporary scholars to develop a diagnostic of the present, notably scholars interested in issues such as the vicissitudes of knowledge production under capitalism, the crisis of the university and the proliferation of electronic gadgets. In short, I will argue that (...) Lacan’s theorem of the four discourses entails a dialectical diagnostic of technoscientific knowledge during late capitalism. First, the four discourses will be briefly outlined, emphasising the extent to which they entail, albeit in an ambivalent manner, a return or detour to the logic of Hegel. Subsequently, each discourse will be presented in more detail, emphasising how they allow us to come to terms with the current status of technoscientific knowledge. Special attention will be given to the political backdrop of the seminar: the crisis of the university. Finally, I will discuss the historical dimension, outlining both the predecessor of the four discourses and their current predicament under neoliberal/capitalist conditions. (shrink)