For many years, the concept of cognitive capitalism has been an important subject for elaboration, discussions, and polemics. In this essay, we will not summarize the various theoretical details of the debate; instead, we will try to clarify the political nature of the concept and examine what is at stake from a theoretical point of view. Then, we will give some provisional and explorative answers to some of the central questions on cognitive capitalism: What does it mean? In what sense is it useful as a tool for the struggles? What kinds of class composition and antagonist subjectivity are embodied in this concept? First, we will explain why cognitive labour does not identify a particular sector of the class composition. We will use the t...