In this episode, the dialectic goes to work to explore one of the most fundamental concepts in Marxism: class and class analysis. What is class? What do Marxists mean when they deploy this term? In this episode we discover, via the seminal book Knowledge and Class, how the concept of surplus is used to develop a theory of classes in society. The fundamental and subsumed class framework, first developed by Resnick and Wolff, provides a non-essentialist approach to classes. Prof Wolff and Prof Azhar discuss how multiplicities of class processes can coexist at any point in time and pull and push individuals, communities, and nations in different trajectories.