Jairus Banaji associates the concept of a social formation (involving modal combination, or the articulation of modes of production) with “vulgar Marxism.” This includes both the Marxism of the Second International and the structuralist Marxism of Louis Althusser. Banaji is critical of those Marxists who employ the concept because in his view they are insufficiently sensitive to the complexities of history. His reasons for thinking this may be subjected to an immanent critique. Such a critique attempts to show that, given an argument's starting assumptions, a different (perhaps even the opposite) conclusion from that which is drawn by its author is possible. Applying this idea to the work of Banaji, it can be demonstrated that his rejection of the concept of a social formation is not required by his own theoretical assumptions and that endorsement of the concept is consistent with them.