 In addition to false or misleading content, ideological beliefs typically have at least two additional characteristics, relating to their social origin and their class function. By the “social origin” of ideology is meant that Marx thinks of these ideas as often originating with, and being reinforced by, the complex structure of class-divided societies—a complex structure in which a deceptive surface appearance is governed by underlying essential relations (Geras 1986: 63–84). Capitalism is seen as especially deceptive in appearance; for example, Marx often contrasts the relative transparency of “exploitation” under feudalism, with the way in which the “wage form” obscures the ratio of necessary and surplus labour in capitalist societies. Ideology stems, in part, from this deceptive surface appearance which makes it difficult to grasp the underlying social flaws that benefit the economically dominant class. Marx portrays the striving to uncover essences concealed by misleading appearances as characteristic of scientific endeavour (MECW 37, 804). And, in this context, he distinguishes between classical political economy, which strove—albeit not always successfully—to uncover the essential relations often concealed behind misleading appearances, and what he calls vulgar economy, which happily restricts itself to the misleading appearances themselves (MECW 37, 804).