In Marxist theory, human society consists of two parts: the base (or substructure) and superstructure; the base comprises the forces and relations of production—employer–employee work conditions, the technical division of labour, and property relations—into which people enter to produce the necessities and amenities of life. These relations determine society’s other relationships and ideas, which are described as its superstructure. The superstructure of a society includes its culture, institutions, political power structures, roles, rituals, and state. The base determines (conditions) the superstructure, yet their relation is not strictly causal, because the superstructure often influences the base; the influence of the base, however, predominates. In Orthodox Marxism, the base determines the superstructure in a one-way relationship.