In offering a preliminary exposition of the main concepts of structuration theory¹ it will be useful to begin from the divisions which have separated functionalism (including systems theory) and structuralism on the one hand from hermeneutics and the various forms of "interpretative sociology" on the other. Functionalism and structuralism have some notable similarities, in spite of the otherwise marked contrasts that exist between them. Both tend to express a naturalistic standpoint, and both are inclined towards objectivism. Functionalist thought, from Comte onwards, has looked particularly towards biology as the science providing the closest and most compatible model for social science. Biology has been taken to provide a guide to conceptualizing the structure and the functioning of social systems and to analysing processes of evolution via mechanisms of adaptation. Structuralist thought, especially in the writings of Levi-Strauss, has been hostile to evolutionism and free from biological analogies. Here the homology between social and natural science is primarily a cognitive one in so far as each is supposed to express similar features of the overall constitution of mind. Both structuralism and functionalism strongly emphasize the pre-eminence of the social whole over its individual parts (i.e., its constituent actors, human subjects).