The theory of structuration is a social theory of the creation and reproduction of social systems that is based in the analysis of both structure and agents (see structure and agency), without giving primacy to either. Further, in structuration theory, neither micro- nor macro-focused analysis alone are sufficient. The theory was proposed by sociologist Anthony Giddens, most significantly in The Constitution of Society, which examines phenomenology, hermeneutics, and social practices at the inseparable intersection of structures and agents. Its proponents have adopted and expanded this balanced position. Though the theory has received much criticism, it remains a pillar of contemporary sociological theory.