Abstract
One influential approach seeks to capture the idea of society by characterising social action, or interaction, in terms of the particular kinds of awareness it involves. Another approach focuses on social order, seeing it as a form of order that arises spontaneously when rational and mutually aware individuals succeed in solving co-ordination problems. Yet another approach focuses on the role played by communication in achieving collective agreement on the way the world is to be classified and understood, where this is seen as a pre-condition of co-ordination and co-operation. This encyclopedia entry provides a brief account of each approach and offers an assessment of their stengths and limitations.