The social context of a society is both an input and an output of the deliberative system. As Granovetter argued, “actors do not behave or decide as atoms outside a social context, nor do they adhere slavishly to a script written for them by the particular intersection of social categories that they happen to occupy. Their attempts at purposive action are instead embedded in concrete, ongoing systems of social relations” (Granovetter, 1985). This “problem of embeddedness” manifests in a scholarly tension between studying the role of individual agency and the structures that shape available actions.
Consider, for example, the presence of homophily in social networks. A priori, there is no reason to attribute such a feature to a single mechanism. Perhaps homophily results from individual preference for being with ‘like’ people, or perhaps it results primarily from the structural realities within which agents are embedded: we should not be surprised that high school students spend a great deal of time with each other.
From a deliberative perspective, widespread homophily is deeply disconcerting. Networks with predominately homophilous relationships may indicate disparate spheres of association, even while maintaining a global balance on the whole. The linking patterns between an equal number of liberal and conservative blogs, for example, reveals distinctively separate communities rather than a more robust, crosscutting public sphere (Adamic & Glance, 2005).
Such homophily is particularly troubling as diversity of thought is arguably one of the most fundamental requirements for deliberation to proceed. Indeed, the vision of democratic legitimacy emerging from deliberation rests on the idea that all people, regardless of ideology, actively and equally participate (Cohen, 1989; Habermas, 1984; Mansbridge, 2003; Young, 1997). A commitment to this ideal has enshrined two standards – respect and the absence of power – as the only elements of deliberation which go undisputed within the broader field (Mansbridge, 2015). Furthermore, if we are concerned with the quality of deliberative output, then we ought to prefer deliberation amongst diverse groups, which typically identify better solutions than more homogenous groups (Hong, Page, & Baumol, 2004). Most pragmatically, homophily narrows the scope of potential topics for deliberation. Indeed, if deliberation is to be considered as an “ongoing process of mutual justification” (Gutmann & Thompson, 1999) or as a “game of giving and asking for reasons” (Neblo, 2015), then deliberation can only properly take place between participants who, in some respects, disagree. In a thought experiment of perfect homophily, where agents are exactly identical to their neighbors, then deliberation does not take place – simply because there is nothing for agents to deliberate about.