Only connect? Network analysis and religious change in the Roman Empire

The emergence during the Roman Empire of new religious forms and groups alongside the collective cults of the city and ruler worship invites analysis in terms of various kinds of network theory. Some of the main versions of network theory currently in use are examined, and their applicability to ancient material is discussed and assessed. Network thinking turns out to be very useful, but the problems in conducting a more formal network analysis are formidable. Network theory does allow us to approach religious change from new directions and two models of change in current use - conversion as contagion, and religious change as the spread of ideas - are examined. Thinking about religious change in these terms forces historians to formulate more precise descriptions of change as a process that involves socialization and the routinization of new habits and rituals, as well as a process of learning a new way of imagining and describing the cosmos.This article was part of an issue of the journal containing the dossier Religiões no Mundo Antig