Narrative theory analyzes how media texts communicate meaning about events through organized spatial and temporal relationships. It views narrative as a chain of causally linked events that have a beginning, middle, and end embodying a judgment about the nature of those events. Various theorists have proposed models for analyzing narratives, including Propp's characterization types, Todorov's equilibrium stages, Barthes' codes, and Levi-Strauss' exploration of binary oppositions reflecting a culture's values. More recent trends include nonlinear and self-reflexive postmodern narratives. Narrative analysis examines how elements like editing, camerawork and sound construct meaning for audiences.