Anthropology, and other disciplines have searched for isomorphic principles and rules operating in information systems. This thesis locates and describes this deep structure applicable to all information systems. It presents a model for information flow as a set of ordering principles revealing universal patterns inherent in nature, a set of transformation rules functioning to increase organization and complexity, and a structure for this activity. The model is isomorphic: it demonstrates similar operational behavior in different systems. Major features of the model include polarity, emergent or transformational phenomena, self-organization, and a trajectory traveling through a hierarchical structure representing the flow of information. Polar opposition is the primary functional mechanism, and has two critical roles. It initiates and maintains the trajectory through time and stabilizes the system by representing existence in time. The author applies the model to consciousness, neurogenesis, ontogeny, social behavior, mythology, rites of passage, and other systems. / Department of Anthropology