attempts to provide a platform on which these issues can be explored. It asserts that communication occurs in the intersection of four fundamental constructs: communication between people (creators and consumers) is mediated by messages which are created using language within media; consumed from media and interpreted using language.This model is, in many ways, a more detailed elaboration of Lasswell's (1948) classic outline of the study of communication: "Who ... says what ... in which channel ... to whom ... with what effect". In the ecological model , the "who" are the creators of messages, the "says what" are the messages, the "in which channel" is elaborated into languages (which are the content of channels) and media (which channels are a component of), the "to whom" are the consumers of messages, and the effects are found in various relationships between the primitives, including relationships, perspectives, attributions, interpretations, and the continuing evolution of languages and media.