The document outlines key tenets, factors, and models of communication, emphasizing that communication is pervasive, continuous, and complex. Several communication models are discussed, including Aristotle's speaker-focused model, Laswell's one-way model, Shannon and Weaver's information theory model, Jakobson's six functions of language, Berlo's linear model, and Schramm's interactive model. Additionally, it highlights the importance of the gatekeeper model in mass communication, which underscores the role of media in controlling information dissemination.