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Medical Definition of CYBERNETICS. : the science of communication and control theory that is concerned especially with the comparative study of automatic control systems (as the nervous system and brain and mechanical-electrical communication systems).
Media theory refers to the complex of social-political-philosophical principles which organize ideas about the relationship between media and society. Within this is a type of theory called `normative theory', which is concerned with what the media ought to be doing in society rather than what they actually do. In general, the dominant ideas about the obligations of mass media will be consistent with other values and arrangements in a given society.