In this paper we position ourselves against idealist presuppositions so frequent in the humanities and social sciences, and, particularly, in communication theory. We argue that a realist approach to the study of communication avoiding such implausible assumptions is not only possible, but has already been exemplified in proposals that take communication to be a phenomenon with a biological origin. We argue that this sort of perspective can account for the variety of communicative functions we encounter in human experience, including the (...) ones involving senses. (shrink)