It seems obvious that signs in visual art and musical notation are static carriers of visual and acoustic information. Both types of sign, however, represent dynamic processes. In real space-time, there exists no static visible thing or static audible sound. The sources of visible or audible information are dynamic — ie. complementary substantial- energetic-informational — entities extending in space-time. The same is true of an artificial or organic receiver and processor of visual or audible information. Reality and semiosis — to be, to be perceived, and to be understood or to communicate — are dynamic processes. From a semiotic point of view, thus, pictures, photographic or artistic sign structures can’t be icons — in any case, if icons in a Peirceian manner are understood as signs representing objects for an interpretant by similarity (cf. Peirce 1994). Similarity between icon and object is not a static precondition but a dynamic result of visual semiosis, i.e. of categorizing. Seeing something or hearing something is, as a consequence, not an “intuitive” or instantaneous Gestalt shift between representamen and object ongoing in an interpretant. And so, according to Fernande Saint- Martin 1990: “visual semiotics … has to adopt an epistemology which is more in agreement with the dynamics of observed phenomena. It will recognize that matter is not inertness, but energy.