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Soulignant la nécessité de distinguer les couleurs des surfaces de celles des matières, mais aussi les couleurs éclairantes des couleurs éclairées, l'analyse wittgensteinienne ne cesse de faire paraître, le long d'un débat avec Goethe et d'une interrogation de la transparence, la complexité de cette logique que ne soupçonne même pas notre stupidité quasi "bovine", pour finalement mettre en cause l'idée même de théorie. S'adressant en priorité au peintre, les Remarques sur les couleurs découvrent la question de la couleur comme "problème phénoménologique", ce en quoi elles constituent un aspect décisif de la toute dernière étape du cheminement wittgenstenien.

Philosophe --- Couleur --- Wittgenstein, Ludwig Josef

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Peinture --- Concours National Trait Couleur Volume --- Exposition --- CCB Crédit Communal de Belgique

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Why do visual signals have the characteristics that they do? Why do animals (including man) gesture, posture, and move in communicative fashions? Why are animals colored and patterned in particular ways? Optical Signals is the first attempt to answer these and related questions. After presenting a synthetic framework of social communication, ethology, mathematical information theory, and semiotics, Hailman explains the relevant background: considerations of the physics of light that carry information from sender to receiver, and properties that limit the receiver's ability to get and send information encoded in light. Next Hailman puts together data from different disciplines in order to discover the "design characteristics" of optical signals. The major part of the book concerns these design characteristics and factors that influence them: behavioral patterns and coloration that look like visual signals but are not, principles of visual deception, and the way in which the physical and biological environment structures the characteristics of signals. Lastly, the book considers how the message being transmitted influences the design of the signal itself.

Tiere. --- Optisches Signal. --- Kommunikation. --- Animals --- Animal communication. --- Animaux --- Communication animale. --- Color. --- Couleur. --- Animal biocommunication --- Animal language --- Biocommunication, Animal --- Language learning by animals --- Animal behavior --- Animal coloration --- Coat color of animals --- Color of animals --- Coloration in animals --- Color in nature --- Animal pigments --- Literary theory