AUD SISSEL HOEL is Associate Professor of Visual Communication at the Norwegian University of Science and Technology. She is the author of Maktens bilder (Disciplinary Images) (2007), Fremstilling og teknikk (Exposition and Technology) (2005), and numerous essays about pictures, scientific imaging and the philosophy of vision, and co-editor of Ernst Cassirer: Form og teknikk: Utvalgte tekster (Form and Technology: Selected Essays) (2006). INGVILD FOLKVORD is Associate Professor of German literature at the Norwegian University of Science and Technology. She is the author of Sich ein Haus schreiben: Drei Texte aus Ingeborg Bachmanns Prosa (2003), has authored and co-edited several publications on modern literature, media culture and literacy and translated Ingeborg Bachmann ('Undine geht') and Ernst Cassirer (selected essays).