This essay represents part of an effort to rewrite the history metaphysics in terms of what philosophy never said, nor could say. It works from the Neoplatonic commentary tradition on Plato's Parmenides as the matrix for a distinctively apophatic thinking that takes the truth of metaphysical doctrines as something other than anything that can be logically articulated. It focuses on Damascius in the 5—6th century AD as the culmination of this tradition in the ancient world and emphasizes that Neoplatonism represents (...) the crisis of Greek metaphysics on account of the inability to give a rational account of foundations for knowing and of the ultimate principle of beings. Neoplatonism discovered how all such ultimate principles were necessarily beyond the reach of reason and speech. This apophatic insight is drawn out with the help of contemporary criticism of Neoplatonic philosophy, defining also some points of divergence. The essay then discusses the motives for thinking the unsayable in postmodern times on the basis of this parallel with Neoplatonic thought. Discourse's becoming critical of itself to the point of self-subversion animates them both. However, the tendency in postmodern thought to totally reject theology, including negative theology, is a betrayal of its own deepest motivations. This tendency is debated through an examination of the thought of Jean-Luc Nancy. While any traditional discourse can be negated, the negating and self-negating capacity of discourse itself is infinite, and this is where a perennial negative theological philosophy of the unsayable is to be located. Language, eminently the language of philosophy, as infinitely open, points in a direction which becomes equally and ineluctably theological. (shrink)

This thesis discusses the potential consequences of applying the philosophy of Mark C. Taylor to the field of Human-Computer Interaction. The first part of the thesis comprises a study focusing on two discursive trends in contemporary HCI, materiality and the self, and how these discourses describe interaction. Through a qualitative, inductive content analysis of 171 HCI research articles, a number of themes are identified in the literature and, it is argued, construct a dominant perspective of materiality, the self, and interaction. (...) Examples that differ from the dominant discourse are also discussed as alternative perspectives for each of the three focal areas. The second part of the thesis comprises an analysis of Mark C. Taylor’s philosophical project which enables a number of philosophical positions on materiality, the self, and interaction to be identified. These positions are suggested to be variations and rereadings of themes found in Friedrich Nietzsche’s philosophy. These variations emerge as Taylor approaches Nietzsche through poststructuralism and complexity theory, and it is argued that the apparent heterogeneity of Taylor’s project can be understood as a more coherent position when interpreted in relation to Nietzsche’s philosophy. Based on the findings of the two literature studies, the thesis then discusses the possible consequences for HCI, if Taylor’s philosophy were to be applied as a theoretical framework. The thesis argues that Taylor’s philosophy describes the interaction between humans and computers as an existential process, which contrasts with the dominant HCI discourse; that this view can be related to and provide a theoretical foundation for the alternative discourses in HCI; and that it can contribute to developing HCI. (shrink)