stairways creating a sense of neurotic unease and contradicting the structural purpose of the column. The Wexner Center deconstructs the archetype of the castle and renders its spaces and structure with conflict and difference. Deconstructivist philosophy Some Deconstructivist architects were influenced by the French philosopher Jacques Derrida. Eisenman was a friend of Derrida, but even so his approach to architectural design was developed long before he became a Deconstructivist. For him Deconstructivism should be considered an extension of his interest in radical formalism. Some practitioners of deconstructivism were also influenced by the formal experimentation and geometric imbalances of Russian constructivism. There are additional references in deconstructivism to 20th-century movements: the modernism/postmodernism interplay, expressionism, cubism, minimalism and contemporary art. Deconstructivism attempts to move away from the supposedly constricting 'rules' of modernism such as "form follows function," "purity of form," and "truth to materials." The main channel from deconstructivist philosophy to architectural theory was through the philosopher Jacques Derrida's influence with Peter Eisenman. Eisenman drew some philosophical bases from the literary movement Deconstruction, and collaborated directly with Derrida on projects including an entry for the Parc de la Villette competition, documented in Chora l Works. Both Derrida and Eisenman, as well as Daniel Libeskind were concerned with the "metaphysics of presence," and this is the main subject of deconstructivist philosophy in architecture theory. The presupposition is that architecture is a language capable of communicating meaning and of receiving treatments by methods of linguistic philosophy. The dialectic of presence and absence, or solid and void occurs in much of Eisenman's projects, both built and unbuilt. Both Derrida and Eisenman believe that the locus, or place of presence, is architecture, and the same dialectic of presence and absence is found in construction and deconstructivism. According to Derrida, readings of texts are best carried out when working with classical narrative structures. Any architectural deconstructivism requires the existence of a particular archetypal construction, a strongly-established conventional expectation to play flexibly against. The design of Frank Gehry’s own Santa Monica residence, (from 1978), has been cited as a prototypical deconstructivist building. His starting point was a prototypical suburban house embodied with a typical set of intended social meanings. Gehry altered its massing, spatial envelopes, planes and other expectations in a playful subversion, an act of "de"construction" In addition to Derrida's concepts of the metaphysics of presence and deconstructivism, his notions of trace and erasure, embodied in his