In the dialectic formal Eisenman, the procedures for projecting initially start from the consideration of architectural form as a transformation of a solid geometric pre-existing. Subsequently, the form is timeless, decomposed into spatial entities, non-specific, requiring the intellectualization of the process as an alternative to emotion perception. From the eighties, mediated by computer resources, self-referentiality is the keynote of the representational process and architectural experience. The search houses poetic diagrams as procedures for projecting computer, tangent now the concept of trail’ Derrida responsible for the intelligibility and readability of architecture, sometimes grotesque, or a rationale that contains the irrational.