ways constructing new strings of solutions free from any theorem but founded on the correct use of the few but immutable rules with which to relate symbols without active' meanings. This doesn't prevent any theorem of empirical experience from being inserted into the "rules of imaginations" [Hofstadter, 1979] which preside over the chosen formal system. When this happens, between one system and the other are established isomorphisms [Hofstadter, 1979] capable of revealing portions of truth that are coherent with the natural world. The result is not predictable, but is the outcome of a formative process which, by virtue of its actualizing modality, can overcome the limits of human comprehension.Each architectural work can be considered a living organism: its life includes the definition of the idea, the law that governs it and the formative process which is realised in the material it forms [Vattimo, 1976]. The finished work is not the result of a linear process as much as the outcome of a formative process whose fluid dynamics derives only minimally from the precision of deductive-inductive logic."FUZZY" LOGIC IN THE PROJECTS OF PETER EISENMANIn architecture it is possible to demonstrate, as Peter Eisenman states, "...all the changes can in some way refer to cultural changes... the most tangible changes... were determinated by technological progress, by the development of new conditions of use and by the change in meaning of certain rituals and their field of representation" [Eisenman, 1989]. Thus in the simple use of geometric solids, he limits himself to the promotion of a language orientated with a correspondent systematic order.In the spatial manipulations of plans and sections, Eisenman experiments with the "laws of thought" (1854) put in place in the nineteenth century by George Boole and Augustus De Morgan. In the same way that the two English logicians brought to extreme consequences the Aristotelian syllogisms which prelude to ...
