A fine but sometimes ridiculous expression used by the architects to name the type of reasoning they use during the design process. It uses a complex logic, difficult to formalize because of the multitude of elements which it operates with and of the wide variety of domains from which they draw from, but is in most cases not superior in means and mechanism to the common logic. The professional jargon does not take place to the concepts, the theories learned in school seem to be easy to ridicule by

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