The ‘special language’ distinguishes itself from scientific language in that it conceals heteronomy behind the appearance of autonomy: being unable to function without the aid of ordinary language, it must produce the illusion of independence through strategies which create a false break, using procedures that differ according to the field and. when in the same field, according to positions and moments. This language can, for example, mimic the fundamental property of all scientific language: the determination of an element through its membership of a system? The words which pure science borrows from ordinary language derive their entire meaning from the system constructed, and the option (often inevitable) of resorting to a common word rather than a neologism or a pure and arbitrary symbol can only be chosen - in keeping with a correct methodology -through the desire to utilize the capacity sometimes possessed by language to portray hitherto unsuspected relations, when it functions as a depository for a collective endeavour.4 The word 'group1 used by mathematicians is a perfectly self-sufficient symbol because it is entirely defined by the operations and the relations which define its specific structure and which are the source of its properties. Conversely, most of the special usages of the word that are listed by dictionaries (e.g. in painting, ‘the gathering of several characters constituting an organic unity in a work of art1, or in economics, ‘a set of enterprises united by diverse links’) have only a low level of autonomy in relation to the first meaning and would remain unintelligible for anyone who did not have a working knowledge of that meaning.
The Heideggerian words that are borrowed from ordinary language are numberless, but they are transfigured by the process of imposing form which produces the apparent autonomy of philosophical language by inserting them, through the systematic accentuation of morphological relations, into a
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