Modifica di System logic (sezione)

===Medical language logic===
[[File:Universe (classical and fuzzy logic).jpg|thumb|400px|alt=The universe of classical and fuzzy logic|'''Figura 3:''' The universe of classical and fuzzy logic.]]
In the previous chapters we highlighted the extreme difficulties we met in defining an exact, detailed and timely diagnosis in the right time; and this is not only due to the 'Complexity' of the living system, but also to a questionable and vague logic of medical language. If [[classical logic]] is too selective (<code>true</code> or <code>false</code>, and therefore 'there is no third answer' - principle of the excluded third), it is also true that [[probabilistic logic language]], which trivially indicates the presence of a specific disease, breaks down in the 'significativity' parameter that acquires a certain value only in a 'specialist context'.

We perceived the need for a more elastic model called "fuzzy logic" that could translate the uncertainty inherent in some human language data into mathematical formalism, codifying the "elastic" concepts (such as almost high, fairly good, etc), in order to make them understandable and manageable by computers. 

We have therefore frozen a much debated and approached concept in the chapter '[[Introduction]]': not determining a clear separation between specialist know-how, but superimposing interdisciplinary knowledge, instead, through a 'Fuzzy' approach (see [[fuzzy logic language]]).  

{{q2|But it is not so obvious to arrive at a more formal language in the medical field where events are complex and dynamic and, as we will see, they are not trivially deterministic. In order to better understand the 'System Logic', and at the same time introduce the concept of clinical 'Indices', it is necessary to start with the description of the 'Systems Theory' |}}