• The paradigm of complex systems

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Scholars in Complexity

                             Stuart A. Kauffman:    

  " The past three centuries of science have been predominantly reductionist, attempting to break complex systems into simple parts, and those parts, in turn, into simpler parts. The reductionist program has been spectacularly successful, and will continue to be so. But it has often left a vacuum: How do we use the information gleaned about the parts to build up a theory of the whole? The deep difficulty here lies in the fact that the complex whole may exhibit properties that are not readily explained by understanding the parts. The complex whole, in a completely nonmystical sense, can often exhibit collective properties, "emergent" features that are lawful in their own right. "

                                           http://en.wikipedia.org/wiki/Stuart_Kauffman 

Robert Rosen:

A system is complex if it has non computable models. A system is complex if it has models which are themselves complex.

    http://www.panmere.com/rosen/