Editing Complex system (section)

=== Decomposability ===
A system is '''decomposable''' if the parts of the system (subsystems) are independent from each other, for exemple the model of a [[perfect gas]] consider the relations among molecules negligeable.<ref name=":1">{{Cite journal |last=Simon |first=Herbert A. |date=1962 |title=The Architecture of Complexity |url=https://www.jstor.org/stable/985254 |journal=Proceedings of the American Philosophical Society |volume=106 |issue=6 |pages=467–482 |jstor=985254 |issn=0003-049X}}</ref> 

In a '''nearly decomposable''' system, the interactions between subsystems are weak but not negligeable, this is often the case in social systems.<ref name=":1" /> Conceptually, a system is nearly decomposable if the variables composing it can be separated into classes and subclasses, if these variables are independent for many functions but affect each other, and if the whole system is greater than the parts.<ref>{{Cite journal |last=Ostrom |first=Elinor |date=2007 |title=Sustainable Social-Ecological Systems: An Impossibility? |url=http://www.ssrn.com/abstract=997834 |journal=SSRN Electronic Journal |language=en |doi=10.2139/ssrn.997834 |issn=1556-5068|hdl=10535/3826 |hdl-access=free }}</ref>