Article: On Societies of Organisms

This article stresses the viewpoint of seeing a society as one single organism.  Truly, when a society work in harmony, then each person does his/her own job but all of the jobs are here to build up a society.  This may be true in a utopia world, but in a real world, can a simply scientific model explain politics, economic, and social behaviors?  I do not believe that a society can preform like a single organism.  Because unlike organelles or cells in a smaller unit that simply do their work, humans are capable of thinking on their own.  Multiple conflicts among nations already happened to prove that some people do not work for the better of society, but for their own personal gain.  If this is true, then the analogy between society and organism can be seen as a fallacy.