Pluralism is a form of diversity, which at the application layer is not only a good virtual, but also a necessity according to Ashby’s law of cybernetics, according to which a system must have a Requisite Variety (a sufficient number of states in variations) in order to survive a varying environment.
However, the study of cybernetics also reveals another fundamental principle: for a system to support a requisite variety, it must have unity at the base that defines its core purpose and coherence.