The network metaphor dominates current thinking about national security. Network centricity carried to its logical conclusion, however, portends an environment that becomes increasingly biological over time. Biological environments lend themselves to nonlinear effects and outcomes. The path toward biological transformation in defense may express itself in a number of ways. It may impact the nature of system development, the operational concepts that leverage these systems and the business models that will be used by industry and government to field these new capabilities.

http://www.armedforcesjournal.com/2008/05/3434676