The relationship of the internal security system to group level organization in Miller's living systems theory.

It has been suggested that a 20th subsystem, the internal security subsystem, should be added to Miller's 19 matter-energy and information processes that are critical to living systems (Bosserman, 1982). This subsystem protects all levels of living systems from error and disruption resulting from internal and external sources. Yet many characteristics of the proposed security subsystem already are found in existing ones, that is, the reproducer, channel and net, and distributor. Therefore, a discrete internal security subsystem is not justified. There are, however, dormant aspects of the security system that are not described within the existing taxonomy that perhaps best fit as a mirror system across the organizational levels.