
A Systematic Approach n 27
meet the preset standard thermostat temperature. All mammals have a similar bio-
chemical process for ensuring a stable body temperature.
A Cybernetic System is designed to adjust the internal goal conditions (system
objectives) based on external impacts. For example, given the thermostat example,
a cybernetic system might detect that the reason for the temperature change is an
open or broken window, which would tell the system that turning on the cool-
ing/heat plant would be wasteful until the window is closed. e system goal is
now changed to ensuring that the window is closed, which may be implemented
by signal