James Grier Miller

# Pecking order in birds or other animals.

# Political distance among political parties of the right and left.

# A space of frequency of intermarriage among ethnic groups.

General systems theory is a series of related definitions, assumptions, and postulates about all levels of systems from atomic particles through atoms, molecules, crystals, viruses, cells, organs, individuals, small groups, societies, planets, solar systems, and galaxies. General behavior systems theory is a subcategory of such theory, dealing with living systems, extending roughly from viruses through societies. A significant fact about living things is that they are open systems, with important inputs and outputs. Laws which apply to them differ from those applying to relatively closed systems.

In such fundamental considerations it would be surprising if many new concepts appear, for countless good minds have worked long on these matters over many years. Indeed, new original ideas should at first be suspect, though if they withstand examination they should be welcomed. My intent is not to create a new school or art form but to discern the pattern of a mosaic which lies hidden in the cluttered, colored marble chips of today's empirical facts.

Scientific observers often view living systems as existing in spaces which they conceptualize or abstract from the phenomena with which they deal. Examples of such spaces are:

The structure of a system is the arrangement of its subsystems and components in three-dimensional space at a given moment of time. This always changes over time. It may remain relatively fixed for a long period or it may change from moment to moment, depending upon the characteristics of the process in the system. This process halted at any given moment, as when motion is frozen by a high-speed photograph, reveals the three-dimensional spatial arrangement of the system's components as of that instant.

General systems theory is a set of related definitions, assumptions, and propositions which deal with reality as an integrated hierarchy of organizations of matter and energy. General systems behavior is concerned with a special subset of all systems, the living ones. Even more basic to this presentation than the concept of "system" are the concepts of "space," "time," "matter," "energy," and "information," because the living systems which I shall discuss exist in space and are made of matter and energy organized by information.

The term system has a number of meanings. There are systems of numbers and of equations, systems of value and of thought, systems of law, solar systems, organic systems, management systems, command and control systems, electronic systems, even the Union Pacific Railroad system. The meanings of "system" are often confused. The most general, however, is: A system is a set of interacting units with relationships among them. The word "set" implies that the units have some common properties. These common properties are essential if the units are to interact or have relationships. The state of each unit is constrained by, conditioned by, or dependent on the state of other units. The units are coupled. Moreover, there is at least one measure of the sum of its units which is larger than the sum of that measure of its units.

# Sociometric space, e.g., the rating on a scale of leadership ability of each member of a group by every other member.

In 1978 when the book Living Systems was published, it contained the prediction that the sciences that were concerned with biological and social sciences would, in the future, be stated as rigorously as the “hard sciences” that study such nonliving phenomenon as temperature, distance, and the interaction of chemical elements. Principles of Quantitative Living Systems Science, the first of a planned series of three books, begins an attempt to fulfill that prediction...
It is our opinion that this book represents an important step in the development of a quantitative living systems science... As Simms shows, the concepts of available energy and the capacity to direct energy, as well as the causative relationship between information and behavior, are useful in the analysis of behavior... The systems with which this first book of the series is concerned are mainly at the level of the cell and the animal organ and organism.... It will be interesting to see how the science is applied in later volumes to the complex behaviors of human being, and higher level systems.

In the most general mathematical sense, a space is a set of elements which conform to certain postulates.

# The life space of Lewin, - the environment as seen by the subject, including the field forces or valences between him and objects in the environment, which can account for his immediately subsequent behavior.

More concrete, physical space is the extension surrounding a point. It may be thought of as either the compass of the entire universe or some region of such a universe.

# A space representing the shortest distances for messages to travel...