General System Theory by Bertalanffy

Bertalanffy’s General System Theory

Ludwig von Bertalanffy’s General System Theory (GST) is one of the foundational intellectual sources of the modern systems movement. Developed from his work in theoretical biology and most fully presented in General System Theory: Foundations, Development, Applications, GST proposed that many phenomena across biology, psychology, the social sciences, and technology could not be adequately understood by reducing them to isolated parts. Instead, they had to be studied as organized wholes: systems whose properties arise from the dynamic relations among their components. Bertalanffy’s contribution was not simply to add another theory within biology, but to articulate a general scientific orientation for studying organization, wholeness, interaction, and emergence across domains.

Historical context and purpose

Bertalanffy developed GST in response to what he saw as a crisis of scientific fragmentation and reductionism. By the mid-twentieth century, the sciences had become increasingly specialized, while many of their most important problems concerned organized complexity: living organisms, minds, social groups, institutions, and ecological relations. The attached source emphasizes that Bertalanffy was reacting against the assumption that understanding parts automatically explains wholes, especially when mechanistic models drawn from classical physics were applied uncritically to living and social systems. GST therefore aimed to identify principles, models, and laws that apply to systems in general, independently of the particular material out of which those systems are composed. Bertalanffy argued that “systems” of different kinds may exhibit structurally similar patterns, or isomorphisms, making it possible to transfer conceptual insights across fields without collapsing one field into another. This was also one of the original purposes of the systems movement institutionalized through the Society for General Systems Research, the predecessor of the International Society for the Systems Sciences. The ISSS history records that the Society was conceived in 1954 by Bertalanffy, Kenneth Boulding, Ralph Gerard, and Anatol Rapoport, and that one of its principal aims was to investigate the isomorphy of concepts, laws, and models across fields.

Core idea: systems are organized wholes

For Bertalanffy, a system is not merely an aggregate of elements. A system is a set of interacting components whose relations and organization are essential to its behavior. The behavior of the whole cannot be fully derived by studying the parts in isolation. This anti-reductionist position did not reject analysis; rather, it rejected the assumption that analysis alone is sufficient. Parts must be understood within the organized configuration in which they operate.

Bertalanffy described GST as a “general science of wholeness.” Its task was to formulate concepts such as organization, wholeness, directiveness, differentiation, and teleology in ways that could become scientifically legitimate rather than vague or metaphysical. This made GST an intellectual bridge between the natural sciences, the biological sciences, and the human sciences.

Open systems and steady state

Bertalanffy’s most important technical contribution was his theory of open systems. Classical physics had largely focused on closed systems: systems considered in isolation from their environments. Living systems, however, are not closed. They maintain themselves through continuous exchange of matter, energy, and information with their environment. An organism survives not by reaching thermodynamic equilibrium, but by sustaining a dynamic steady state through ongoing inflow, transformation, and outflow.

This idea helped resolve an apparent contradiction between thermodynamics and life. Closed systems tend toward increasing entropy, but living systems maintain and even increase local order by importing energy and exporting entropy. In this way, GST provided a scientific vocabulary for understanding growth, regulation, metabolism, differentiation, and self-maintenance without appealing to vitalism. Equifinality, regulation, and organization

A further key concept is equifinality. In closed mechanical systems, the final state is strongly determined by initial conditions. In open systems, by contrast, similar end states may be reached from different starting points and by different pathways. This is central to understanding biological development, adaptation, robustness, and recovery. A living organism, for example, can often compensate for disturbances and still preserve its overall form or function.

Bertalanffy also gave scientific importance to organization over substance. Systems may be composed of cells, organs, persons, institutions, or technological components; what makes them comparable is not their material composition, but their organization. This was the basis for his search for isomorphisms: recurring formal patterns across otherwise different domains. Feedback in physiology, regulation in organizations, growth in populations, differentiation in embryos, and specialization in social systems may be studied as structurally comparable phenomena, provided the comparison is disciplined and not merely metaphorical.

Relationship to cybernetics and later systems science

GST developed in close historical proximity to cybernetics, but the two traditions were not identical. Cybernetics emphasized communication, control, feedback, and regulation, especially in machines and organisms. Bertalanffy’s GST emphasized open systems, organismic biology, wholeness, hierarchy, differentiation, and the general theory of organization. Later systems science drew heavily from both traditions. Historical studies of Bertalanffy’s work show that GST and cybernetics had both convergences and differences, and that understanding their relationship is important for reconstructing the genealogy of systems science.

Humanistic and ethical significance

Bertalanffy’s systems thinking also had a humanistic dimension. He was concerned that mechanistic and reductionist models, when applied to human beings and societies, could encourage technocracy, manipulation, and dehumanization. GST, therefore, carried an implicit ethical warning: science should not treat living beings, persons, and societies merely as machines. A systems worldview should help restore attention to wholeness, context, meaning, and responsibility.

Limitations and continuing relevance

Bertalanffy did not provide a complete methodology for systems intervention, nor did he fully develop observer-dependence, power, conflict, participatory design, or the complexities of social systems. These questions were later taken up by second-order cybernetics, critical systems thinking, soft systems methodology, organizational cybernetics, complexity theory, and dialogic systems approaches. Nevertheless, GST remains foundational because it established the ontological and epistemological shift from parts to organized wholes, from closed to open systems, from linear causality to dynamic interaction, and from disciplinary isolation to transdisciplinary inquiry. For the International Society for the Systems Sciences, Bertalanffy’s GST is not merely a historical precursor. It is part of the Society’s founding intellectual identity. Its continuing value lies in its invitation to search for rigorous, transferable principles of organization while respecting the specificity of different domains. GST opened the door to systems science as a transdisciplinary project; subsequent generations have continued the work of deepening, critiquing, formalizing, and applying that project to the complex challenges of life, society, technology, and planetary futures.

Selected references

• Bertalanffy, L. von. (1968). General system theory: Foundations, development, applications. George Braziller.

Drack, M., & Pouvreau, D. (2015). On the history of Ludwig von Bertalanffy’s “General Systemology,” and on its relationship to cybernetics. International Journal of General Systems.

• International Society for the Systems Sciences. (n.d.). History. https://www.isss.org/history/