2022-07-08

20220708 System theory, information theory, and cybernetics are called the "three old theories".

These three theories originated from biological science, communication science, and automation science respectively.

Dissipative structure theory, synergy theory, and catastrophe theory are called the "three new theories". These three theories originated from thermodynamics, physics, and mathematics respectively, and have been widely used in many natural sciences and social sciences.

"Ontology", "Three World Theory" and "Small World Phenomenon" are called "Three Cognitive Theories".

Laosan Theory Information Theory Information theory takes the model of the communication system as the object, uses probability theory and mathematical statistics as tools, and describes the transmission and extraction of information from a quantitative aspect.

The research field of information theory has expanded to machines, biology and social systems, and has developed into a science that specifically uses mathematical methods to study the general laws of how to measure, extract, transform, transmit, store and control information in various systems.

Cybernetics uses concepts such as information and feedback to study the state, function and behavior of the system through methods such as black box system identification and functional simulation, and regulates and controls the system to achieve the goal stably and optimally.

Cybernetics fully embodies the development trend of modern science's integration and synthesis, and has very important methodological significance.

System Theory System theory uses concepts such as completeness, centralization, hierarchical structure, ultimacy, and logical isomorphism to study patterns, principles, and laws applicable to all comprehensive systems or subsystems, and strives to mathematically describe their structures and functions.

.

The system emphasizes the organic connection between the whole and the parts, the parts and the parts, the whole and the external environment, and has three basic characteristics: integrity, dynamics and purpose.

As a guiding ideology, systems theory requires that things be examined as a whole or system, which is in line with Marxist philosophical principles about the universal connection of the material world.