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What is cybernetics?
The establishment of cybernetics

1969 One day, in the laboratory of Stanford University in the United States, scientists were conducting a famous experiment to see if the performer "Sack" could climb from the ground to the platform in the middle of the room and knock down a box there. At the beginning of the experiment, Sack went to the podium. I saw him circling the platform for 20 minutes, but he still couldn't climb up. Sack looked embarrassed. He looked around and suddenly found an inclined panel in the corner. He pondered for a while and slowly put the inclined panel on the platform. Then, he walked onto the platform along the inclined panel and pushed down the box on the platform. Suddenly, there was a burst of warm applause in the laboratory. Sykes is a robot with a computer. Scientists gave birth to him with the functional simulation method of cybernetics, and he was born in this world. This is one of the achievements of modern cybernetics. In the 1940s, with the cooperation of some experts in the fields of medicine, biology and engineering, Weiner, an American scientist, founded this brand-new discipline by simulating the various processes between electrical and electronic systems and in biological organisms.

Wiener was interested in mathematics, physics and many other subjects since he was a child. When studying the random physical phenomenon-Brownian motion, he gradually established the statistical theory. The characteristic of cybernetics research object is to decide and adjust its actions according to random environment. When he studied the noise and information problems of electric filters, he formed the concept of information quantity, which is also an important idea of cybernetics.

In philosophy, Wiener was deeply influenced by Russell and Leibniz. In his Cybernetics, he once said: "If I had to choose a patron saint for cybernetics from the history of science, I would choose Leibniz. Leibniz's philosophy focuses on two closely related concepts-the concept of common symbolism and the concept of argument. Today's mathematical notation and symbolic logic all come from this. " He believes that "since Leibniz, it seems that no one can fully grasp all contemporary knowledge activities." Since then, science has increasingly become a profession dedicated to narrower and narrower fields. "This understanding inspired him to explore the" neglected no man's land "between various disciplines, which prompted him to gradually produce the idea of cybernetics.

In the late 1930s, Wiener became a frequent visitor to the seminar on scientific methods hosted by Dr. Rosen bulut, a neurophysiologist at Harvard Medical School. Participants come from various disciplines, and they are a group of scholars with extremely active thoughts who can often express various unique opinions. In these discussions, he realized that the most promising field of scientific development is the edge and intersection of disciplines, which he called "the virgin land of science". This became Wiener's strategic thought of scientific achievements.

1948, cybernetics was published, and Wiener suddenly became a world-famous figure. In the book, Wiener introduces the control system composed of electronic components or mechanical components; Study the transmission and processing of information by statistical methods; It points out how to use cybernetics to study brain and neurophysiological activities, and so on. In particular, the mathematical expressions of cybernetics are given, including: dealing with the problem of giving mathematical expressions to the time series of uncontrollable variables; The design operator transforms the input function into the output function; The criterion for determining the meaning of optimality is established in operator design. Because Wiener method belongs to statistics in essence, it naturally introduces the concepts of unbiased, minimum variance, autocorrelation function and correlation analysis of input-output function. Therefore, Wiener created and developed generalized harmonic analysis, and applied it to each individual sample function through ergodic theorem to obtain the required information. The book also raises a series of important questions in philosophy of science and sociology, for example, what is the nature of information? What is its position in philosophy? Whether the machine can think; Whether it will ultimately control people and so on. Many problems are still hot topics of debate between scientists and philosophers.

1950, at the request of American readers, Wiener published a popular book on cybernetics, Everyone's Use. This book expanded his reputation from the scientific community to the public. Later, he published works such as Cybernetics and Society (1958) and New Chapter of Cybernetics (1963).