In cybernetics the term cybertext is used to describe the concept of organization of the text in order to analyze the influence of the medium as an integral part of the literary dynamic, as noted by Espen Aarseth in 1997.
The term cybertext is derived from the word cybernetics, which was coined by Norbert Wiener in his book Cybernetics, or Control and Communication in the Animal and the Machine (1948), which in turn comes from the Greek word kybernetes -helmsman.

The fundamental idea in the development of the theory of cybernetics is the concept of feedback: a portion of information produced by the system that is taken, total or partially, as input. Cybernetics is the science that studies control and regulation in systems in which there exists flow and feedback of information. Though first used by science fiction poet Bruce Boston (Cybertexts, 1992), the term cybertext was brought to the literary world’s attention by Espen Aarseth in 1997.

Aarseth's concept of cybertext focuses on the organization of the text in order to analyze the influence of the medium as an integral part of the literary dynamic. According to Aarseth, cybertext is not a genre in itself; in order to classify traditions, literary genres and aesthetic value, we should inspect texts at a much more local level.
The concept of cybertext offers a way to expand the reach of literary studies to include phenomena that are perceived today as foreign or marginal (Aarseth, 1997). In Aarseth’s work, cybertext denotes the general set of text machines which, operated by readers, yield different texts for reading.

For example, with a book like Raymond Queneau’s Hundred Thousand Billion Poems, each reader will encounter not just poems arranged in a different order, but different poems depending on the precise way in which they turn the sections of page.
Cybernetics is the interdisciplinary study of the structure of regulatory systems. Cybernetics is closely related to control theory and systems theory. Both in its origins and in its evolution in the second-half of the 20th century, cybernetics is equally applicable to physical and social (that is, language-based) systems.

Cybernetics is preeminent when the system under scrutiny is involved in a closed signal loop, where action by the system in an environment causes some change in the environment and that change is manifest to the system via information / feedback that causes the system to adapt to new conditions: the system changes its behaviour. This "circular causal" relationship is necessary and sufficient for a cybernetic perspective.

Contemporary cybernetics began as an interdisciplinary study connecting the fields of control systems, electrical network theory, mechanical engineering, logic modeling, evolutionary biology, neuroscience, anthropology, and psychology in the 1940s, often attributed to the Macy Conferences.

Other fields of study which have influenced or been influenced by cybernetics include game theory, system theory (a mathematical counterpart to cybernetics), psychology (especially neuropsychology, behavioral psychology, cognitive psychology), philosophy, and architecture.