The Introduction to Cybernetics is one of the standard works of the young science of cybernetics, not least due to the author's didactic skill in conveying foundational concepts. Ashby avoids including unnecessarily confusing areas of electronics and higher mathematics for the layperson in his introduction, instead using easily understandable examples from everyday life. The first part deals with systems in general, their schematic representation through transformation, stability, independence, and feedback. In the second part of the book, Ashby addresses "information" in relation to Shannon's fundamental theory. Numerous examples from the field of biological research are used to explain information and coding. The third part demonstrates the applications of mechanisms and information for regulation.