The book "Artificial intelligence in CAD: at 3 h. H. 1: Expert Systems" by L. C. Ovchinnikova is a fascinating and in-depth study that immerses the reader in the world of modern technologies and their applications in computer-aided design (CAD) systems. This work will be a real discovery for anyone interested in the intersection of engineering, computer science and artificial intelligence. In the first part of the trilogy, the author examines in detail the concept of expert systems that play a key role in design automation and decision-making. Ovchinnikov shares his knowledge on how artificial intelligence can be integrated into CAD to improve design efficiency and accuracy The reader will learn about the principles of expert systems, their structure and algorithms, as well as how they can be used to solve complex problems in various fields, such as architecture, engineering and electronics. The book is addressed to a wide audience: from students and graduate students of technical specialties to practicing engineers and software developers. If you are passionate about new technologies, strive to understand how artificial intelligence changes the world of design, or want to deepen your knowledge in the field of CAD, this work will become an indispensable source of information for you. The topics raised in the book cover not only technical aspects, but also philosophical issues related to the human role in the design process. Ovchinnikov asks important questions about how technology can improve and sometimes complicate the life of an engineer. He examines the ethical aspects of the use of artificial intelligence, which makes the book relevant for those who are interested not only in technology, but also their impact on society. Style L. C. Ovchinnikova is distinguished by clarity and accessibility, which allows the reader to easily assimilate complex concepts. The author uses many examples and illustrations, which makes the material more clear and understandable. His previous works, such as Fundamentals of Automation Systems Design and Artificial Intelligence in Design, have already won recognition among professionals and students, and this book will be no exception. In conclusion, "Artificial intelligence in CAD: at 3 h. H. 1: Expert Systems” is not just a tutorial, but a real find for anyone who wants to be at the forefront of technological change. This book inspires new ideas, encourages reflection and opens the door to a world where artificial intelligence and design go hand in hand. If you are looking for literature that combines a scientific approach and practical application, then this work should definitely take place on your shelf.