The book "Fundamentals of System Analysis and Decision Theory" by A. Levitch is a real find for anyone interested in modern approaches to analyzing complex systems and making informed decisions. In a rapidly changing world, where information becomes the main resource, the ability to correctly interpret data and make decisions based on them becomes especially relevant. This book offers the reader a unique look at the methods and tools that will help to understand the variety of factors affecting decision-making. From the first pages, Levitch immerses the reader in the world of system analysis, explaining that this is not just a set of methods, but a whole philosophy that allows you to look at problems from a new angle. The author shares his knowledge and experience, emphasizing the importance of a systematic approach in various fields - from business to social sciences. He emphasizes that in order to successfully solve problems, it is necessary to take into account not only individual elements of the system, but also their interaction. This makes the book particularly valuable for students, graduate students, and practitioners in management, economics, sociology, and engineering. The book will be of interest to a wide range of readers - from students studying the basics of system analysis to experienced professionals seeking to improve their decision-making skills. If you are passionate about management, data analytics or just want to learn how to better navigate complex situations, “Basics of Systems Analysis and Decision Theory” will be an indispensable assistant for you. Levich raises important topics such as uncertainty, risks and trade-offs that invariably accompany the decision-making process. It offers readers not only theoretical knowledge, but also practical tools that can be applied in real life. Reading the book, you will learn about various methods of analysis, such as SWOT analysis, the method of analyzing hierarchies (AHP) and many others. These tools will help you not only to better understand the situation, but also to find optimal solutions based on evidence. Levich's style is distinguished by clarity and accessibility, which makes the material understandable even for those who are just beginning to get acquainted with this topic. It uses many examples and illustrations, which allows the reader to easily assimilate complex concepts. In addition, the author shares his thoughts on how system analysis can be applied in various spheres of life, which makes the book not only a textbook, but also a source of inspiration. If you are looking for literature that will help you develop analytical thinking and learn to make more informed decisions, then “Basics of Systems Analysis and Decision Theory” is exactly what you need. The book will be useful not only to those who work in the field of business or management, but also to anyone who wants to learn how to better understand complex situations and make informed decisions. In conclusion, it is worth noting that a. Levich is an author who is not only a theorist, but also a practitioner. His other well-known works are also devoted to analysis and management issues, and each of them deserves attention. Fundamentals of Systems Analysis and Decision Theory is a book that not only expands the horizons of knowledge, but also opens up new opportunities for personal and professional growth. Do not miss the chance to immerse yourself in the world of system analysis and learn how to make decisions that will change your life for the better!