"Knowledge of the Difficult ." Introduction by G. Nicolis and E. Prigogine is a fascinating and in-depth study that opens doors to the world of complex systems and their behavior. The popular science paper, written by eminent scientists, combines elements of physics, chemistry, and philosophy, offering the reader a unique opportunity to look at the nature of complexity from a new perspective. The authors focus on phenomena that do not lend themselves to simple explanations and require more in-depth analysis. Nicolis and Prigogine, known for their work in thermodynamics and chaos theory, explore how simple elements can interact and create complex structures that in turn can behave unpredictably. The book immerses the reader in the concept of self-organization, showing how order can emerge from chaos, and vice versa. This makes the work particularly relevant in light of current scientific research relating to ecology, economics, and social systems. “Knowledge of the complex” will be interesting for both students and graduate students, as well as for a wide audience interested in science and philosophy. If you are passionate about issues related to the dynamics of systems, evolution and interaction of various elements, this book will become a real treasure for you. It is suitable for those who seek to understand how complex structures form and function, and how this knowledge can be applied in various fields from biology to sociology. The topics raised in the book are not only scientific, but also philosophical. The authors pose important questions to the reader about the nature of reality, how we perceive the world and how our understanding of complexity affects our behavior. In a rapidly changing world, where complex systems are becoming the norm, understanding these processes becomes not only interesting, but also necessary. The style of Nikolis and Prigogine is distinguished by clarity and accessibility, which makes complex concepts understandable even for an unprepared reader. Their ability to explain scientific ideas in simple language, while maintaining scientific accuracy, makes the book fascinating and informative. Both authors are Nobel Prize winners, and their contributions to science cannot be overstated. Their other works, such as Order Out of Chaos and Time, Structure and Dynamics, are also noteworthy and can serve as a great addition to Knowledge of the Complex. The book not only expands the horizons of understanding, but also inspires further study. Readers who seek deeper knowledge about how complex systems function and how they affect our lives will find plenty of thought ideas in this work. It’s not just a science book — it’s an invitation to think about how we can better understand the world around us. Thus, "Knowledge of complex . Introduction” is not just a textbook, but a real find for everyone who seeks a deep understanding of complex phenomena. This book will become an indispensable companion for those who want to explore the boundaries of science and philosophy, and will help open new horizons in understanding the world around them. Do not miss the opportunity to immerse yourself in the fascinating world of complex systems together with Nikolis and Prigozhin!