“Don’t believe your eyes!” is a fascinating and informative book by Yakov Isaacovich Perelman, which invites the reader to the world of amazing scientific phenomena and paradoxes. This work, written at the beginning of the 20th century, remains relevant today, attracting the attention of both science lovers and those who just want to have fun, immersed in the world of mysteries and illusions. The book is a collection of entertaining tasks and puzzles that make us think about how we perceive the world around us. Perelman masterfully combines elements of mathematics, physics and logic in his works, creating fascinating situations in which the reader finds himself in the role of a researcher. Each task is not just a mathematical puzzle, but a real intellectual game in which you need to use logic and intuition to uncover hidden truths. Who can like this book? First of all, it will be interesting for schoolchildren and students who seek to develop their analytical abilities and learn to think outside the box. However, “Don’t believe your eyes!” will also attract the attention of adult readers who like to solve riddles and look for answers to complex questions. This book will be a great gift for lovers of science and puzzles, as well as for those who want to spend time usefully, developing their mental abilities. The themes raised in the book are diverse and fascinating. Perelman touches on issues of perception, illusions and paradoxes, which makes his work not only cognitive, but also philosophical. The reader is faced with how easy it is to err by relying only on one's eyes.. This emphasizes the importance of critical thinking and the ability to analyze information, which is especially relevant in today's world, where fake news and manipulation are becoming commonplace. Perelman's style is easy and affordable. He skillfully uses humor and irony, which makes reading not only useful, but also pleasant. The author's language is simple and understandable, which makes it easy to assimilate even the most complex concepts. His other well-known works, such as “Entertaining Mathematics” and “Entertaining Physics”, are also filled with the same spirit and desire to make science accessible and interesting to a wide audience. The book “Do not believe your eyes!” is not just a collection of tasks, but a whole world in which the reader plunges with his head. It inspires the study of science and encourages reflection on how we perceive reality. Each page is filled with puzzles that are waiting for their solution, and intriguing questions that you want to find the answer to. This work will be an excellent companion for those who want not only to have fun, but also to expand their horizons, immersed in the world of science and logic. If you are looking for books that will help you develop critical thinking and teach you to look at the world from different angles, “Don’t believe your eyes!” will be an excellent choice. This book not only entertains, but also teaches, leaving in the heart of the reader the desire to explore and discover new things. Do not miss the opportunity to get acquainted with this masterpiece, which continues to inspire generations!