"Equivalent" is an exciting science fiction book from the famous Solitaire writer. This book tells the story of a future society where people live in virtual reality, controlling their emotions and perceptions through a special implant in the brain. The main character, who questions the existing order of things, finds himself at the center of a complicated and dangerous intrigue, where not only his own life is at stake. The author successfully combined technological progress with psychological aspects of human nature, creating an interesting world vision of the future. "Equivalent" captivates the reader from the first pages with its tense plot, unexpected turns of events and dizzying atmosphere of riddles and secrets. This book not only makes you think about the essence of human nature and the possible consequences of technological progress, but also leaves behind many questions to which you have to look for answers long after you finish reading. "Equivalent" is a book that every fan of science fiction will definitely remember and will present many unusual thoughts and feelings.