"The Error Within" is a science fiction novel by the famous writer James Blish. In this book, the author examines the topic of the future of humanity and technological progress through the prism of complex interpersonal and moral problems. The main character finds himself in a situation where he has to make difficult decisions that affect not only his future, but also the future of the entire world where he lives. Various scientific concepts, unexpected plot twists and deep philosophical reflections make this book exciting for science fiction lovers. "The Error Within" is a story that makes us think about what is really important in life.