"Decomposition" is a philosophical novel written by the American writer Philip K. Dick. The book tells about the future, where the world is immersed in a terrible post-apocalyptic chaos. The main character of this story, Joe Knox, experiences a series of strange events and feels that his reality is falling apart. Due to the constant changes in relative reality, Nax begins to doubt his own existence and the reality of the world around him. The author successfully combines science fiction with philosophy, causing the reader to think about truth, illusions, and the changeability of reality. "Decomposition" is a book that makes you think about the deep questions of essence and existence by reading it.