"The Gutenberg Galaxy" is a book by Marshall McLuhan published in 1962. It explores the impact of the printing press on culture and communication, arguing that the shift from oral to written forms of communication transformed society. McLuhan suggests that this technological change influenced how people think and interact with one another. The title refers to Johannes Gutenberg, who invented the movable type printing press in the 15th century. McLuhan examines how this invention created a new "galaxy" of thought, leading to the rise of individualism and the modern age. The book emphasizes the relationship between technology and human perception.