This nonfiction essay, first published in Vertex in April 1973, discusses the grandfather paradox and the many uses, implications, and limits of teleportation, from personal transportation to interstellar travel.
Larry Niven is the New York Times bestselling and multiple Hugo, Locus, and Nebula Award–winning author of science fiction short stories and novels, including the Ringworld series and The Burning City, as well as many other science fiction masterpieces.View all by Larry Niven
