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.
Af L. Ron Hubbard, Auston Habershaw, Sharon Joss, Scott R. Parkin, Michael T. Banker, Larry Niven, Zach Chapman, Amy H. Hughes, Orson Scott Card, Kevin A. Anderson, Rebecca Moesta, Samantha Murray, Daniel J. Davis, Tim Napper, Krystal Claxton, Kary English, Martin L. Shoemaker, Steve Pantazis