Short Story
Perpendicular Worlds
- by John Gribbin
- in Analog, September 1984
Mackenzie, a researcher and problem solver who must continually justify his existence to his benefactor, is puzzled about why the things he sends back in time never reappear, but then he starts thinking about Everett’s interpretation of quantum physics, leading him to a circular idea. —Michael Main
You make it sound so simple, Dr. Mackenzie. Just tell me if I’ve got it right. You say that, according to Everett’s calculations, there must be a world—a perpendicular world?—where you, or your counterpart, has solved the puzzle of time travel. And in order to ask him how he did it, all you need is a time machine. Am I right?
