John Gribbin

writer
Short Story

Mackenzie


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 in the first story (“Perpendicular Worlds,” Sep 1984 Analog) he starts thinking about Hawking black holes and Everett parallel worlds, and his work continues in a second story (“Random Variable,” Feb 1986 Analog) (although I prefer Gribbon’s science books).
There must be as many different ways in which the world could have got into the state it is now as there are different ways in which it can develop into the future.
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  • Science Fiction
  • Definite Time Travel
Short Story

The Best Is Yet to Be


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  • Science Fiction
  • Undetermined Time Travel
Short Story

Don’t Look Back


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  • Undetermined
  • Undetermined Time Travel