a paradox caused by an action of a time traveller which alters history so that the action is no longer logically possible, such as travelling into the past to murder a dictator which leads to a peaceful world from which the time traveller would have had no reason to depart; cf. grandfather paradox n., temporal paradox n.
Also time-travel paradox.
Someone, sometime later than 2806, copied Dwar Smit’s earleist calculations and directions, traveled back through time, and left them in your friend’s mail box. Dr. Hawkinson could therefore copy a machine that was not really made until centuries after his death! It sounds almost incredible at first. It’s what you might call a paradox.]
My dear Collingwood,…don’t drive yourself crazy trying to resolve the paradoxes of time-travel. ]
‘No reconciliation of the supposed time paradox is necessary,’ he droned, ‘for no paradox exists.’
As for applause, I know I’m going to be too busy finding out things about all the time-travel paradoxes that have been plaguing the theory boys.
Cyril Kornbluth’s Dominoes and John Wyndham’s The Chronoclasm…are beautiful jobs of writing, but their time-paradox plots strike me as stale.
The exemplary form of time-paradox story is that which takes the closed loop and complicates it.
‘A time-travel paradox,’ said the small man. ‘There wasn’t any failure with the equipment. It wasn’t the hardware. You just ran into one of the basic laws of the universe, something we don’t know much about yet. Fortunately it was just a little paradox.’
I don’t understand these time-paradox things. I don’t see why someone will have to go in a few days if you’re back now, safe and sound.
It creates a time paradox!… A person can’t be both alive and dead at the same time! It violates the laws of physics!
And this would not set up a time paradox.
If there’s an equivalent to the locked-room mystery within SF, it’s surely the time-paradox story…. Only a new and novel take on the subgenre is going to hold the attention, which is where the challenge lies. Enter Peter F Hamilton, whose time-paradox, crime-thriller novella [etc.].
Jeff Prucher submitted a cite from a Malcolm Edwards article in a reprint of the Nicholls' "Encyclopedia of SF"; Mike Christie verified the cite in a 1981 reprint, and Rick Hauptmann subsequently verified it in the 1979 first edition.
Jeff Wolfe submitted a 1989 cite from Craig Shaw Gardner's "Back to the Future Part II".
Mike Christie submitted a 1953 cite from Damon Knight's book review column in Science Fiction Adventures.
Mike Christie submitted a 1949 cite from D.W. Meredith's "Next Friday Morning".
Mike Christie submitted a 1942 cite from Malcolm Jameson's "Anachron, Inc."
Ralf Brown located and Richard Horton submitted a 1985 cite from George Alec Effinger's "The Nick of Time".
Fred Galvin submitted a 1942 cite for "time travel paradox" from an anonymous feature article, "Fantasy Circle" in the October 1942 Astonishing Stories.
Larry Doyle suggested that a 1929 time-travel story by Charles Cloukey, "Paradox" (Amazing stories Summer 1929, reprinted in Amazing, Sept. 1968) might be a likely source for a cite; Jesse Sheidlower checked the original, and while it discusses classic time paradoxes, it does not use the term itself; he added a bracketed cite.
Last modified 2021-01-27 23:18:44
In the compilation of some entries, HDSF has drawn extensively on corresponding entries in OED.