Quote: billwill @ April 10 2011, 8:50 PM BSTScience Fiction writers in general have TWO different 'solutions' to the time-machine paradox (which is what you described).
But the ultimate short story of time travel, in my opinion, is the one called (I'm pretty sure) "All you Zombies". Try find a copy and read it some time.
Is this it...?
Sounds interesting.