grandfather paradox theme

The following kind of paradox is featured: If I go back in time and do something that would prevent me from later going back in time (such as killing my own grandfather), then I can't have gone back in time. But then I won't have been prevented from going and so I went, and so on.

14 total · 1 choice · 3 major · 10 minor

StoryLevelMotivation
voy1x04 choice the rescue attempt caused the explosion
futurama3x19 major Fry killed his own grandpa and then became his own grandpa.
movie: Back to the Future (1985) major The grandfather paradox was topical as Marty went back in time and found that his mother had a crush on him.
movie: Timerider: The Adventure of Lyle Swann (1982) major The grand revelation of the film was that ClClaire, whom Lyle had made passionate love to, was in face his own grandmother. The possibility was left open that Lyle had impregnated Claire, so we are left to ponder whether he is his own grandfather.
ds95x06 minor Julian and Miles discussed the possibility that Watley was his grandmother
futurama4x10 minor It was mentioned how Fry traveled in to the past and became his own grandfather.
futurama7x03 minor The episode ended with a poorly resolved paradox: Travis went back in time and changed history so that Travis never went back in time to change history.
ldr2019e1x17 minor In the last of the alternate histories, Hitler time traveled and touched his own alternate self which caused him to die in a "space-time paradox".
movie: Happy Accidents (2000) minor A physicist named Tab described this paradox while conversing with some acquaintances at a social function.
movie: Millennium (1989) minor Dr. Arnold Mayer spelled out this classic paradox in a speech at what appeared to be the United Nations.