Time
- Bootstrap paradox: Can a time traveler send himself information with no outside source?
- Predestination paradox: A man travels back in time to discover the cause of a famous fire. While in the building where the fire started, he accidentally knocks over a kerosene lantern and causes a fire, the same fire that would inspire him, years later, to travel back in time. The bootstrap paradox is closely tied to this, in which, as a result of time travel, information or objects appear to have no beginning.
- Temporal paradox: What happens when a time traveler does things in the past that prevent him from doing them in the first place?
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- Grandfather paradox: You travel back in time and kill your grandfather before he conceives one of your parents, which precludes your own conception and, therefore, you couldn't go back in time and kill your grandfather.
- Hitler's murder paradox: You travel back in time and kill a famous person in history before they become famous; but if the person had never been famous then he could not have been targeted as a famous person.
Read more about this topic: List Of Paradoxes
Famous quotes containing the word time:
“Time is the substance from which I am made. Time is a river which carries me along, but I am the river; it is a tiger that devours me, but I am the tiger; it is a fire that consumes me, but I am the fire.”
—Jorge Luis Borges (1899–1986)
“For five years I have seen her each day, and each time I believe it is for the first time.”
—Jean Racine (1639–1699)
“It is my opinion that time brings all things to fruition; by time all things are made plain; time is the father of truth.”
—François Rabelais (1494–1553)