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Scientists have suggested ingenious ways to avoid time travel paradoxes, including
–The Solution: time travel is impossible due to the very paradox it creates
–Self-healing hypothesis: successfully altering events in the past will set off another set of events which will cause the present to remain the same
–The Multiverse /“many-worlds” hypothesis: an alternate parallel universe or timeline is created each time an event is altered in the past
–Erased timeline hypothesis : a person traveling to the past would exist in the new timeline, but have their own timeline erased
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1) Closed Causal Loops, such as the Predestination Paradox and the Bootstrap Paradox, which involve a self-existing time loop in which cause and effect run in a repeating circle, but is also internally consistent with the timeline’s history.
2)
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A Bootstrap Paradox is a type of paradox in which an object, person, or piece of information sent back in time results in an infinite loop where the object has no discernible origin, and exists without ever being created....
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A self-fulfilling prophecy is only a causality loop when the prophecy is truly known to happen and events in the future cause effects in the past, otherwise the phenomenon is not so much a paradox as a case of cause and effect.
Say, for instance, an authority figure states that something i...
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The Butterfly Effect is a reference to Chaos Theory where seemingly trivial changes can have huge cascade reactions over long periods of time. Consequently, the Timeline corruption hypothesis states that time paradoxes are an unavoidable consequence of time travel, and even insignificant changes ...
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In one story, a paleontologist, with the help of a time travel device, travels back to the Jurassic Period to get photographs of Stegosaurus, Brachiosaurus, Ceratosaurus, and Allosaurus amongst other dinosaurs.
He knows he can’t take samples so he just takes magnificent pictures from the f...
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They finish what they are doing and return to the present, but everything is gone. They reappear in a wild world with no humans, and no signs that they ever existed. They fall to the floor of their platform, the only man-made thing in the whole world, and lament “Why? We didn’t change anything!” ...
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American theoretical physicist Joseph Polchinski proposed a time paradox scenario in which a billiard ball enters a wormhole, and emerges out the other end in the past just in time to collide with its younger version and stop it going into the wormhole in the first place.
Solutions have bee...
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Similar to the Grandfather Paradox which paradoxically prevents your birth, the Killing Hitler paradox erases your reason for going back in time to kill him.
Furthermore, while killing Grandpa might have a limited “butterfly effect”, killing Hitler would have wider consequences for everyon...
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For example, if you traveled to the past and killed your grandfather, you would never have been born and would not have been able to travel to the past – a paradox.
Let’s say you did decide to kill your grandfather because he created a dynasty that ruined the world. You figure if you knock...
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There is nothing in Einstein’s theories of relativity to rule out time travel , although the very notion...
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A Predestination Paradox occurs when the actions of a person traveling back in time becomes part of past events, and may ultimately causes the event he is trying to prevent to take place.
Imagine th...
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CURATED FROM
I have always been interested in the concept of time and time travel, as it is always as mind boggling as it is simple, and this article I found useful to introduce paradoxes which arise as part of time travel.
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Time Travel, in pop culture and theory, presents many unique situations and paradoxes, the most famous of them being the Grandfather Paradox, which is dealt with in the Terminator movies, along with Back To The Future.
The paradox states that if you travel back to the...
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