The time travel paradox, is a clear contradiction, or a logical contradiction, which is associated with the idea of time and time travel. The time travel paradox is also called a temporary paradox, or time paradox.
There are two broad groups of time travel paradoxes in physics. consistency paradoxes imitated by grandfather paradox and causal loops. Other paradoxes associated with time travel are the Fermi paradox, a form of paradoxes of free will, and Newcomb’s paradox. All are explained in detail in this article.
A Causal loop is a paradox of time travel that occurs when both a future event causes an event in the past, which in turn causes a future event when both events are present in spacetime, but their origin Cannot be determined A Causal loop may include an event, a person, or an object or information. The term bootstrap paradox, foreseeable paradox or ontological paradox are sometimes used in fiction to refer to a causal loop.
Grandfather paradox occurs when the past is altered in some way, thus creating a paradox. A time traveler can do anything that has happened, but cannot do anything that has not happened, to do something that has no contradiction. Whenever it is possible to change the past, a Grandfather paradox Consistency Paradox arises. Know this in more detail.
As such, the Fermi paradox refers to the apparent contradiction between various evidences of the existence of extraterrestrial civilizations elsewhere in our galaxy and the lack of estimates of probability. But here the Fermi paradox can be adapted to time travel in some way – if time travel is possible, where are all future visitors? The answer to this question may vary – “From time to time travel is not possible, future visitors may not reach any arbitrary point in the past, or that they may avoid identifying themselves Live in secret ”.
Newcomb’s paradox is a thought experiment that shows a clear contradiction between expected utility theory and strategic dominance theory. Thought experimentation often promotes work-causal reasoning and free will by allowing for “right prophets”: if the right predictors of the future exist, for example, if time travel is a mechanism for making correct predictions As present, then the absolute predictions would seem to be independently contradictory because decisions made explicitly for free would already know the true prophet.
- Wolpert, D. H.; Benford, G. (June 2013). (The lesson of Newcomb’s paradox)
- Divine Foreknowledge and Newcomb’s Paradox
- Leora Morgenstern (2010), Foundations of a Formal Theory of Time Travel