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A common objection to the idea of traveling back in time is put forth in the grandfather paradox or the argument of auto-infanticide. [88] If one were able to go back in time, inconsistencies and contradictions would ensue if the time traveler were to change anything; there is a contradiction if the past becomes different from the way it is.
In most films, time portals are used to take a group of people or a single person back in time. The most popular of all time travels would be traveling back to the time of the dinosaurs. In some films time portals can also be set as a hazard, for example, they can begin to go haywire which makes them accidentally transport something or someone ...
The Wayback Machine is a digital archive of the World Wide Web founded by the Internet Archive, an American nonprofit organization based in San Francisco, California. Created in 1996 and launched to the public in 2001, it allows users to go "back in time" to see how websites looked in the past.
A temporal paradox, time paradox, or time travel paradox, is a paradox, an apparent contradiction, or logical contradiction associated with the idea of time travel or other foreknowledge of the future. While the notion of time travel to the future complies with the current understanding of physics via relativistic time dilation, temporal ...
Retrocausality. Retrocausality, or backwards causation, is a concept of cause and effect in which an effect precedes its cause in time and so a later event affects an earlier one. [1][2] In quantum physics, the distinction between cause and effect is not made at the most fundamental level and so time-symmetric systems can be viewed as causal or ...
Back in Time for... is a British factual entertainment television series produced by Wall to Wall and broadcast on BBC Two from 17 March 2015 to 23 June 2022. [1] Each series takes one "typical" family or multiple individuals relating to the topic (e.g., factory workers in Back in Time for the Factory) and immerses them in life of past decades.
Faster-than-light (superluminal or supercausal) travel and communication are the conjectural propagation of matter or information faster than the speed of light (c). The special theory of relativity implies that only particles with zero rest mass (i.e., photons) may travel at the speed of light, and that nothing may travel faster.
Time travel in modern fiction is sometimes achieved by space and time warps, stemming from the scientific theory of general relativity. [9] Stories from antiquity often featured time travel into the future through a time slip brought on by traveling or sleeping, in other cases, time travel into the past through supernatural means, for example brought on by angels or spirits.