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In 1991, David Deutsch proposed a method to explain how quantum systems interact with closed timelike curves (CTCs) using time evolution equations. This method aims to address paradoxes like the grandfather paradox, [10] [11] which suggests that a time traveler who stops their own birth would create a contradiction.
Time travel is the hypothetical activity of traveling into the past or future. Time travel is a concept in philosophy and fiction, particularly science fiction. In fiction, time travel is typically achieved through the use of a device known as a time machine. The idea of a time machine was popularized by H. G. Wells's 1895 novel The Time ...
Dr. Sam Beckett becomes stuck in his past during a time-travel experiment and, in trying to return to the present time, temporarily takes the place of other people and corrects historical mistakes, thus triggering the next time jump. In his travels, he is aided by a hologram of his friend, Al. 1990 1991 Bill & Ted's Excellent Adventures
A bootstrap paradox, also known as an information loop, an information paradox, [6] an ontological paradox, [7] or a "predestination paradox" is a paradox of time travel that occurs when any event, such as an action, information, an object, or a person, ultimately causes itself, as a consequence of either retrocausality or time travel.
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.
Bid Time Return is a 1975 science fiction novel by Richard Matheson. It concerns a man from the 1970s who travels back in time to court a 19th-century stage actress whose photograph has captivated him. In 1980, it was made into the film Somewhere in Time, the title of which was used for subsequent editions of the book.
The timestream or time stream is a metaphorical conception of time as a stream, a flowing body of water.In Brave New Words: The Oxford Dictionary of Science Fiction, the term is more narrowly defined as: "the series of all events from past to future, especially when conceived of as one of many such series". [1]
Douglas Lain commented in 2012 that "The most interesting and perhaps most overlooked move that David Gerrold makes in his fractal time travel book The Man Who Folded Himself is that he writes the whole story in the second person without alerting you, the reader, directly to this fact."