A Propositional Fact of Going Backward
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A French journalist and science-fiction writer René Barjavel spent a lot of his time thinking about time travel. In 1943 Barjavel asked
"What would happen if a man went back in time to a date before his parents were born and killed his grandfather? "
This question leads us to a self-contradictory situation where the past is changed in any way. With no grandfather, one of the man's parents would never have been born, and therefore the man himself would never have existed, so there would be nobody to go back in time and kill the grandfather in the first place (or the last place depending on how you look at it).
A?temporal paradox,?time paradox,?or?time travel paradox?is a?paradox, an apparent contradiction, or logical contradiction associated with the idea of time and?time travel. In physics, temporal paradoxes fall into two broad groups: consistency paradoxes exemplified by the?grandfather paradox; and?causal loops.
The grandfather paradox has been a mainstay of philosophy, physics, and the entire back-to-the-future trilogy. Some people have tried to defend time travel with arguments like the parallel universe resolution, in which the change is made by the time traveller creates a new separate history, branching off from the existing one, but the grandfather paradox prevails. Although the paradox only suggests that traveling backwards in time is impossible, it doesn't say anything about going the other way.
Reference
Statistische Datenanalyse mit der Statistikumgebung R
2 年Nice article! Time travel is an interesting topic and I have often looked into it for entertainment. But whether the grandfather paradox is really so, we do not know of course. We can imagine the "extinction criterion", but whether the real object, the time traveler, simply dissolves, may be doubted. The "object" is there and the " material " does not simply disappear. But I have something here on the subject of time travel which may make you think: Swiss clock in Ming tomb. Is in German, but can be translated surely with Google (Spektrum der Wissenschaften is an absolutely serious magazine!): https://www.spektrum.de/news/schweizer-uhr-in-ming-grab/977257
Data Scientist | Capital One
2 年Quite a positive message at the end: Apparently, we cannot change the past; but we may look forward to the future.
Monitoring And Evaluation Specialist at Shiraz University of Medical Sciences
2 年Hello dear (( Cosmic Charade Team)) Thank you for sharing this interesting and excellent post. Thanks a lot. ?????????? #Jobs #shibainu ??????????