Why same object but different space can't be touch?

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Discussion Overview

The discussion revolves around the concept of time travel and the implications of encountering oneself in the past, particularly the idea that touching one's past self could lead to chaos. Participants explore whether this notion has any basis in actual scientific theory or if it is purely fictional.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant questions the idea of touching oneself in the past, suggesting it must be based on some actual theory, despite acknowledging it as fantasy.
  • Another participant asserts that the idea is total fiction and merely a plot device, implying no scientific basis exists for the claim.
  • Some participants humorously reference the grandfather paradox, suggesting that while one can theoretically touch oneself, there are cautionary tales about altering the past.
  • A link to a scientific paper on closed timelike curves and causality is provided, although its relevance to the discussion remains unclear.

Areas of Agreement / Disagreement

Participants express differing views on the validity of the concept, with some asserting it is fictional while others suggest it might have some theoretical grounding. The discussion remains unresolved regarding the scientific legitimacy of the claims made.

Contextual Notes

Participants do not clarify the assumptions underlying their claims, and there is no consensus on the implications of time travel or the nature of causality in this context.

Chitose
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Hello, Chitose wonder chick again.

I watch serval sci-fi movie and some of It say about theory about same matter in different time.
like... If I traval back in time and meet myself in the past, I must not touch him. If I do, it will cause some chaos.

I wonder why?

I know It pure fantasy but It must base on some actual theory right?

can anyone tell me?

..........

PS. English is not my native language, forgive me If I wrong in gramma or spelling.
 
Physics news on Phys.org
I believe JesseM is the resident expert, but he's on vacation this weekend, and usually works in the SR and GR forum.
 
Chitose said:
like... If I traval back in time and meet myself in the past, I must not touch him. If I do, it will cause some chaos.

I wonder why?

I know It pure fantasy but It must base on some actual theory right?
Nope. It is total fiction. Nothing more than a plot device.
 
Yeah, you can touch yourself if you go back in time. But don't murder your grandfather before your father was born!

http://arxiv.org/abs/gr-qc/0206078
Time, Closed Timelike Curves and Causality
Francisco Lobo, Paulo Crawford
 
I though It's about same electromanatic pules to suck each other or some thing like that...

So it's just a plot huh.

Too bad:frown:
 
atyy said:
Yeah, you can touch yourself if you go back in time. But don't murder your grandfather before your father was born!

http://arxiv.org/abs/gr-qc/0206078
Time, Closed Timelike Curves and Causality
Francisco Lobo, Paulo Crawford

Unless you were supposed to, then by all means don't not do it!
 

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