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

  1. Dec 5, 2009 #1
    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.
     
  2. jcsd
  3. Dec 5, 2009 #2

    atyy

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    I believe JesseM is the resident expert, but he's on vacation this weekend, and usually works in the SR and GR forum.
     
  4. Dec 6, 2009 #3

    DaveC426913

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    Nope. It is total fiction. Nothing more than a plot device.
     
  5. Dec 6, 2009 #4

    atyy

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    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
     
  6. Dec 7, 2009 #5
    I though It's about same electromanatic pules to suck eachother or some thing like that...

    So it's just a plot huh.

    Too bad:frown:
     
  7. Dec 8, 2009 #6
    Unless you were supposed to, then by all means don't not do it!
     
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