Oleg Zabluda's blog
Thursday, June 28, 2012
 
"Terminator-1" (1984), "Back to The Future I" (1985), Futurama "Decision 3012" (2012), got it exactly right, in that...
"Terminator-1" (1984), "Back to The Future I" (1985), Futurama "Decision 3012" (2012), got it exactly right, in that order. When you go back in time to the past, you can't prevent stuff from happening. You can only make stuff happen, which otherwise wouldn't have.

To put it in layman's terms, you can't kill your own father, before you were born, you can only save your own father, before you were born [1].

http://en.wikipedia.org/wiki/The_Terminator
http://en.wikipedia.org/wiki/Back_to_the_Future
http://en.wikipedia.org/wiki/Decision_3012

[1] Indeed forced to, since one can predict the past from the present, making "—All_You_Zombies—" one long and convoluted zugzwang.
https://plus.google.com/112065430692128821190/posts/E2pWAnGEi2c

For discussion by non-insane people, see

Kip Thorne "Black Holes and Time Warps" (1994) pp. 508–516.
http://books.google.com/books?id=GzlrW6kytdoC&pg=PA510

Kip Thorne, et.al.  "Billiard balls in wormhole spacetimes with closed timelike curves: Classical theory" (1991)
http://authors.library.caltech.edu/6469/ 

http://en.wikipedia.org/wiki/Novikov_self-consistency_principle
http://en.wikipedia.org/wiki/The_Terminator

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