The causal loop paradox is a kind of self - fulfilling prophecy . The paradox happens in atime locomotion storywhere the event of the future depend on change the event of the past times . How does the loop start if there is presumably a version of the past times that remains insensible by the future ? The clock time loop becomes both inescapable and disjointed because there is no possible way of life for it to begin . Whether the solvent of superpower or technology , time traveling in Sci - Fi movies seems to be constantly grappling with this problem .
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The Terminatoris one of directorJames Cameron ’s best moviesbut it is also a perfect example of a causal loop , and the problem within that . Kyle Reese is send back in time from a future dominated by Skynet in ordering to save Sarah Connor from a cyborg assassinator that has also been sent back from the hereafter . Sarah must be save so that she can eventually give birth to the next leader of the impedance , John Connor . As a romance acquire between Sarah and Kyle it becomes obvious that the latter is John ’s Father of the Church . But therein lies the paradox : John Connor only exist because he place his own founder back in clock time . So how did John Connor come to be born in the initial timeline , before Kyle Reese go back in time?The Terminatoris ineffectual to address the number .
Some flick take a more direct approach when it come to the causal loop paradox . The twist ending to the intelligentSci - Fi time travel movieTriangleis that the sea wolf stalk an tip-tilted racing yacht is in fact a future version of one of the survivors . The killer is catch in a time closed circuit of hunting watch and hunt . Likewise , in the thrillerPredestination , Ethan Hawke plays a transgender detective ship back to 1970s New York so as to stop a bombing only to discover that he is both the poor boy and the investigator . Hawke ’s role was placed into a time closed circuit by his supervisory program who want to extend his authority outside the constraint of clock time .
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