Paradox 5.3 | Meta-time 4.3 | Cumulative concept of time, 13.3 | Two dimensional time 4.2 | 二次元時間 4.2
In the movie Looper, Young Joe (in the year 2044) influences Old Joe (in the year 2074) in the sense that Young Joe’s every action affects the state of Old Joe, because Old Joe is Young Joe’s future self.
For example, after Young Joe had hurt his own arm, the corresponding wound also appeared on Old Joe’s arm, even though Old Joe had already time-travelled back to the year 2044.
All of Young Joe’s actions are the causes of Old Joe’s state. Young Joe is in the past of Old Joe.
Old Joe (2074-Joe) = [ …, Young Joe (2044-Joe), … ]
B = [ …, A, … ]
However, Old Joe (2074-Joe) had time-travelled back to the year 2044, meeting the Young Joe.
So, some of Old Joe’s actions would affect Young Joe’s decisions on his own actions. In this sense, Old Joe also influences Young Joe indirectly. Some of Old Joe’s actions are the causes of Young Joe’s state. Part of Old Joe is also in the past of Young Joe.
Young Joe (2044-Joe) = [ …, Old Joe (2074-Joe), … ]
A = [ …, B, … ]
However, it is logically impossible to have both
B is in the past of A
A is in the past of B
just as it is logically almost impossible to have both
D is a part of C
C is a part of D
If you insist that it is the case, the only possibility is that
C = D
In this analogy, neither C nor D is really a “part” of another. In the time travel case, neither A nor B is really in the past of another. In other words, A (Young Joe) and B (Old Joe) have no time relationship. Neither’s actions are the causes of the state of another.
The real causes of Young Joe or Old Joe’s states are actually not within the movie story’s timeline. The real causes are the decisions of the author of the story.
— Me@2013-07-03 6:19 PM
2013.07.08 Monday (c) All rights reserved by ACHK