I’ll be using two analogies through this discussion so I’ll outline first:
Theory One:
'There is no time.’
Simple really! There is no such thing as time, it’s just a perception invented by beings with limited life spans.
Theory Two:
‘
I have dubbed this theory the ‘
Once you arrive, you begin your nefarious scheme. You whip out your Sniper Rifle. You take aim at your grandfather, bashing his plastic spade around in the sand pit. You fire.
What happens next? Well, there are essentially two possibilities.
Firstly, the answer is nothing. The gun misfires, the shot somehow misses, or some kind of unforeseen and unavoidable event (or series thereof) always prohibits you from killing your grandfather. This theory is potentially dodgy, because it tends to imply some kind of cosmic fate. Cosmic fate implies the existence of some kind of God. This is not scientific. If you avoid this explanation, other potential answers are:
a) Chaos theory is a load of shit. No event can change the final outcome. This doesn’t mean there’s a God. It’s just….the way things are. Nature is just stubborn.
b) The river was always flowing this way. Your brown poo line is actually a tiny stream that flows the other way and then back into the river. It always has, and always will. Because it was always like this, you didn’t change anything. You were just following the river.
Secondly, and point b) leads us nicely to this, is that perhaps you do shoot your grandfather. His five year old head explodes like a watermelon. And nothing changes. You soon discover he was never your grandfather because your GREAT Grandparents covered up his death least they become suspects, and adopted another boy who is your true Grandfather. This is really pretty close to our first point. The idea here is that you can do whatever you want, but your actions to try and change what will happen in the future are actually what cause the future to be like that in the first place. (Spoiler follows) we see this in Déjà vu when the note they send back is sent to Doug’s partner and results in his death, which they were trying to avoid. Oops. If they hadn’t sent the note, he would not have died. See? Sucks.
Potential problem with this theory? It implies knowledge gaps – it implies it is impossible to know exactly what happened or what caused what in the past. This is kind of dubious. What if you were to travel into the past by only five minutes, to same the destination from which you left? Wouldn’t you know exactly everything that was going to happen?
In summary,
Déjà vu explained this theory by saying it was the mighty
But what if you didn’t just throw a pebble into it? What if you dropped 16,000 tonnes of dirt into the river? Theory 3!
Theory 3:
Confusing, twisty river.
This theory is initially straight forward. You do something that changes the past. As such, the future changes. You kill Granddad, so you are never born. The future unfolds in a massively different way. Chaos theory – you have diverted the river along another path (ie, you piled huge mounds of dirt into it). However, this raises the single most confusing question with time travel.
What happens to you, once your grandfather is dead? And as a result, what further effects will it have on the future and the past?
A) You immediately cease to exist. Because you were never born, you never went back and killed your grandfather. You see the issue here. If you weren’t born, you didn’t kill him. So you WERE born. So you DID kill him. So you were NOT born. So he didn’t die. So you WERE born. So you did kill him. So you were NOT born…
Basically, you’ve fucked it. Time is stuck in this dirty loop, because it’s only one river. You can change where it goes, but that’s it. It cannot become two rivers. As such, you cannot kill your grandfather, and continue to live in the world where he is dead (ie, you can’t exist in 1932 once you pull that trigger).
B) Nothing happens to you. You DO continue to exist in this new future. Your existence is independent of the flow of time once you leave it to rejoin at a different point. This is commonly believed to be more plausible, if only because no one knows what happens in the first example. Does the universe implode or something? However, it does imply that time is kind of meaningless again. This makes some people shitty.
Theory 4:
River
Hee hee. Notice that there are no dotted lines? That’s because for every change, for every decision, for every action, a brand new time line is created. It is independent of the others. They are infinite and they co-exist. This is the parallel dimension theory. Where something different has happened. When you kill your pops, a new line is created. Because the original line, where you came from, still exists, you are still able to come back and kill him, so we don’t get that fucked up ARRGGHH loop of repetition with the chicken/egg problem.
There are some potential issues with this:
a) It is hella complex. No real math or scientific theory can justify or explain the existence of parallel universes successfully. This doesn’t mean much, because humans are inherently stupid and mentally limited, but it’s worth considering.
b) You’re no longer really just time travelling, you’re editing parallel universes. If you went back to stop World War 2 ever happening, you don’t really stop it. You create a new universe in which it doesn’t happen. In an infinite number of other universes, millions of people still die in WW2. So why bother?
c) Oh, also, there can be no theory of souls in this universe, not in the biblical religious sense, anyway. Because there an infinite number of you. Of everyone. You are NOT a special child of God. You are NOT a snowflake.
[SPOILERS FOLLOW]
Déjà vu uses (we deduce) either 3B or 4. The thing is, we know Doug tried at least once to alter the past. And we know he failed at least once. The movie both chokes and excels around this single, important point. If it is 3B, then the river can be diverted, but it is difficult to do so. It is like a rock in the path of the river that you wish to avoid. Your initial attempt shifts it slightly, but the water still hits the rock. So you try again, and again, each shift moving it further to the side, until it misses that rock totally. Ta da, future changed.
Or it’s 4A. Any one of a million different decisions or butterflies flapping their wings etc have created parallel universes. You have created/ended up in one that avoids that rock.
I like the 3B possibility. That’s cool. You can try again and again, and maybe you’ll succeed, because it’s possible, it’s just hard. That’s a very human idea. 4 is gay because it’s just one of the zillion different outcomes. It makes you seem kind of insignificant. Either way, they did kind of choke by not really highlighting what was done differently the second time through. Right up until they board the ferry at the end of the film, nothing has gone differently. Why does everything suddenly change? It’s never explained. You could argue that’s up to the viewer to think about you’re wrong. It’s a cop out. The rest of the movie is spent showing you how identical and unavoidable everything else is. Then all of a sudden, it can be changed.
Wtf.
@_@
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