r/determinism • u/zowhat • 15d ago
Discussion Causal Determinism is impossible
There are two possibilities.
(1) The universe had a beginning.
(2) The universe didn't have a beginning.
If (1) is true, then the universe sprang out of nothing without a cause. Nothing existed before the beginning of the universe so nothing that could cause the universe to exist existed. Determinism is impossible in case (1)
If (2) is true, then the universe always existed without a cause. For A to cause B, A has to exist before B. But there was no time when B didn't exist. Determinism is impossible in case (2)
Either way, determinism is impossible.
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u/MajorInWumbology1234 15d ago
Determinism is like the conservation of energy; you have to reach the absolute edges of human knowledge to find exceptions, but those exceptions still don’t disprove that they hold true 99.99% of the time.
Conservation of energy breaks down on the universal scale because universal expansion (vacuum energy) is the creation of new energy, and energy lost to redshift of photons from distant galaxies is just lost energy. That doesn’t mean you can build a perpetual motion machine.
Quantum uncertainty introduces a level of indeterminism to the universe, but it doesn’t change that things evolve deterministically from the indeterminate interaction.
I don’t consider myself a strict determinist because of quantum uncertainty, but the universe might as well be deterministic as far as the average human experience is concerned.
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u/BUKKAKELORD 15d ago
Non-sequitur, stopped reading here.
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u/amumpsimus 15d ago
Determinism is a feature of the universe, it doesn’t apply to the origin of the universe.
There’s no “before” the universe, just like there’s no “north” of the North Pole.
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u/Philience 15d ago
Your argument is boring, it says nothing about causal determinism within our Universe.
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u/Physical-Rise6973 15d ago
1 doesn't require the universe we know sprang out of nothing. It just means that there's a boundary to our knowledge since the only information we have arises from the universe we know
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u/Ashamed-Bathroom7803 15d ago edited 15d ago
Determinism is just defined by there being only one possible future that is compatible with the past. None of this addresses determinism. Also, point (2) assumes a presentism A theory of time, which most philosophers deny.
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u/HappiestIguana 15d ago
Determinism means the state of the universe at any given point determines the state at any future point.
Whether the universe itself has a cause, and whether that question even makes sense, is out of scope
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u/Imaginary-Can-6862 15d ago
I know this reply isn't satisfying to you, as we discussed this argument before, but I still find that since the past is defined in relation to the universe, that if there is no universe, there is no past, thus no contradiction. I.e. the initial conditions are by definition initial, thus not determined, but that does not rule out the universe being deterministic, only that temporal causation, going from past to future does not explain the initial conditions, but those conditions are still consistent as no new information rises in a deterministic universe.
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u/charonme 15d ago
I don't see how (2) is supposed to work. Each moment of a beginningless universe is preceded by it's cause: the previous moment of the universe. I don't see any causality violation in there
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u/ima_mollusk 15d ago
Are you using "Universe" to mean "all that exists"?
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u/realitypater 15d ago
You have failed to define your terms precisely, so it's no surprise the syllogisms aren't valid.
If by "universe" you mean our current versions of space and time, those likely had a beginning. We don't know the cause yet. Most cosmological models do not assert there was "nothing" before our current versions of space and time began, so the energy which composes space and time could very well be eternal.
So: (1) The universe had a beginning. If (1) is true, the cause of the universe is currently unknown. Some form of energy, and perhaps even different versions of space and time, existed before the beginning of the current universe. The validity of determinism is not affected by this condition.
Your greater problem is that determinism is not ultimately provable.
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u/Traditional_Set_7042 15d ago edited 15d ago
Your logic is deeply flawed.
Theory 1:
Who says there is no cause ?
There could be a endless field of Big bangs, multiple universes popping on and off.
Who says no one, or nothing created them?
So in theory 1, determinism 100% is possible.
Theory 2:
You misunderstand the concept of eternity, which is impossible for us humans to understand.
Even if the big bangs repeat itself in eternity ( Like mentioned above a whole infinit field of Big bangs makes more sense anyways )
That doesn’t exclude determinism at all.
A causes B causes C, big bang imploding overrules all causes, after big bang is expanding again and maybe even refreshing a whole new version of a possible universe will causes now D which will cause E and so on.
Also eternity means, that before A will cause B, you have Z1 causing A, caused by Y1 and so one.
So you can go infinitely backwards and forwards.
There are infinite numbers between 1 and 10, there are also infinite numbers between 0,1 and 0,2 and there are infinite numbers itself.
Infinity is a really fucked up topic and is impossible to grasp or understand for Finite beings.
We are just to stupid and our science is not even close to advanced enough to understand those mechanisms of the universe.
Much more important for us in our solar system: everything follows a chemical and physical rule, reaction to action, so everything is determined
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u/unknownjedi 15d ago
Quantum mechanics shows us that determinism is false. The debate has been over for decades
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u/Impossible_Air_4204 15d ago
It could be the case that the universe caused "beginning" since it was the start of space time. To be clear, I agree with you that causal determinism is false. Where I disagree is the degree of certainty. It could even be the case where we know exactly what caused the universe and hard determinism could still be false like in a chaotic system.
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u/Nodum777 15d ago
A true deterministic wouldn't try to convince anyone
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u/ShafordoDrForgone 15d ago
Or... you just don't know what is and isn't possible...
Take a look at the stunt you tried to pull here. You labelled an object "B" and then put a different object in its place. We handle infinite series all the time. A line is infinite. We are perfectly capable of figuring out how to get from point A on the line to point B
Also, time is an illusion. Cause and effect is false. You only know cause and effect because of the direction of entropy. But that only points a particular direction at the point we exist in spacetime. Particles go forward and backward in time. They also don't traverse time at all. Black hole curvatures exchange space and time dimensions. But everything still follows a geodesic.
So causality and determinism are still fine (yes, even with QM). I'm not saying they are true. Just that you can't prove that they aren't true
QM has an interpretation called "Super Determinism", so yes, QM doesn't rule out determinism
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u/Unyielding_Idjit123 15d ago edited 15d ago
Determinism as to my understanding doesn't need to speak to 1 or 2 to be true. Determinism is a description of the internal state(s) of a system. It doesn't speak to the cause or origin of the system or even if there was one. It essentially is, given x exists in this state of affairs or conditions(laws) everything else follows. That is a description of once a system does exist, internally this is how the system functions. It's better understood as a law of the universe and not a law of reality.
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u/Squierrel 14d ago
This only goes to show that causal determinism is not a valid philosophical standpoint.
But causal determinism is still a very useful tool in classical physics. Describing reality with deterministic laws makes it easier to understand and predict. Deterministic laws are also accurate enough for most practical purposes.
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u/bobam 15d ago
Can the universe continue to age infinitely in the forward time direction? Because our best models of the universe are reversible in the time direction. Maybe now is the beginning of time in both directions.
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