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There's nothing to grasp. Materialistic free will, AKA soft determinism, is an extremely convoluted and complex (and ultimately sophistic) web of reasoning created by very intelligent people who found the (obvious) conclusions of hard determinism to be repugnant, and so use their brainpower to maneuver around it as best as they can. They do this mostly by fiddling with definitions until they have bamboozled themselves into believing that they have proved something. Once you have accepted determinism, free will cannot exist, not in the way one usually thinks of it. The only way you can get around the free will problem is to:
Reject determinism - I have never seen anyone do that successfully.
Posit the existence of a soul which is outside the currently understood laws of the universe - and there are too many commonsense objections to this that I cannot resolve.
Soft materialism is in a category of beliefs that I have labelled as 'so absurd only the very clever could convince themselves to believe it'
I don’t think that’s charitable. ‘Soft determinism’ is merely an acknowledgement that ‘free will’ and freedom/liberty in general the way they’re colloquially used don’t mean some kind of conscious override of the weight of deterministic history, but rather refer to much more mundane limitations in the material world on individual human will.
The animal whose desired path is blocked before them has no free will. The animal whose desired path is unblocked has free will. This is an entirely workable and normal conception of what ‘free’ means. Cf “you are free to go”, cf the constitution etc etc.
Can you execute a given desire? If you can, then in that instance you have free will for that task. No complex argument around determinism or the process by which you came to your desire is necessary.
What evidence directly supports the concept of "deterministic history"? What testable predictions does the concept of "deterministic history" allow one to make?
It seems obvious to me that "deterministic history" is not a falsifiable, testable concept, but rather an axiom. People believe in determinism and deterministic history because doing otherwise would be incompatible with their axioms. Determinism has been used to make testable predictions for many decades, and all those predictions have been falsified. All the evidence we have available to us directly contradicts determinism, none of the evidence we have directly supports it. Each of us has a lifetime's immediate, personal experience of Will, of making free choices moment to moment, of making decisions and struggling to choose one thing versus another. All of this evidence is simply handwaved by Determinism, not based on contrary evidence, of which there is none, but because if it is not handwaved Materialism is invalidated.
And all this is fair enough; axiomatic reasoning is the only reasoning we have available to us. The problem comes when people act as though their axioms are obviously evidence-based, when they are not.
This is a really interesting question. Is determinism falsifiable? that kind of feels like asking if trigonometry is falsifiable. Determinism is more theorem than theory, an exercise in hard logic rather than empirical data gathering. I think almost everyone would agree that the universe moves according to causality; that A leads to B leads to C, in a reliable, repeatable, (one might say deterministic) way. Determinism is merely the philosophy that you can extend that thinking from 'every part of the universe excepting the human brain' to 'every part of the universe'. In a dead universe, we would all be determinists.
I mean, what does the null hypothesis for determinism even look like? That causality is not true? That today we might mix 8 grams of oxygen and 1 gram of hydrogen and receive 9 grams of water, but tomorrow we might receive 15 grams? or that yesterday's water might spontaneously dissociate back into hydrogen and oxygen? Or perhaps into neon and feathers? Empiricism, the entire scientific method, is based on the truth of causality. If causality is false we have to throw pretty much everything out and just accept that we're all living in Plato's cave.
Or perhaps the null hypothesis is that causality is true everywhere... except the human brain. Not much of a null hypothesis, is it? Really feels like, if that's your theory, then determinism ought to be your null hypothesis.
Materialists generally claim that their viewpoint is simply the default, that there's zero evidence for anything non-Materialistic, and so they simply follow where the evidence leads.
Determinism is adopted because non-deterministic free will would pretty clearly break Materialism.
The problem is that there is precisely zero actual evidence for determinism itself, and there is an absolutely staggering amount of evidence for non-deterministic free will.
Every human has an entire lifetime's experience of making choices freely. No one has ever demonstrated actual deterministic control over the human will, in any way, to any degree, ever, despite repeated claims that such control was trivial and extremely-well-resourced and -motivated efforts to implement or demonstrate such control.
Despite this, Materialists routinely reject all evidence of free will on the basis of a determinism-of-the-gaps, having retreated from "we can directly, repeatably and arbitrarily engineer human will to our preferences" to "whatever you do was what you were always going to do, even if we can't predict it or control it or test this claim in any way". Determinism has been tested, and has failed all tests. After decades of steady retreat, the current version makes no testable predictions at all, but is precisely a statement of blind faith.
Observable free will is significant evidence that Materialism is wrong. But no human belief arises deterministically, and every human belief is chosen through an act of the will. Materialists choose to adopt Materialism as an axiom; evidence of free will conflicts with that axiom, and so it is discarded, not because it is disproven, but because weighting and filtering evidence is the purpose of axioms. Materialists know that free will can't exist, because if it existed it would disprove Materialism, and their adherence to Materialism is pre-evidential.
...And all the above is not an error to be corrected on the part of the Materialists, but rather a demonstration of how human reason actually operates. All beliefs are chosen. No one has ever or will ever be "forced" to adopt a belief, by evidence or by coercion or by any other mechanism. Some beliefs require more maintenance and effort than others, and some beliefs pay off more than others, but it all comes down to choice.
That we do not have access to a complete understanding of reality, and that the unknown unknowns are significant and must be accounted for.
Empiricism and the entire scientific method are not universal solvents. They have limits, and those limits should be understood and respected, not papered over, ignored or lied about. The later solutions have caused great harm and misery, and that harm and misery has never been adequately answered for.
Why? Within its limits, science and causality work quite well. Engineering is delightful. But my appreciation of air conditioning and microcircuitry and repeating firearms does not obligate me to ignore significant evidence that free will exists. I am comfortable saying that inert matter seems to run on strict causality, while the human mind does not appear to do so. This costs me nothing, requires me to paper over nothing, offered significant predictive value back when Determinism was still making falsifiable predictions, and seems to me to offer decent predictive value on the currently-untestable predictions that Determinism still allows itself.
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I mean, its oppositional, but I don't think it's unfair. When you follow determinism to it's logical conclusion you come to realize that everything that an animal or human does is a product of their brain structure, their surroundings, their sensory inputs, etc. Essentially, the human brain is a computer, and like all computers (all physical things, really.) it is deterministic. So, you declare "there is no free will! everything is predetermined, even my very thoughts!" And you are correct.
But then, along comes a soft determinist to say "Aha! but if we redefine free will in such a way that it instead represents the preferences of one of these deterministic machines and it's ability to have agency in this universe then free will does exist!" Well okay, yeah, I suppose, but all this really is is sleight of hand. You've twisted the concept of 'free will' until it no longer represents what it did before you learned of determinism. I accept the logic, I don't accept that you've demonstrated anything profound. Under this paradigm, a computer that wants to contact a server, and succeeds, has free will. But we don't think of smartphones as having free will, for obvious reasons.
Is it, in fact, a redefinition at all? It seems to me that ‘free will’ is really about the output space for whatever computation our minds do, whether that happens on a material or spiritual level. Anti-soft-materialism arguments struggle to explain what ‘classical’ free will that excludes it is supposed to be.
Meanwhile, it is possible to suggest at the (largely semantic, of course) difference between ‘hard determinism’ and the ‘soft materialist’ positions. Consider a criminal enterprise. Someone gets arrested, volunteers everything to the cops, gets released on bail, his co-conspirators say “what the fuck man, you have free will bro, why did you tell them that?”. The point being made isn’t a complex analysis of the internal process in the mind that occurs during reasoning, it’s a straightforward exhortation that this agent was not being externally forced to do something that it did anyway. It’s clear that it refers to a way of discussing the bounds of our behavior in a material reality, not an immaterial spiritual concept, which is why we don’t talk about having “free will” to regrow a leg or jump to the moon.
Defining free will as something that happens at the intersection of deterministic machines with good but imperfect predictive ability, material reality, and the forward passage of time fits with the way the term is generally used.
I think it is a redefinition. What you are describing is something most people would call 'freedom of action', or possibly just 'freedom' - the ability of an agent to do what it wants to without external interference. But under this definition, we could say that a Roomba has free will - because it can do what it wants (clean floors), but a prisoner does not, because he is unable to do what he wants (leave prison). This is very much at odds with how most people would use the term.
I agree that agents can make decisions to perform actions to alter the world. What I don't agree is that an agent - any agent - had the capability to make a decision other than the one that it ended up making. This is what most people would mean when they talk about free will - it's the idea that your snitch could have decided not to tattle, which is something that determinism rejects. the choice to snitch appeared unforced, but it was in fact as deterministic as was my Roomba's 'choice' to hoover my floors every day at ten o'clock.
I think i know what you're getting at here, but for the avoidance of doubt, determinism denies the possibility of spiritual decision making. The deterministic argument is:
In such a universe, “free will” more properly means the ability to consider multiple courses of action, and to reject any given potential choice based on conscious reasons, such as moral principles. In practice, our human wills are constrained by unconscious (“subconscious”) reasons, and not perfectly free.
FYI, I’ve had great success consciously removing unwanted reasons from my unconscious using Fourth Step tools from the Twelve-Step recovery method. I feel more free now than ever before.
But you're always going to reject the same ones and chose the one you were always going to, based on everything that has come before that decision point. You will always make the same choice given the same set of conditions. There is no such thing as "free will".
You seem to be constraining the definition of free will to something tautological, while trying to prove some meaningful point.
There are different categories/qualities of free will, specific to any given entity and context. Free will of material+spirit sapients in a material+spirit world looks freer to the philosopher than the free will of material sapients in either a purely material or a material+spirit world, since spirit is (presumably) acausal relative to the material. However, a theologian who presumes original sin is a spiritual condition which constrains the will to the selfish choice will think a purely material AGI a freer will than an unrepentant sinner.
Assuming a purely material world, an agent’s ability to carry out a given choice or to even think of that choice as a choice is naturally constrained in many ways, by fatigue and hunger, by senses and by neurology, by lack of abilities or skills, yet that agent is still functionally free to will whatever he can imagine.
I advise you to consider the concept of Turing completeness before calling my paradox more absurd than your tautology.
I'm aware of the concept. I just don't see how it does anything except back me up. If you can simulate everything a given person is going to do their whole life because you have all available information and enough compute, then how can you claim they have free will?
There is no such thing as free will because their can't be. Either things are causal and you were always going to chose left based on past states, or there are random fluctuations in the aether that somehow fired enough neurons at the same time for you to tip the balance into turning left instead of right. Either way you didn't have any more to do with the outcome than a ball rolling down a hill does.
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What would qualify as success?
Any logically coherent non-determinist explanation that meshes with our understanding of the universe, or even with not-yet understood parts of the universe.
I think you could do this with appeal to divinity, as per point 2 - 'god made us and wanted us to have free will so therefore we have free will' is logically difficult to refute - but as I said I think this runs into common sense objections, e.g. if we have souls then how can it be that brain damage can change our personality? Plus, most people I have had this debate with are atheists and so not able to lean on that.
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