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> What you're modelling has no agency

I see no reason to think that just because something is predictable it is not free. That seems like such a strange constraint to me that I can only assume that we have different understandings of what it means to be free.

If I know someone well, I might predict that when offered a free choice between an ice cream and a brussels sprout they will choose the ice cream. The fact that I was able to predict that with an incredibly high degree of certainty didn't stop them from being free.



I understand why you would call your offer a free choice, the are no constraints attached to the options that could obviously influence the decision, for example picking the ice cream also requires paying a million. Different people with different preferences would make different choices.

But pick one specific person, why would you call their pick a free choice? There choice might not be influenced by your offer but it will be by their preferences. Let them choose, rewind the universe a minute or two, let them choose again. They will make the same choice over and over and over again.

Maybe not if there is true randomness in the universe and this choice happens to be influenced by some random event.


Given the same starting state, either you get the same outcome every time, or there's randomness involved, that is the point.

I challenge you to describe a selection process that is not fully deterministic but where the lack of determinism is caused by something other than randomness.

That is what you need to be able to come up with to define free will in a way that isn't smoke and mirrors.

There's no agency. Nothing but automatons.


> There's no agency. Nothing but automatons.

Only if you define 'agency' as requiring magic. If you think that there's no conflict (as I do) between being an automaton and having agency, then there's no problem here.


Yes, if I argue that "free" means "not free" there's no problem there, I agree. Which is why I keep asking those who believe in free will here to actually define it. People almost never even try, because once you do it very quickly becomes clear that it's incredibly hard to the point that you'd have a theory named after you and get taught in university philosophy courses if you managed to come up with something that isn't obviously broken.

The point being that if you start asking questions to determine what people think free will means, you'll find most will argue an automaton can not have free will. In which case to "rescue" free will you need to come up with a way in which entities with supposed free will are not automatons.

So, sure, it is possible to posit an infinite set of theories of "free will" that are true. But I'd claim that nobody has so far managed to come up with one that is both true and that most people will agree fits the woolly concept of "free will" the way most people use it.

The concept is almost religious in the sense that most proponents of it are unwilling to try to nail down specific definitions that might give rise to testable hypotheses, and those who do tend to come up with definitions that are so far from the common understanding as to be meaningless.


I think free will is the feeling of being a choice making agent in the absence of unreasonable external constraints. This isn't original or unique with me, and I've held this view for quite a large number of years (e.g. this comment from 6 years ago: https://news.ycombinator.com/item?id=11740316). It fits pretty well with what people mean when they say 'free will' or 'free choice' in normal every day life (i.e. if you have a gun to your head, you don't have free will, but in lots of other cases you do).

Your definition of it being entirely nonsensical is clearly even worse than this definition for being accepted the way most people use it, since your view implies that there is nothing people mean when then say 'free will', while the fact that almost everyone can tell the difference between someone robbing a bank of their own free will and someone robbing a bank because their loved one is being held hostage tells you that it really does have meaning.


Try probing what people think having free will actually means, and you'll quickly see that people tend to react very strongly if you suggest that they don't have some vague undefined ability to take actions that are not defined merely by the state of their brains and inputs.

To me what you describe does not at all match what I've observed people try to defend as free will whenever you peer beneath the vague veneer of external coercion.

> Your definition of it being entirely nonsensical is clearly even worse than this definition for being accepted the way most people use it, since your view implies that there is nothing people mean when then say 'free will', when there clearly is something that is meant.

That is not at all what I meant by calling it nonsensical. I am very sure that people do mean "something" and my experience is that this "something" includes a very strongly held belief that peoples actions can't be predicted based purely on the state of their brains and inputs. Try to suggest to people that maybe they're effectively just machines, and you'll find a lot of people balking at it, because it e.g. would imply no soul or anything to set us apart.

What I meant by calling it nonsensical is that when you start probing into why people hold beliefs like that, you'll find it evaporate as you probe. You'll find people can't put up arguments for, but more critically few can even describe a version of free will that fits their beliefs.

You've given a definition, and that's great, but it's a definition that defines away the problem under discussion - nobody who argues against free will would disagree with you that there exists a feeling of being a choice making agent. We disagree with those who claim that we are choice making agents other than in the same way that an automaton can be.

So you are right in the sense that free will by the definition you have given exists. But that's not the kind of free will most people here who are denying free will are debating.

If anything, the definition you have given tends to be an important answer to those who believe in "hard free will" to disambiguate them for why you should keep making choices if you don't have free will: Because whether or not it is an illusion, we do have that feeling, and whether or not we have control over the choices made, if we don't make any choices we still suffer the consequences. So the only logical choice, illusory or not, is to still make choices as if you have free will whether or not you think we have "hard free will".

That said, once one decides that "hard free will" doesn't exist, it tends to have a significant effect on personal beliefs. E.g. punishment (as opposed to rehabilitation, or incarceration for protection) becomes cruel if you accept that "hard free will" is an illusion - a person may believe they have free will, but if it's an illusion we're punishing people for things they didn't have an actual choice in. (Note that this does not really affect the issue of coercion - a person threatened with a gun to take your example might still be due different treatement than one who did something bad without being threatened, because the latter is still more likely to be a risk to others; but there's a difference between risk mitigation/protection/rehabilitation and vengeance - if it was a truly free choice based on "hard free will" vengeance might well be morally justified, while without "hard free will" vengeance is morally horrendous)


You've got some interesting points there, but I think that the reaction some people have to the idea that they might be deterministic is actually to do with dualism and not free will. People try to pull free will into the dualism debate because they are desperately looking for reasons to back up their feeling that they are essentially more than pure material. I don't think that these two topics really have much to do with each other, which I think can be seen by looking at what people really mean when they actually talk about free choice and free will in everyday life rather than in philosophical conversations where they're already trying to justify a position.


I agree that is probably part of it. In terms of "hard free will" that debate is of course entirely orthogonal - a soul would just be another part of the combined system under consideration, but I can very well see people seeing the two as combined.

> I don't think that these two topics really have much to do with each other, which I think can be seen by looking at what people really mean when they actually talk about free choice and free will in everyday life rather than in philosophical conversations where they're already trying to justify a position.

I certainly agree that people often conflate these two separate subjects. This is also part of why I push so much on definitions, because so much of the time we speak past each other when discussing these subjects.


> ability to take actions that are not defined merely by the state of their brains and inputs.

How would one prove/falsify that one's actions are merely a function of their brain state and inputs?

Even assuming we have a perfect mapping of the brain and perfect measurement of all neural action, experiments still happen over time and the act of observing changes the observed, so you'd never have repeatability.

It seems to me that determinism is as unscientific as the soul hypothesis.


You can reduce that problem arbitrarily: To falsify determinism all you need to show is any instance, however small, of a non-random source of events without a measurable source.

To raise serious questions, you don't even need to prove the existence of such an effect - just finding even individual particles reacting in ways that seems to show structure (so e.g. ruling out randomness) without a reasonable idea as to cause would justify substantial effort in identifying the cause, and each failure to identify any would successively and significantly weaken the justification for determinism.

In other words: Same as with any other hypothesis for which no experimental data in history indicates otherwise.

Given that most of our reality involves trusting cause and effect, and to an extensive amount measuring it, and no such origination has ever been shown, it is justified to consider determinism to be true until there's data to show otherwise.


I'm none the wiser.

What is a "non-random source of events"? Did you mean sequence of events?

Picture a band playing live on stage. Is the music produced random? Is it measurable by brain state/inputs? What if one of the musicians is slightly off tempo? What if one of them plays a wrong note? Is that sequence of events random enough? And is it still all measurable?

> each failure to identify any would successively and significantly weaken the justification for determinism

Failure to justify could also be explained by determinism. As could every other outcome from every experiment, since determinism is, by definition, the meta cause of cause and effect itself.




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