Three possibilities come to mind:

Is there an evolutionary purpose?

Does it arise as a consequence of our mental activities, a sort of side effect of our thinking?

Is it given a priori (something we have to think in order to think at all)?

EDIT: Thanks for all the responses! Just one thing I saw come up a few times I’d like to address: a lot of people are asking ‘Why assume this?’ The answer is: it’s purely rhetorical! That said, I’m happy with a well thought-out ‘I dispute the premiss’ answer.

  • TheBananaKing@lemmy.world
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    3 months ago

    Confabulation.

    Look at split-brain patients: divide the corpus callosum down the middle, and you effectively have two separate brains that don’t communicate. Tell the half without the speech centre to perform some random task, then ask the other one why they did that - and they will flat-out make up some plausible sounding reason.

    And the thing is, they haven’t the slightest idea that it isn’t true. To them, it feels exactly like freely choosing to do it, for those made up reasons.

    Bits of our brains make us do stuff for their own reasons, and we just make shit up to explain it after the fact. We invent the memory of choosing, about a quarter of a second after we’ve primed our muscles to carry out the choice.

    I think a chunk of this comes down to our need to model the thoughts of others (incredibly useful for social animals) - we make everyone out to be these monolithic executive units so that we can predict their actions, and we make ourselves out to be the same so we can slot ourselves into that same reasoning.

    Also it would be a bit fucking terrifying to just constantly get surprised by your own actions, blown around like a leaf on the wind without a clue what’s going on, so I think another chunk of it is just larping this “I” person who has a coherent narrative behind it all, to protect your own sanity.

  • atro_city@fedia.io
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    3 months ago

    Simple: We cannot predict the future. If you don’t know what’s going to happen nor whether it is being controlled, you do not know whether your actions are predetermined. Every movement you make might be the result of universal programming. What I’m typing, have sent, and you are reading might be the sequence of events that was always supposed to happen.

    Free will is, IMO, as unknowable as whether an almighty being exists. That “almighty being” might have created this existence, but might also exist in its own realm that was created by another “almighty being”. The chain might be infinite and it might not be. Asking these questions is like asking “can we reach infinity”.

    • Feathercrown@lemmy.world
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      3 months ago

      Really making a strong argument by calling people dumb. If you were as smart as you think you are, you would realize the value of empathy.

      • morphballganon@lemmy.world
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        3 months ago

        Your response was an emotional one, which does not mean my argument is incorrect. However, it does reveal your insecurities.

        • Feathercrown@lemmy.world
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          3 months ago

          If you think you can accurately diagnose my insecurities from one comment, I don’t know what to tell you. My response evoking an emotional response in you does not make it in itself emotional. I wrote it sitting on the toilet because I was bored at work, not because I felt that it was especially important.

  • boatsnhos931@lemmy.world
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    3 months ago

    This is the kind of pointless shit that I think of when I smoke too much. If you have a pipe in your hand, SIT IT DOWN 😜

  • Bear@lemmynsfw.com
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    3 months ago

    Yes, there’s an evolutionary purpose for the concept of purpose. If you believe you can do something and show some initiative then you’re more likely to get it. The early bird gets the worm, and the bird that anticipated the worm is the early bird. This is true both for humans and cells in a petri dish.

  • Juice@midwest.social
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    3 months ago

    Why are we assuming we don’t have free will? We do. Its not total freedom, our freedom is contingent on existing circumstances, but hard determinism is easily disprovable.

    The idea that there is no free will is a mind fuck that keeps you from questioning your reality. You might as well ask, “assuming the earth is flat, why does the stick disappear on the horizon?”

  • Ephera@lemmy.ml
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    3 months ago

    Our brains cannot store all the experiences we ever make. It rather only stores ‘hunches’ (via many weightings of neurons). In particular, it also mixes multiple experiences together to reinforce such hunches.

    This means that despite there being causal reasons why you might e.g. feel uneasy around big dogs, your brain will likely only reproduce a hunch, a gut feeling of fear.

    And then because you don’t remember the concrete causal reasons, it feels like a decision to follow your hunch to get the hell out of there.
    This feeling of making a decision is made even stronger, because there isn’t just the big-dog-bad-hunch, but also the don’t-show-fear-to-big-dog-hunch and the I’m-in-a-social-situation-and-it-would-be-rude-to-leave-hunch and many others.

    There is just an insane amount of past experiences and present sensory input, which makes it impossible to trace back why you would decide a certain way. This gives the illusion of there being no reasons, of free will.

  • Xhieron@lemmy.world
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    3 months ago

    That’s a very large assumption. The simplest explanation is that we feel like we have free will because we do. Quantum mechanics suggests some major challenges to determinism, and the best arguments to restore it require a very unsatisfying amount of magical thinking.

  • bastion@feddit.nl
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    3 months ago

    Look into Kurt Gödel’s incompleteness theorem, and the philosophical implications of that.

    A lot of times, when we’re dealing with the assertion that we don’t have free will, we’re analyzing that according to rule-based systems. The system that we use to evaluate truth isn’t entirely rule-based, and is necessarily a superset of what we can consciously evaluate.

    In effect, some less-complex system that is a subset of your larger mind is saying ‘you have limits, and they are this.’ But your larger mind disagrees, because that more rule-based subset of rights is incapable of knowing the limits of its superset. Though, we just feel like it’s ‘off’.

    If it feels like it’s off, there’s a good chance that the overall way you’re thinking of it isn’t right, even if the literal thing you’re focused on has some degree of truth.

    In short, it’s possible to know something that is technically true, but that isn’t interpreted correctly internally.

    If you accept the model that you have no free will without processing the larger feelings it evokes, then whether or not your internal sense of free will is rule-based, you’ll artificially limit the way you think to filter out the internal process you think of as free will. …and that can have massive consequences for your happiness and viability as an organism, because you’ve swapped away that which you actually are for labels and concepts of what you are - but your concept is fundamentally less complex and led capable than you are as a whole.

    Fortunately, rule-based systems break when faced with reality. It’s just that it can be very painful to go through that process with what you identify with.

    • Semperverus@lemmy.world
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      3 months ago

      Help me understand if I am interpreting you correctly:

      We have free will in a deterministic universe because feelings?

        • meep_launcher@lemm.ee
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          3 months ago

          If you can reword you initial post, that would be great. I was also having trouble following what you were saying.

          • bastion@feddit.nl
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            3 months ago

            If the concept of the universe being deterministic interferes with one’s concept of free will, then one of these must be true:

            • the universe is nondeterministic, or has nondeterministic elements
            • one’s concept of determinism is incorrect
            • one’s concept of the impact of determinism on one’s own free will is incorrect

            But of course, that begs:

            • ones concept of free will is incorrect

            But that cannot be, because your notion of free will is for you to decide, even if the universe is somehow determinate.

            But that doesn’t mean the universe is or is not deterministic, it just means one or more of the above three things.

            Ultimately, though, I was not making an argument concerning the fundamental nature of free will and determinism, or whether or not the universe is deterministic. I was arguing for completely processing fundamental concepts before you accept them to be true, because often times we accept a lot of false implications alongside the true things we accept.

            One’s world view holds immense power in one’s own life. People do not intentionally act in accordance with things they do not believe to be the case. To accept determinism without fully processing the implications thereof, particularly if it “feels wrong but seems true” is to enter into and sign up for those internal conflicts writ large in one’s own life.

            I also don’t believe that the universe is absolutely deterministic, but that’s a different argument that others have made better than I likely would.

            • meep_launcher@lemm.ee
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              3 months ago

              Okay, in other words we need to consider our assumptions and definitions of “Free will” and “Determinism” when answering this question?

              I really enjoyed this video on Compatibilism, and the view of Patricia Churchland (around 5:50) where she says we should reframe the question away from “what choices we have” to “how much control do we have”.

  • edric@lemm.ee
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    3 months ago

    Because maintaining the illusion keeps us going as normal and won’t break the simulation. /s

  • xylogx@lemmy.world
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    3 months ago

    A better question is, is there any difference between the illusion of free will and actual free will. Is there some experiment you could conduct to tell the difference?

  • nikaaa@lemmy.world
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    3 months ago

    I have heard somewhere that some people seemed to believe that behind each human’s actions, there is some kind of “daemon” that is invisible, but moving the humans like puppets.

    This is conceptualized in the theater mask, through which one can speak.

    The daemon speaks through the human as a theater actor would speak through a mask. (The latin word for that mask is “persona” (literally “sound-through”) and that’s why we call a person a person today (because they are controlled by a daemon who speaks through them)).

  • undergroundoverground@lemmy.world
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    3 months ago

    I think its because we’re only just now coming to terms with the fact that we’re simply a collection of desires, the culture we were born to and stories we tell ourselves. In keeping, we had to have a story to tell ourselves and free will existing is the more compelling of the two.

    I don’t think there’s an evolutionary purpose. To me, we just became far more self aware than our limited knowledge of the world we find ourself in could cope with and its more of a coping mechanism than anything else.

  • JoeKrogan@lemmy.world
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    3 months ago

    Perhaps it is the illusion of choice and the choice you make was always going to be that one due to all of the events that shaped you and the events that shaped the people that shaped you etc all the way back to the big bang.

    I contemplate this from time to time.