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Do Subatomic Particles Have Free Will?

An anonymous reader sends in a Science News article that begins: "Human free will might seem like the squishiest of philosophical subjects, way beyond the realm of mathematical demonstration. But two highly regarded Princeton mathematicians, John Conway and Simon Kochen, claim to have proven that if humans have even the tiniest amount of free will, then atoms themselves must also behave unpredictably." Standard interpretations of quantum mechanics, of course, embrace unpredictability. But many physicists aren't comfortable with that, and are working to develop deterministic interpretations of quantum mechanics. Conway and Kochen's proof argues that these efforts will be fruitless — unless one is willing to give up human free will, in a very strong sense. The article quotes Conway: "We can really prove that there's no algorithm, no way that the particle can give an answer that is unique and can be specified ahead of time. I'm still amazed that we can actually manage to prove that."

26 of 608 comments (clear)

  1. Uh, what? by Anonymous Coward · · Score: 3, Insightful

    There's already considerable evidence that humans don't have free will, but that free will is (essentially) an illusion created by your brain.

    So, no, particles do not have free will.

    1. Re:Uh, what? by ceejayoz · · Score: 3, Insightful

      But what, then, is guiding us to believe we have free will?

      The fact that there are so many variables constantly changing as to construct the illusion of it.

      That, and the desire to have some purpose - any purpose - to our behaviours.

    2. Re:Uh, what? by Skevin · · Score: 3, Insightful

      I already tend to believe humans don't have free will to begin with. We are governed by a set of rules, that while we might think we are free to take a drastically different action, there are further rules upon those rules which determine why we took that action.

      Okay, so as an example... it's close to lunch time, and I haven't eaten all day. I have money, and I'm right outside a burger joint. Is it Free Will that I decide to go inside and buy some food? What if I watched a video on arterial plaque buildup the previous day and decide to try to find a salad instead? Is it Free Will, or was my logic governed by another set of rules that determined I would seek a healthier alternative? We might think our actions are determined by a thought process, but I've been philosophizing heavily as to how those thought processes got into place to begin with.

      Solomon Chang

      --
      "Twice half-assed makes an ass whole." --Solomon K. Chang
    3. Re:Uh, what? by unity100 · · Score: 3, Insightful

      then fetch that considerable evidence. dont produce arguments out of your butt.

    4. Re:Uh, what? by Kagura · · Score: 5, Insightful

      You mean the extremely complex deterministic chemical reactions in your brain will ignore his future posts, not your free will.

    5. Re:Uh, what? by fastest+fascist · · Score: 3, Insightful

      If a desire can guide us, how does that differ from free will? So the mind is basically a combination of brain "modules" of varying function and complexity - how does that nullify the idea of free will? You ARE your brain (and the rest of your body, of course), therefore if your brain is able to moderate it's own actions, you have free will.

    6. Re:Uh, what? by XcepticZP · · Score: 5, Insightful

      Exactly. We, people, want to believe that we are all unique. This dates back to when philosophers starting separating humans from everything else, which they dubbed "mindless automatons". We humans are supposed to have a "soul". Determinism takes all that away from us and simply tells us that we really are not separate from the environment, because we're made of the same things. Free will was spawned by the same thing that spawned religion.

    7. Re:Uh, what? by BPPG · · Score: 3, Insightful

      I'd say that feeling if you felt that it was necessary to philosophize about it, then that itself would suggest that you do have free will.

      Logic and free will are definitely not mutually exclusive. I'd go as far to say that curiosity and sentience may require free will, and logic/philosophical discord are a means (or rather, one of the only appropriate means) to satisfying that curiosity. Otherwise, we're all just automatons.

      --
      What's the value of information that you don't know?
    8. Re:Uh, what? by atlep · · Score: 4, Insightful

      You assume ~A and draw the conclusion ~B. That's not justified.

      One thing about logic is understanding when to use it.

      You are correct that A->B does not imply ~A->~B.

      When you have ~A you do not know anything about B, and cannot make a conclusion based on the model.

      However, A->B was never ment to be a complete model of the possible relationships between conscious minds and conscious atoms. It describes only one relatinship. If we want to understand what ~A leads to, we need to look beyond A->B and at the world we're trying to model. And doing that, we see that if we have ~A (no free will) then there is no reason to suspect atoms with free will either.

      So there is justification for extending the model and say that ~A->~B

      So asuming atoms have not free will, since we don't, ~A from ~B, is a fair and valid conclusion. It's not a logical proof derived from A->B, but it was never claimed to be either.

      The real error here was to use an incomplete model to say that a justified conclusion that was not part of the model was false.

    9. Re:Uh, what? by indifferent+children · · Score: 3, Insightful
      But what, then, is guiding us to believe we have free will?

      The same over-active "agency detection" apparatus that tricks us into thinking that a moving shadow or a bolt of lightning is a god or spirit. We have a really poor (in the false-positive direction) agency detection apparatus, which I have seen explained (Gould? Sagan?) as: those who assumed that the moving shadow was out to get them, outlived those who assumed that it was just the wind in the trees (because sometimes it was a hungry agent). Until concepts such as tithing were invented, there was little survival penalty to seeing non-obvious agents were there were none.

      --
      Censorship is telling a man he can't have a steak just because a baby can't chew it. --Mark Twain
    10. Re:Uh, what? by fastest+fascist · · Score: 3, Insightful

      A steam engine does not, as far as I know, experience anything, nor does it consider itself an entity in any way. I can't, strictly speaking, prove that you do, either, but you yourself know you do. What's experiencing if not a way to get information from the world in order to make decisions - with free will - about it? In any case, judging by the quote you posted, it seems we more or less agree on this matter.

    11. Re:Uh, what? by Artifakt · · Score: 4, Insightful

      I am aware 100% of the time that I exist. During the times I (allegedly) don't exist, I am not aware of them. I have never experienced something without being aware of it - the two states are synonyms.
            But, I have been aware of many things that don't indicate an external reality. My own internal thoughts and emotions don't necessarily correspond to reality, my memories may or may not be accurate to varying degrees when checked against new experiences, plus there's dreams, delusions, and many other states where I have strong doubt the things I am aware of at that time match in any way with an objective external universe.
              So, I believe in an external reality, but I simply must do so based on a lot less than 100% of my total awareness. If I thought the percentage was very small, I wouldn't believe that the rest of you are real enough to bother typing this, but if I set the percentage at or very close to 100%, I'd be assuming my dreams are real, my emotions are tools of reason, and railroad tracks really do get closer together in the distance!
              Now 'freewill' seems to be real to me, but it acts in many cases in relation to things I also can't prove are real. I can't really prove to anyone else that I have 'real' emotions instead of just 'simulating them', I can't prove I was genuinely mistaken about something instead of pretending to be mistaken, etc. So, I can't use any of these to prove I have free will, since they themselves can also be doubted.
              But, I've just shown that the idea of an external reality, and particularly one where processes of Chemistry and Physics imply there is no true free will possible, is itself subject to doubt. So the real reason we can doubt free will exists is that we can actually doubt just about everything. Now what really bugs me is you people who are swearing up and down there is no reason to doubt external reality, but doubting everything else for reasons that also apply to that external model, except you won't apply them to that, just everything else.

         

      --
      Who is John Cabal?
    12. Re:Uh, what? by im_thatoneguy · · Score: 3, Insightful

      Furthermore we still have to define free will.

      If an agent with free will is defined as an agent whose behavior is unpredictable then free will can exist. Sub-atomic particles CAN fall under that definition as having free will.

      If an agent with free will is defined as an agent who is capable of changing its state through means which are impossible to predict and NOT-RANDOM then it will be impossible to determine whether or not sub-atomic particles or people have free will.

      There is no evidence or suggestion that human decision making (moral, religious or otherwise) is anything other than the product of chemical reactions occuring in the brain. Eventually we'll be able to perfectly model the human brain and if it doesn't function then we'll be able to effectively determine that humans do not have free will and that the source of the unpredictability is chaos and happenstance not some super-natural decision making agent which transmits decisions to the meat. (Personally I would argue that alcohol and other physical decision impairing forces are proof that our brain and not some supernatural morality engine is the source of our decisions.)

      There are three methods that I know of by which something can happen:
      1) Deterministic
      2) Random
      3) Free Will

      Number 2 and 3 are effectively impossible to discriminate between so even if a sub-atomic particle is demonstrated to be unpredictable it still doesn't make it free of will. However even the word "unpredictable" has to be carefully used because the weather is unpredictable and yet most people believe it is deterministic and not the hand of say... Thor.

      Number 1 is impossible to prove as well. However counter examples where an agent can be forced into acting against its normal behavior is very strong evidence to support a definition of determinism.

      And just to head off the obligatory nihlist: I can't prove that Jesus wasn't Budha's mother or that I'm not a delusional apple hanging from a tree in Iowa so please let's apply occum's razor to this matter before blurting out some nonsense like "but you can never know FOR SURE if a sub-atomic particle is random therefore it has free will."

    13. Re:Uh, what? by im_thatoneguy · · Score: 3, Insightful

      Eventually we'll be able to perfectly model the human brain and if it doesn't function then we'll be able to effectively determine that humans do not have free will and that the source of the unpredictability is chaos and happenstance not some super-natural decision making agent which transmits decisions to the meat.

      Sorry posted too quick.

      That should read: Eventually we'll be able to perfectly model the human brain and if it doesn't fail to function then we'll be able to effectively determine that humans do not have free will and that the source of the unpredictability is chaos and happenstance not some super-natural decision making agent which transmits decisions to the meat.

  2. This is exactly what free will boils down to.. by blind+biker · · Score: 3, Insightful

    ...if you are willing (and able) to scientifically analyse what human will (free or otherwise) really is, and what are the boundaries of its freedom. If we hadn't have quantum mechanical phenomena, there would be no room for free will whatsoever, and we'd be all living a predetermined life.

    When I try to discuss this topic with my friends, they are either not scientifically minded enough to follow through, or just can't accept the fact that, as physical beings, we would be absolutely determined in our behaviour and actions. And then, there's the concept of "soul" that, so far, has only helped to muddy the waters of reasoning in this topic. I'd really like to see a way that the concept of "soul" could be included in the discussion of free will in a physical world, I just don't know of any scientifically minded philosopher who had done it.

    --
    "The agriculture ministry is not in charge of Gundam" - Japanese ministry official.
    1. Re:This is exactly what free will boils down to.. by Austerity+Empowers · · Score: 4, Insightful

      Are particles unpredictable because they have free will, or are they unpredictable because we don't have the ability to understand what drives them?

      At one point objects fell from the sky because it was God's will.

  3. Wide Interpretation of Freewill is at fault by topham · · Score: 5, Insightful

    Think about a definition of Free Will for a while. Then answer this question:

    If an exact copy of you were made (absolutely exact, right down to the quantum state of every particle); do you believe that given the exact same environment (a twinned universe?) your doppleganger would ever do anything different than yourself?

    If you believe that you would not act, and think exactly the same then you believe Free Will is beyond quantum mechanics; otherwise Free Will is just the synergistic response to a complex organism that has the capability to think of itself.

    1. Re:Wide Interpretation of Freewill is at fault by LeafOnTheWind · · Score: 5, Insightful

      Mod parent up. Finally someone who knows what they are talking about.

      The buzzword "free will" is bringing out the idiots with no science education. This discussion simplifies to one thing - if, given all the requisite variables in a system, one can predict the next infinite states of that system, that system is deterministic. Id est, if, ignoring the cloning theorem and other QM restraints, one knew the exact state of every particle in the human body and one could predict the next infinite states of that system (the body), then that system would be deterministic (have no "free will"). If, on the other hand, the human body (more precisely, the mind) could be proven to have a finite number of predictable states, then the underlying physical systems must therefore also have a finite number of predictable states (be unpredictable).

      Now, QM predicts that subatomic particles are unpredictable. Technically, that would make our minds unpredictable HOWEVER - unpredictable is defined precisely as being unable to predict an infinite number of states in the system. A finite (even large) number may still be possible. This would the generalization of a large number of unpredictable subsystems in the system used to approximate the future states. As we see with Newtonian physics, this method can be fairly accurate.

      The only way that humans could be proven to be completely predictable would be to disprove the tenets of quantum mechanics. Until then, humans have "free will."

  4. Re:Science and religions/atheism should not mix by mblase · · Score: 3, Insightful

    I am a little bit concerned, that scientists, due to their philosophical bent, might actually try ignore evidence that does not fit into the atheist viewpoints.

    Yeah, it's terrible when respectable professional scientists won't accept the possibility of unprovable supernatural beings as an axiom for their research papers.

  5. Comment removed by account_deleted · · Score: 4, Insightful

    Comment removed based on user account deletion

  6. No: Free will + statistics by Roger+W+Moore · · Score: 5, Insightful

    No - in Asimov's world humans can have free will in exactly the same manner as quantum mechanical particles can have "free will" and yet Newtonian mechanics (which is deterministic) can accurately describe the physics of things a lot larger than an atom. There is a probability for each human/particle to make different choices and, when statistically sampled on a large enough scale, those probabilities lead to something that appear deterministic.

    This is exactly how quantum mechanics work. Each particle has a probability distribution for what it will do so that, at the large scale because of the huge numbers involved we know that roughly 40% will do X, 20% will do Y and 40% will do Z.

    While I don't know for certain that Asimov based psycho-history on QM I've often suspected as much. As a PhD chemist he should have had a reasonably good understanding of QM at least.

  7. Randomness and unpredictability by pcgabe · · Score: 4, Insightful

    All things "quantum" are portrayed as bizarre, but they aren't; they aren't even that difficult to understand, if presented properly. There's just a whole lot of bad "information" out there.

    The most famous alternative is attributed to the physicist David Bohm, who argued in the 1950s that the behavior of subatomic particles is entirely determined by "hidden variables" that cannot be observed.

    Bohm's idea has never been debunked, and is perfectly logical. Remember, the movement of the planets was also once "unpredictable", and then "mostly predictable but with errors" before we understood the hidden variables. Just because something is currently unpredictable, doesn't make it random.

    Anyway.

    There are a number of statements in this article that lead me to believe that either: A) Conway and Kochen are loony, or B) crappy "science" journalism strikes again. Hopefully it's the latter and something was just lost in the translation from actual-science to journalism-ese. However, the fact that the two of them have been hawking this idea for four years tends toward A.

    Repeated throughout the article is the idea that the particle CHOOSES its spin. This is an insane idea. The whole presentation is nuts. Do subatomic particles have free will? What? Does a glass of water have free will? Can you define free will first so that a meaningful discussion can follow?

    This article portrays it as a new choice, either determinism or free will. It has always been one or the other, they're mutually exclusive (for certain values of "free will").

    But anyway.

    Entangle two particles this way, and then send a physicist named Alice with one of them to Mars and leave the other with a physicist named Bob on Earth. That will prevent information from passing between the physicists or the particles, according to relativity theory.

    WTF. Again with the lunacy. You don't have to send Alice to Mars to prevent information passing between them. First of all, information isn't going to pass between them, that's not what entangled particles are about (despite massive popular [but factually wrong] ideas to the contrary). Second of all, putting Alice on the other side of Earth gets her out of Bob's immediate light cone.

    ANYWAY.

    The point of the thought experiment is to "prove" that there's no way to predict the axis of spin of the particle, even with an identically entangled particle, if you "poke" it differently, because no perfect pre-poke state exists.

    This means that the particle cannot have a definite spin in every direction before it's measured, Kochen and Specker concluded. If it did, physicists would be able to occasionally observe it breaking the 1-0-1 rule, which never happens. Instead, it must "decide" which spin to have on the fly.

    Because "poking" it changes its spin. NO SHIT. You change the outcome by measuring it. Oh my science! Alert the media! So their idea is that the spin is not predetermined, and therefore determinism is false and we have "free will". Except it STILL doesn't disprove Bohm's conjecture (see start of rant) that there are unknown rules in play.

    So, their idea basically adds nothing to the debate. It "proves" nothing. It tells us nothing. Why is this on /.?

    This article is dumb. I'm dumber for having read it. I award the author no points, and may science have mercy on his inevitably destined animating force.

    --
    Don't put advice in your sig.
  8. Re:Science and religions/atheism should not mix by drsmithy · · Score: 3, Insightful

    He said evidence. If there is evidence of such beings (hypothetical), it would be wrong of scientists to ignore it just because they're atheist, right?

    If there is such evidence, it wouldn't be supernatural, and hence scientists' religious beliefs (or lack thereof) would be irrelevant.

  9. Re:What do we mean by FREE WILL here? by bunratty · · Score: 3, Insightful

    It's not free will if we're automata predetermined to carry out a given sequence of actions and have no power to choose otherwise. Free will is the ability to make a decision -- to choose whether to behave one way or the other.

    --
    What a fool believes, he sees, no wise man has the power to reason away.
  10. Re:Free Will != Unpredictability by fastest+fascist · · Score: 3, Insightful

    If it walks like a duck, quacks like a duck and looks like a duck, it's a duck. That "you" have an "illusion" of free will is a strange claim to make. Who is this "you" the brain is fooling into thinking it's in control? The brain is in control, although in a distributed manner. Sure, if you want to think of yourself as a dictator holding all the strings, getting information from and passing instructions to from the different facilities of your nervous system, you're going to run into all kinds of trouble because, frankly, it just isn't so. There's no differentiating the experience of self, or of free will, or of anything, really, and the brain that does the experiencing, usually experiencing any given event in a multitude of different, even conflicting ways. If you can't tell the difference between having or not having free will, why do you think there is one in the first place?

  11. Foolishness by wfolta · · Score: 3, Insightful

    Yeah, it's terrible when respectable professional scientists won't accept the possibility of unprovable supernatural beings as an axiom for their research papers.

    Only evangelizing atheists and certain 17th-century clerics think that a scientist who believes in a supreme being will somehow have to resort to "angels pushing planets" kind of proof.

    Newton, Bayes, and many other famous scientists were believers and that did not stop them from applying scientific methods. And many never-heard-of-them scientists today also believe as well, but you'll see no footnotes in their papers referencing this.

    You make the basic mistake of assuming that those who stand inside of mainstream science and don't have Bible-referencing footnotes, have no faith. Not very scientific or rigorous. (Or correct.)