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Physicist Unveils a 'Turing Test' For Free Will

KentuckyFC writes "The problem of free will is one of the great unsolved puzzles in science, not to mention philosophy, theology, jurisprudence and so on. The basic question is whether we are able to make decisions for ourselves or whether the outcomes are predetermined and the notion of choice is merely an illusion. Now a leading theoretical physicist has outlined a 'Turing Test' for free will and says that while simple devices such as thermostats cannot pass, more complex ones like iPhones might. The test is based on an extension of Turing's halting problem in computer science. This states that there is no general way of knowing how an algorithm will finish, other than to run it. This means that when a human has to make a decision, there is no way of knowing in advance how it will end up. In other words, the familiar feeling of not knowing the final decision until it is thought through is a necessary feature of the decision-making process and why we have the impression of free will. This leads to a simple set of questions that forms a kind of Turing test for free will. These show how simple decision-making devices such as thermostats cannot believe they have free will while humans can. A more interesting question relates to decision-makers of intermediate complexity, such as a smartphone. As the author puts it, this 'seems to possess all the criteria required for free will, and behaves as if it has it.'"

4 of 401 comments (clear)

  1. My phone has free will by SeanTobin · · Score: 5, Funny

    My smartphone definitely has free will. I can not predict when it will reboot on its own, when it will freeze on a screen or when it will lie to me about notifications. I think it not only has free will, but is also a sociopath!

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  2. Re:Hmm by xevioso · · Score: 5, Funny

    My thermostat believes it's Napoleon, and whenever I wander by it on the way to the restroom at night, it always bugs me about how we should be invading Russia and to please make sure I never ship him off to Elba or some such nonsense.

  3. Re:Siri doesn't have free will by OakDragon · · Score: 5, Funny

    If it turns out we don't have free will, I plan to go nuts and just do whatever I want!

  4. Re:Siri doesn't have free will by pspahn · · Score: 5, Funny

    And in the same sense, does a married man have free will? At first it might appear so, but upon further investigation it is clear that he does not.

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