Question: What is free will?
Steven Pinker: I don’t believe there’s such a thing as free will in the sense of a ghost and a machine, a spirit or a soul that somehow reads the TV screen of the senses and pushes buttons and pulls the levers of behavior. There’s no sense that we can make of that. I think we are . . . Our behavior is the product of physical processes in the brain. On the other hand, when you have a brain that consists of one hundred billion neurons connected by one hundred trillion synopses, there is a vast amount of complexity. That means that human choices will not be predictable in any simple way from the stimuli that I’ve hinged on beforehand. We also know that that brain is set up so that there are at least two kinds of behavior. There’s what happens when I shine a light in your eye and your iris contracts, or I hit your knee with a hammer and your leg jerks upward. We also know that there’s a part of the brain that does things like choose what to have for dinner; whether to order chocolate or vanilla ice cream; how to move the next chess people; whether to pick up the paper or put it down. That is very different from your iris closing when I shine a light in your eye. It’s that second kind of behavior – one that engages vast amounts of the brain, particularly the frontal lobes, that incorporates an enormous amount of information in the causation of the behavior that has some mental model of the world that can predict the consequences of possible behavior and select them on the basis of those consequences. All of those things carve out the realm of behavior that we call free will, which is useful to distinguish from brute involuntary reflexes, but which doesn’t necessarily have to involve some mysterious soul.
Recorded On: 6/13/07
Discuss
Karin Frank on January 16, 2008, 2:39 PM
Does this imply that it is morally objectionable to punish criminals for being victims of their genetics, upbringing, and society?
Karin Frank on January 16, 2008, 7:39 PM
Does this imply that it is morally objectionable to punish criminals for being victims of their genetics, upbringing, and society?
Gnos Grajab on January 18, 2008, 6:49 PM
Karin,
The objective of punishment for behaviors deemed criminal is to prevent them. Taking consideration of one%u2019s genetics, upbringing, or the society itself is not immoral or unjust, independent of ones view on free will. Whether one is responsible for the criminal act or not, the society is responsible for protecting its members and must act in accordance with that responsibility. If knowledge of a criminal%u2019s genetics, upbringing, or relationship to the society helps the society perform its obligations, then consideration should be given. While one may argue that punishment, as a form of retaliation or vengeance, is immoral if we have no free will and are not responsible for our actions, this type of punishment differs from that which a society should involve itself.
There are two aspects of most systems of criminal deterrence; determining guilt, and sentencing. A person%u2019s guilt should be determined independent of factors like genetics, upbringing and the like, but once an individual is deemed guilty the sentencing must be made in the best interest of the society and the individual, with the society given precedence. Sentencing usually involves some sort of punishment, and in determining what type of punishment would best serve the society and the individual, all factors that led to the commission of the crime should be considered.
Gnos Grajab on January 18, 2008, 11:49 PM
Karin,
The objective of punishment for behaviors deemed criminal is to prevent them. Taking consideration of one%u2019s genetics, upbringing, or the society itself is not immoral or unjust, independent of ones view on free will. Whether one is responsible for the criminal act or not, the society is responsible for protecting its members and must act in accordance with that responsibility. If knowledge of a criminal%u2019s genetics, upbringing, or relationship to the society helps the society perform its obligations, then consideration should be given. While one may argue that punishment, as a form of retaliation or vengeance, is immoral if we have no free will and are not responsible for our actions, this type of punishment differs from that which a society should involve itself.
There are two aspects of most systems of criminal deterrence; determining guilt, and sentencing. A person%u2019s guilt should be determined independent of factors like genetics, upbringing and the like, but once an individual is deemed guilty the sentencing must be made in the best interest of the society and the individual, with the society given precedence. Sentencing usually involves some sort of punishment, and in determining what type of punishment would best serve the society and the individual, all factors that led to the commission of the crime should be considered.
Gnos Grajab on January 19, 2008, 10:48 AM
I contend that the question of whether we have free will or not is irrelevant. This is based on the assertion that even if we have no free will and all our actions are set in stone and predetermined, it is of no consequence unless we are able to know what those future actions are, and our future actions can not be fully determined. Mr. Pinker implies that our actions are not determinable, but the justification is that we are too complex. This may be the case, but only implies that we can not now determine our future actions, but does little to demonstrate that future actions are, in fact non-determinable. If a hyper-advanced alien race came here, would we be too complex for them do determine our actions? A stronger demonstration of the non-determinability of future actions can be found in Alan Turing's proof on non-determinability (http://en.wikipedia.org/wiki/Turing's_proof). I will not go too much into it here, but one of the key features of his proof is that even in a deterministic system (which we would have to be if we had no free will) not all solutions are determinable if the mechanism that is doing the examining is part of the same system that is being examined. The problem is introspection.
What social science (in fact all science) assumes is that the universe is deterministic. But since Turing (and others) have demonstrated that being deterministic is not sufficient for determinability when the determiner is part of what is being determined it is invalid to assert that the future is fully predictable from within the universe, even in a fully deterministic universe. (say that three times fast) If being part of a deterministic system does not imply our actions are determinable, then there is no meaningful difference between having or not having free will.
Gnos Grajab on January 19, 2008, 3:48 PM
I contend that the question of whether we have free will or not is irrelevant. This is based on the assertion that even if we have no free will and all our actions are set in stone and predetermined, it is of no consequence unless we are able to know what those future actions are, and our future actions can not be fully determined. Mr. Pinker implies that our actions are not determinable, but the justification is that we are too complex. This may be the case, but only implies that we can not now determine our future actions, but does little to demonstrate that future actions are, in fact non-determinable. If a hyper-advanced alien race came here, would we be too complex for them do determine our actions? A stronger demonstration of the non-determinability of future actions can be found in Alan Turing’s proof on non-determinability (http://en.wikipedia.org/wiki/Turing’s_proof). I will not go too much into it here, but one of the key features of his proof is that even in a deterministic system (which we would have to be if we had no free will) not all solutions are determinable if the mechanism that is doing the examining is part of the same system that is being examined. The problem is introspection.What social science (in fact all science) assumes is that the universe is deterministic. But since Turing (and others) have demonstrated that being deterministic is not sufficient for determinability when the determiner is part of what is being determined it is invalid to assert that the future is fully predictable from within the universe, even in a fully deterministic universe. (say that three times fast) If being part of a deterministic system does not imply our actions are determinable, then there is no meaningful difference between having or not having free will.
Jan C on January 20, 2008, 3:35 PM
I think, if I've understood correctly that my free will is made up of many variables and not by some etherial entity. In that I am constantly being exposed to new things and my brain is doing what it should (:-)) then the old and new would be rearranging and adapting and the outcome – not at all easily predictable.
Jan C on January 20, 2008, 8:35 PM
I think, if I’ve understood correctly that my free will is made up of many variables and not by some etherial entity. In that I am constantly being exposed to new things and my brain is doing what it should (:-)) then the old and new would be rearranging and adapting and the outcome – not at all easily predictable.
A Co on January 21, 2008, 6:52 PM
If you don't have free will and your brain makes all your choices for you, then shouldn't each choice be easy to make. How do you account for hard choices? Also, if we don't have free will, why do we feel like we do. I can't think of any logical reason for the brain to develop so that it makes an illusion that you are making choices.
A Co on January 21, 2008, 11:52 PM
If you don’t have free will and your brain makes all your choices for you, then shouldn’t each choice be easy to make. How do you account for hard choices? Also, if we don’t have free will, why do we feel like we do. I can’t think of any logical reason for the brain to develop so that it makes an illusion that you are making choices.
bruce maloney on January 25, 2008, 8:40 AM
Pinker is essentially describing 'Determinism', a philosophy Einstein also subscribed too. Not Fatalism, many people confuse the two.
bruce maloney on January 25, 2008, 1:40 PM
Pinker is essentially describing ‘Determinism’, a philosophy Einstein also subscribed too. Not Fatalism, many people confuse the two.
Jordon Roy Gowans on February 1, 2008, 11:52 AM
Everyone should read Pinker's best book, The Blank Slate. It is to human minds what Jared Diamond's Guns, Germs and Steel is to human societies. Actually, read both these books. Our world is accelerating and a lot of people are getting left behind.
Jordon Roy Gowans on February 1, 2008, 4:52 PM
Everyone should read Pinker’s best book, The Blank Slate. It is to human minds what Jared Diamond’s Guns, Germs and Steel is to human societies. Actually, read both these books. Our world is accelerating and a lot of people are getting left behind.
SHOAIB KHAN on March 31, 2008, 11:26 AM
In my opinion there is no such thing as a FREE WILL. We have already made a choice long before we start thinking about it and start giving ourselves reasons as to why we made that particular choice. Depending on individual human nature, and the amount of knowledge and experience ( the amount of pain or pleasure which is associated with the result of every choice we make )that has been accumulated the justifications we give ourselves for making a choice are constantly revised. Irrationality remains part of that decision making process ( when too many drives are competing to come to the fore and none succeeds our intellect plays the CHANCE DICE ).
SHOAIB KHAN on March 31, 2008, 3:26 PM
In my opinion there is no such thing as a FREE WILL. We have already made a choice long before we start thinking about it and start giving ourselves reasons as to why we made that particular choice. Depending on individual human nature, and the amount of knowledge and experience ( the amount of pain or pleasure which is associated with the result of every choice we make )that has been accumulated the justifications we give ourselves for making a choice are constantly revised. Irrationality remains part of that decision making process ( when too many drives are competing to come to the fore and none succeeds our intellect plays the CHANCE DICE ).
Jim Stiene on April 24, 2009, 8:14 PM
There are at least a thousand trillion synapses, not a hundred trillion. As for no metaphysical reality in the brain or mind, there was a study once where something like 1000 people prayed for a number of patients, say 100, while 100 weren’t prayed for, as a control. Though they both died at the same rate, the first group were more comfortable, and needed less pain medication.
Suggesting even thought can effect something outside itself. As an agnostic, I enjoy looking into things we can’t easily explain, as life would be boring with no mysteries.
Plus dying with the thought it is not necessarily final, is comforting. Which may very well be the biggest motivation for religion. A denial of our mortality. But what are ouija boards, ghosts, any number of metaphysical reports by the thousands over time?
Another dimension would explain a lot. UFOs simply shift between dimmensions. Ghosts are something bridging them as well as fairies, lepracauns, angels, demons or anything else we can’t explain.
So even the metaphysical could have a scientific basis, but I would just assume not right off the spiritual explanation being that life and the big bang are as unclear in their causality as intelligent design. Our existence is an inexplicable chicken vs egg scenario wether you look at it with a telescope or sacred text. All we know is that we are here. Why is a trickier question.
Consider a universe with neither space nor time, and you see the absurdity of it. Nothing preceeds it with no space to change. So we have energy existing outside space time, expanding without any reason? Life is an absurdity, and science isn’t helping. It only makes it more puzzling.
Lee Bob Black on August 18, 2009, 10:22 AM
Steven Pinker and and George Church on a NOVA scienceNOW segment, Public Genomes; http://www.pbs.org/wgbh/nova/sciencenow/0406/01.html
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