Free will
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For other uses, see Free will (disambiguation).
The question of free will is whether, and in what sense, rational agents exercise control
over their actions and decisions. Addressing this question requires understanding the
relationship between freedom and cause, and determining whether the laws of nature
are causally deterministic. The various philosophical positions taken differ on
whether all events are determined or not — determinism versus indeterminism — and also on
whether freedom can coexist with determinism or not — compatibilism versus incompatibilism.
So, for instance, 'hard determinists' argue that the universe is deterministic, and that this
makes free will impossible. The principle of free will has religious, ethical, and scientific implications.
For example, in the religious realm, free will may imply that an omnipotent divinity does not
assert its power over individual will and choices. In ethics, it may imply that individuals can be held
morally accountable for their actions. In the scientific realm, it may imply that the actions of
the body, including the brain and the mind, are not wholly determined by physical causality.
The question of free will has been a central issue since the beginning of philosophical thought.
Contents
* 1 In Western philosophy
o 1.1 Determinism
o 1.2 Compatibilism
o 1.3 Incompatibilism
o 1.4 Libertarian incompatibilism
o 1.5 Other views
* 2 Moral responsibility
* 3 In science
o 3.1 Physics
o 3.2 Genetics
o 3.3 Neuroscience
o 3.4 Neurology and psychiatry
o 3.5 Determinism and emergent behaviour
o 3.6 Experimental psychology
* 4 In Eastern philosophy
o 4.1 In Hindu philosophy
o 4.2 In Buddhist philosophy
o 4.3 In Kashmir Shaivism
* 5 In other theology
* 6 See also
* 7 References
* 8 Further reading
* 9 External links
In Western philosophy
A simplified taxonomy of the most important philosophical positions
regarding free will.
The basic philosophical positions on the problem of free will can be divided in
accordance with the answers they provide to two questions:
1. Is determinism true? and
2. Does free will exist?
Determinism is roughly defined as the view that all current and future events are
causally necessitated by past events combined with the laws of nature. Neither determinism
nor its opposite, non-determinism, are positions in the debate about free will.[1]
Compatibilism is the view that the existence of free will and the truth of determinism are
compatible with each other; this is opposed to incompatibilism which is the view that
there is no way to reconcile a belief in a deterministic universe with a belief in free will.
[2] Hard determinism is the version of incompatibilism that accepts the truth of
determinism and rejects the idea that humans have any free will.[3] Metaphysical
libertarianism topically agrees with hard determinism only in rejecting compatibilism.
Because libertarians accept the existence of free will, they must reject determinism
and argue for some version of indeterminism that is compatible with freedom.[4]
Determinism
Main article: Determinism
Determinism is a broad term with a variety of meanings. Corresponding to each of these
different meanings, there arises a different problem of free will.[5]
Causal (or nomological) determinism is the thesis that future events are necessitated
by past and present events combined with the laws of nature. Such determinism is sometimes
illustrated by the thought experiment of Laplace's demon. Imagine an entity that knows all facts
about the past and the present, and knows all natural laws that govern the universe. Such an
entity may be able to use this knowledge to foresee the future, down to the smallest detail.[6]
Logical determinism is the notion that all propositions, whether about the past, present or future,
are either true or false. The problem of free will, in this context, is the problem of how choices can
be free, given that what one does in the future is already determined as true or false in the present.[5]
Theological determinism is the thesis that there is a God who determines all that humans will do,
either by knowing their actions in advance, via some form of omniscience[7] or by decreeing their
actions in advance.[8] The problem of free will, in this context, is the problem of how our actions
can be free, if there is a being who has determined them for us ahead of time.
Biological determinism is the idea that all behavior, belief, and desire are fixed by our genetic
endowment. There are other theses on determinism, including cultural determinism and
psychological determinism.[5] Combinations and syntheses of determinist theses, e.g.
bio-environmental determinism, are even more common.
Compatibilism
Main article: Compatibilism and incompatibilism
Thomas Hobbes was a classical compatibilist.
Compatibilists maintain that determinism is compatible with free will. A common strategy employed by
"classical compatibilists", such as Thomas Hobbes, is to claim that a person acts freely only when the
person willed the act and the person could have done otherwise, if the person had decided to.
Hobbes sometimes attributes such compatibilist freedom to the person and not to some
abstract notion of will, asserting, for example, that "no liberty can be inferred to the will,
desire, or inclination, but the liberty of the man; which consisteth in this, that he finds no stop,
in doing what he has the will, desire, or inclination to doe."[9] In articulating this crucial proviso,
David Hume writes, "this hypothetical liberty is universally allowed to belong to every one who
is not a prisoner and in chains".[10] To illustrate their position, compatibilists point to clear-cut
cases of someone's free will being denied, through rape, murder, theft, or other forms of
constraint. In these cases, free will is lacking not because the past is causally determining
the future, but because the aggressor is overriding the victim's desires and preferences
about his own actions. The aggressor is coercing the victim and, according to compatibilists,
this is what overrides free will. Thus, they argue that determinism does not matter;
what matters is that individuals' choices are the results of their own desires and preferences,
and are not overridden by some external (or internal) force.[9][10] To be a compatibilist,
one need not endorse any particular conception of free will, but only deny that determinism
is at odds with free will.[1]
William James' views were ambivalent. While he believed in free will on "ethical grounds,"
he did not believe that there was evidence for it on scientific grounds, nor did his own
introspections support it.[11] Moreover, he did not accept incompatibilism as formulated
below; he did not believe that the indeterminism of human actions was a prerequisite of moral
responsibility. In his work Pragmatism, he wrote that "instinct and utility between them can safely
be trusted to carry on the social business of punishment and praise" regardless of metaphysical
theories.[12] He did believe that indeterminism is important as a "doctrine of relief"—it allows
for the view that, although the world may be in many respects a bad place, it may, through
individuals' actions, become a better one. Determinism, he argued, undermines meliorism—
the idea that progress is a real concept leading to improvement in the world.
"Modern compatibilists", such as Harry Frankfurt and Daniel Dennett, argue that there are
cases where a coerced agent's choices are still free because such coercion coincides with
the agent's personal intentions and desires.[13][14] Frankfurt, in particular, argues for a
version of compatibilism called the "hierarchical mesh". The idea is that an individual can
have conflicting desires at a first-order level and also have a desire about the various first-
order desires (a second-order desire) to the effect that one of the desires prevails over the
others. A person's will is to be identified with her effective first-order desire, i.e., the one that
she acts on. So, for example, there are "wanton addicts", "unwilling addicts" and "willing addicts."
All three groups may have the conflicting first-order desires to want to take the drug to which they
are addicted and to not want to take it.
The first group, "wanton addicts", have no second-order desire not to take the drug.
The second group, "unwilling addicts", have a second-order desire not to take the drug,
while the third group, "willing addicts", have a second-order desire to take it. According to
Frankfurt, the members of the first group are to be considered devoid of will and therefore no
longer persons. The members of the second group freely desire not to take the drug, but their
will is overcome by the addiction. Finally, the members of the third group willingly take the drug
to which they are addicted. Frankfurt's theory can ramify to any number of levels. Critics of the
theory point out that there is no certainty that conflicts will not arise even at the higher-order
levels of desire and preference.[15] Others argue that Frankfurt offers no adequate explanation
of how the various levels in the hierarchy mesh together.[16]
In Elbow Room, Dennett presents an argument for a compatibilist theory of free will, which he
further elaborated in the book Freedom Evolves.[17] The basic reasoning is that, if one excludes
God, an infinitely powerful demon, and other such possibilities, then because of chaos and
epistemic limits on the precision of our knowledge of the current state of the world, the future
is ill-defined for all finite beings. The only well-defined things are "expectations". The ability to
do "otherwise" only makes sense when dealing with these expectations, and not with some
unknown and unknowable future.
According to Dennett, because individuals have the ability to act differently from what anyone
expects, free will can exist.[17] Incompatibilists claim the problem with this idea is that we
may be mere "automata responding in predictable ways to stimuli in our environment". Therefore,
all of our actions are controlled by forces outside ourselves, or by random chance.[18] More
sophisticated analyses of compatibilist free will have been offered, as have other critiques.[1]
Incompatibilism
Baron d'Holbach was a hard determinist.
"Hard determinists", such as d'Holbach, are those incompatibilists who accept determinism
and reject free will. "Metaphysical libertarians", such as Thomas Reid, Peter van Inwagen,
and Robert Kane, are those incompatibilists who accept free will and deny determinism,
holding the view that some form of indeterminism is true.[19] Another view is that of hard
incompatibilism which states that free will is incompatible with both determinism and
indeterminism. This view is defended by Derk Pereboom.[20]
One of the traditional arguments for incompatibilism is based on an "intuition pump":
if a person is determined in his or her choices of actions, then he or she must be like
other mechanical things that are determined in their behavior such as a wind-up toy,
a billiard ball, a puppet, or a robot. Because these things have no free will, then people
must have no free will, if determinism is true.[21][19] This argument has been rejected
by compatibilists such as Daniel Dennett on the grounds that, even if humans have
something in common with these things, it does not follow that there are no important
differences.[14]
Another argument for incompatibilism is that of the "causal chain." Incompatibilism is key
to the idealist theory of free will. Most incompatibilists reject the idea that freedom of action
consists simply in "voluntary" behavior. They insist, rather, that free will means that man must
be the "ultimate" or "originating" cause of his actions. He must be a causa sui, in the traditional
phrase. To be responsible for one's choices is to be the first cause of those choices, where
first cause means that there is no antecedent cause of that cause. The argument, then, is
that if man has free will, then man is the ultimate cause of his actions. If determinism is true,
then all of man's choices are caused by events and facts outside his control. So, if everything
man does is caused by events and facts outside his control, then he cannot be the ultimate
cause of his actions. Therefore, he cannot have free will.[22][23][24] This argument has also
been challenged by various compatibilist philosophers.[25][26]
A third argument for incompatibilism was formulated by Carl Ginet in the 1960s and has
received much attention in the modern literature. The simplified argument runs along these
lines: if determinism is true, then we have no control over the events of the past that
determined our present state and no control over the laws of nature. Since we can
have no control over these matters, we also can have no control over the consequences
of them. Since our present choices and acts, under determinism, are the necessary consequences
of the past and the laws of nature, then we have no control over them and, hence, no free will.
This is called the consequence argument.[27][28] Peter van Inwagen remarks that C.D.
Broad had a version of the consequence argument as early as the 1930s.[29]
The difficulty of this argument for compatibilists lies in the fact that it entails the impossibility
that one could have chosen other than one has. For example, if Jane is a compatibilist and she
has just sat down on the sofa, then she is committed to the claim that she could have remained
standing, if she had so desired. But it follows from the consequence argument that, if Jane had
remained standing, she would have either generated a contradiction, violated the laws of nature
or changed the past. Hence, compatibilists are committed to the existence of "incredible abilities",
according to Ginet and van Inwagen. One response to this argument is that it equivocates on the
notions of abilities and necessities, or that the free will evoked to make any given choice is really
an illusion and the choice had been made all along, oblivious to its "decider".[28] David Lewis
suggests that compatibilists are only committed to the ability to do something otherwise if
different circumstances had actually obtained in the past.[30]
Libertarian incompatibilism
Main article: Libertarianism (metaphysics)
The other view under the heading of incompatiblism is metaphysical libertarianism.
Libertarianism holds that free-will exists, which entails that the individual is able to take
more than one possible course of actions under a given set of circumstances. Since
determinism implies that there is only one possible future, it is not compatible with this
conception of free-will, and must be false.
Accounts of libertarianism subdivide into supernatural theories and scientific or naturalistic
theories. Supernatural theories hold that a non-physical mind or soul overrides physical
causality, so that physical events in the brain that lead to the performance of actions do
not have an entirely physical explanation. This approach is allied to mind-body dualism,
and sometimes has a theological motivation.
Scientific explanations of libertarianism (described as "naturalistic") sometimes involve
invoking panpsychism, the theory that a quality of mind is associated with all particles,
and pervades the entire universe, in both sentient and non-sentient entities.[31]. Other
naturalistic approaches do not require free will to be a fundamental constituent of the
universe; ordinary randomness is appealed to as supplying the "elbow room" believed to
be necessary by libertarians. Free volition is regarded as a particular kind of complex,
high-level process with an element of indeterminism. An example of this kind of approach
has been developed by Robert Kane.
Other views
Much of Arthur Schopenhauer's writing is focused on the notion of will and its relation to
freedom.
Some philosophers' views are difficult to categorize as either compatibilist or incompatibilist,
hard determinist or libertarian. John Locke, for example, denied that the phrase "free will" made
any sense (compare with theological noncognitivism, a similar stance on the existence of God).
He also took the view that the truth of determinism was irrelevant. He believed that the defining
feature of voluntary behavior was that individuals have the ability to postpone a decision long
enough to reflect or deliberate upon the consequences of a choice: "...the will in truth, signifies
nothing but a power, or ability, to prefer or choose".[32] Similarly, David Hume discussed the
possibility that the entire debate about free will is nothing more than a merely "verbal" issue.
He also suggested that it might be accounted for by "a false sensation or seeming experience"
(a velleity) which is associated with many of our actions when we perform them. On reflection,
we realize that they were necessary and determined all along.[33]
Arthur Schopenhauer put the puzzle of free will and moral responsibility in these terms:
Everyone believes himself a priori to be perfectly free, even in his individual actions, and thinks
that at every moment he can commence another manner of life. ... But a posteriori, through
experience, he finds to his astonishment that he is not free, but subjected to necessity,
that in spite of all his resolutions and reflections he does not change his conduct, and
that from the beginning of his life to the end of it, he must carry out the very character
which he himself condemns...."[34]
In his On the Freedom of the Will, Schopenhauer stated, "You can do what you will, but in
any given moment of your life you can will only one definite thing and absolutely nothing
other than that one thing."[35]
Rudolf Steiner, who collaborated in a complete edition of Arthur Schopenhauer's work[36],
wrote The Philosophy of Freedom, which focuses on the problem of free will. Steiner (1861–1925)
initially divides this into the two aspects of freedom: freedom of thought and freedom of
action. He argues that inner freedom is achieved when we bridge the gap between our
sensory impressions, which reflect the outer appearance of the world, and our thoughts,
which give us access to the inner nature of the world. Outer freedom is attained by
permeating our deeds with moral imagination. Steiner aims to show that these two
aspects of inner and outer freedom are integral to one another, and that true freedom is
only achieved when they are united.[37]
The contemporary philosopher Galen Strawson agrees with Locke that the truth or falsity
of determinism is irrelevant to the problem.[4] He argues that the notion of free will leads
to an infinite regress and is therefore senseless. According to Strawson, if one is responsible
for what one does in a given situation, then one must be responsible for the way one is in certain
mental respects. But it is impossible for one to be responsible for the way one is in any respect.
This is because in order to be responsible for the way one is in some situation "S", one must have been
responsible for the way one was at "S-1". In order to be responsible for the way one was at "S-1",
one must have been responsible for the way one was at "S-2", and so on. At some point in the chain,
there must have been an act of origination of a new causal chain. But this is impossible. Man cannot
create himself or his mental states ex nihilo. This argument entails that free will itself is absurd, but not
that it is incompatible with determinism. Strawson calls his own view "pessimism" but it can be
classified as hard incompatibilism.[4]
Ted Honderich holds the view that "determinism is true, compatibilism and incompatibilism
are both false" and the real problem lies elsewhere. Honderich maintains that determinism
is true because quantum phenomena are not events or things that can be located in space
and time, but are abstract entities. Further, even if they were micro-level events, they do not
seem to have any relevance to how the world is at the macroscopic level. He maintains that
incompatibilism is false because, even if determinism is true, incompatibilists have not, and
cannot, provide an adequate account of origination. He rejects compatibilism because it,
like incompatibilism, assumes a single, fundamental notion of freedom. There are really two
notions of freedom: voluntary action and origination. Both notions are needed in order to explain
freedom of will and responsibility. Both determinism and indeterminism are threats to such freedom.
To abandon these notions of freedom would be to abandon moral responsibility. On the one side,
we have our intuitions; on the other, the scientific facts. The "new" problem is how to resolve this
conflict.[38]
Moral responsibility
Society generally holds people responsible for their actions, and will say that they deserve
praise or blame for what they do. However, many believe that moral responsibility requires
free will. Thus, another important issue in the debate on free will is whether individuals are
ever morally responsible for their actions—and, if so, in what sense.
Incompatibilists tend to think that determinism is at odds with moral responsibility. It seems
impossible that one can hold someone responsible for an action that could be predicted
from (potentially) the beginning of time. Hard determinists say "So much the worse for free will!"
and discard the concept.[39] Clarence Darrow, the famous defense attorney, pleaded the
innocence of his clients, Leopold and Loeb, by invoking such a notion of hard determinism.
[40] During his summation, he declared:
What has this boy to do with it? He was not his own father; he was not his own mother;
he was not his own grandparents. All of this was handed to him. He did not surround himself
with governesses and wealth. He did not make himself. And yet he is to be compelled to pay.[40]
Conversely, libertarians say "So much the worse for determinism!"[39] Daniel Dennett asks
why anyone would care about whether someone had the property of responsibility and
speculates that the idea of moral responsibility may be "a purely metaphysical hankering"
.[14] Jean-Paul Sartre argues that people sometimes avoid incrimination and responsibility
by hiding behind determinism: "... we are always ready to take refuge in a belief in determinism
if this freedom weighs upon us or if we need an excuse".[41] However, the position that
classifying such people as "base" or "dishonest" makes no difference to whether or not
their actions are determined is quite as tenable.
The issue of moral responsibility is at the heart of the dispute between hard determinists
and compatibilists. Hard determinists are forced to accept that individuals often have "free will"
in the compatibilist sense, but they deny that this sense of free will can ground moral responsibility.
The fact that an agent's choices are unforced, hard determinists claim, does not change the fact
that determinism robs the agent of responsibility.
Compatibilists argue, on the contrary, that determinism is a prerequisite for moral responsibility.
Society cannot hold someone responsible unless his actions were determined by something.
This argument can be traced back to David Hume. If indeterminism is true, then those events
that are not determined are random. It is doubtful that one can praise or blame someone for
performing an action generated spontaneously by his nervous system. Instead, one needs to
show how the action stemmed from the person's desires and preferences—the person's character
—before one can hold the person morally responsible.[10] Libertarians may reply that undetermined
actions are not random at all, and that they result from a substantive will whose decisions are
undetermined. This argument is considered unsatisfactory by compatibilists, for it just pushes
the problem back a step. It also seems to involve some mysterious metaphysics, as well as the
concept of ex nihilo nihil fit. Libertarians have responded by trying to clarify how undetermined
will could be tied to robust agency.[42]
St. Paul, in his Epistle to the Romans addresses the question of moral responsibility as follows:
"Hath not the potter power over the clay, of the same lump to make one vessel unto honour,
and another unto dishonour?"[43] In this view, individuals can still be dishonoured for their acts
even though those acts were ultimately completely determined by God.
A similar view has it that individual moral culpability lies in individual character. That is, a person
with the character of a murderer has no choice other than to murder, but can still be punished
because it is right to punish those of bad character. How one's character was determined is
irrelevant from this perspective. Hence, Robert Cummins and others argue that people should
not be judged for their individual actions, but rather for how those actions "reflect on their
character". If character (however defined) is the dominant causal factor in determining one's
choices, and one's choices are morally wrong, then one should be held accountable for those
One exception to the assumption that moral culpability lies in either individual character or freely
willed acts is in cases where the insanity defense—or its corollary, diminished responsibility—
can be used to argue that the guilty deed was not the product of a guilty mind.[46] In such
cases, the legal systems of most Western societies assume that the person is in some way
not at fault, because his actions were a consequence of abnormal brain function.
Joshua Greene and Jonathan Cohen, researchers in the emerging field of neuroethics, argue,
on the basis of such cases, that our current notion of moral responsibility is founded on
libertarian (and dualist) intuitions.[47] They argue that cognitive neuroscience research
is undermining these intuitions by showing that the brain is responsible for our actions,
not only in cases of florid psychosis, but even in less obvious situations. For example,
damage to the frontal lobe reduces the ability to weigh uncertain risks and make prudent
decisions, and therefore leads to an increased likelihood that someone will commit a violent
crime.[48] This is true not only of patients with damage to the frontal lobe due to accident
or stroke, but also of adolescents, who show reduced frontal lobe activity compared to adults
,[49] and even of children who are chronically neglected or mistreated.[50] In each case, the
guilty party can be said to have less responsibility for his actions.[47] Greene and Cohen
predict that, as such examples become more common and well known, jurors’ interpretations
of free will and moral responsibility will move away from the intuitive libertarian notion which
currently underpins them.
Greene and Cohen also argue that the legal system does not require this libertarian interpretation.
Rather, they suggest that only retributive notions of justice, in which the goal of the legal system is
to punish people for misdeeds, require the libertarian intuition. Consequentialist approaches to
justice, which are aimed at promoting future welfare rather than meting out just deserts, can
survive even a hard determinist interpretation of free will. Accordingly, the legal system and notions
of justice can thus be maintained even in the face of emerging neuroscientific evidence undermining
libertarian intuitions of free will.
In science
Many, but not all, arguments for or against free will make an assumption about the truth
or falsehood of determinism. The scientific method holds out the promise of being able to
turn such assumptions into fact. However, such facts would still need to be combined with
philosophical considerations in order to amount to an argument for or against free will.
For instance, if compatibilism is true, the truth of determinism would have no effect on the
question of the existence of free will. On the other hand, a proof of determinism in conjunction
with an argument for incompatibilism would add up to an argument against free will.
[edit] Physics
Early scientific thought often portrayed the universe as deterministic,[51] and some
thinkers claimed that the simple process of gathering sufficient information would allow
them to predict future events with perfect accuracy. Modern science, on the other hand,
is a mixture of deterministic and stochastic theories.[52] Quantum mechanics predicts
events only in terms of probabilities, casting doubt on whether the universe is deterministic
at all. Current physical theories can not resolve the question, whether determinism is true
of the world, being very far from a potential Final Theory, and open to many different
interpretations.[53][54]
Assuming that an indeterministic interpretation of quantum mechanics turns out to be the
right one, one may still object that such indeterminism is confined to microscopic phenomena.
[55] However, many macrosophic phenomena are based on quantum effects, for instance,
some hardware random number generators work by amplifying quantum effects into practically
usable signals. A more significant question is whether the indeterminism of quantum mechanics
allows for anything like free will, when the laws of quantum mechanics are supposed to give a
complete probabilistic account of the motion of particles.[56]
There is also a further, more philosophical, objection. It has been argued that if an action is
taken due to quantum randomness, this in itself means that free will is absent, since such
action cannot be controllable by someone claiming to possess such free will.[57] If this
argument is conjoined with incompatibilism, then it would follow that free will is impossible,
since it would be incompatible with both determinism and indeterminism, and these are the
only options. If it is conjoined with compatibilism, on the other hand, it would mean that free
will is only possible in a deterministic universe.
Robert Kane has capitalized on the success of quantum mechanics and chaos theory in order to
defend incompatibilist freedom in his The Significance of Free Will and other writings.[58]
Genetics
Like physicists, biologists have frequently addressed questions related to free will. One of
the most heated debates in biology is that of "nature versus nurture", concerning the relative
importance of genetics and biology as compared to culture and environment in human behavior.
[59] The view of most researchers is that many human behaviors can be explained in terms of
humans' brains, genes, and evolutionary histories.[60][61][62] This point of view raises the fear
that such attribution makes it impossible to hold others responsible for their actions. Steven
Pinker's view is that fear of determinism in the context of "genetics" and "evolution" is a mistake,
that it is "a confusion of explanation with exculpation". Responsibility doesn't require behavior to
be uncaused, as long as behaviour responds to praise and blame.[63] Moreover, it is not certain
that environmental determination is any less threatening to free will than genetic determination.[64]
Neuroscience
Typical recording of the readiness potential. Libet investigated whether this neural activity
corresponded to the "felt intention" (or will) to move of experimental subjects.
It has become possible to study the living brain, and researchers can now watch the brain's
decision-making "machinery" at work. A seminal experiment in this field was conducted by
Benjamin Libet in the 1980s, in which he asked each subject to choose a random moment
to flick her wrist while he measured the associated activity in her brain (in particular, the
build-up of electrical signal called the readiness potential). Although it was well known that
the readiness potential preceded the physical action, Libet asked whether the readiness
potential corresponded to the felt intention to move. To determine when the subject felt the
intention to move, he asked her to watch the second hand of a clock and report its position
when she felt that she had the conscious will to move.[65]
Libet found that the unconscious brain activity leading up to the conscious decision by the
subject to flick his or her wrist began approximately half a second before the subject consciously
felt that she had decided to move.[65][66] Libet's findings suggest that decisions made by a
subject are first being made on a subconscious level and only afterward being translated into a "
conscious decision", and that the subject's belief that it occurred at the behest of her will
was only due to her retrospective perspective on the event. The interpretation of these
findings has been criticized by Daniel Dennett, who argues that people will have to shift
their attention from their intention to the clock, and that this introduces temporal mismatches
between the felt experience of will and the perceived position of the clock hand.[67][68]
Consistent with this argument, subsequent studies have shown that the exact numerical
value varies depending on attention.[69][70] Despite the differences in the exact numerical
value, however, the main finding has held.[71]
In a variation of this task, Haggard and Eimer asked subjects to decide not only when to move
their hands, but also to decide which hand to move. In this case, the felt intention correlated
much more closely with the "lateralized readiness potential" (LRP), an EEG component which
measures the difference between left and right hemisphere brain activity. Haggard and Eimer
argue that the feeling of conscious will therefore must follow the decision of which hand to
move, since the LRP reflects the decision to lift a particular hand.[69]
Related experiments showed that neurostimulation could affect which hands people move,
even though the experience of free will was intact. Ammon and Gandevia found that it was
possible to influence which hand people move by stimulating frontal regions that are involved
in movement planning using transcranial magnetic stimulation in either the left or right hemisphere
of the brain.[72] Right-handed people would normally choose to move their right hand 60%
of the time, but when the right hemisphere was stimulated they would instead choose their
left hand 80% of the time (recall that the right hemisphere of the brain is responsible for the
left side of the body, and the left hemisphere for the right). Despite the external influence
on their decision-making, the subjects continued to report that they believed their choice of
hand had been made freely. In a follow-up experiment, Alvaro Pascual-Leone and colleagues
found similar results, but also noted that the transcranial magnetic stimulation must occur
within 200 milliseconds, consistent with the time-course derived from the Libet experiments.[73]
Despite these findings, Libet himself does not interpret his experiment as evidence of the
inefficacy of conscious free will—he points out that although the tendency to press a button
may be building up for 500 milliseconds, the conscious will retains a right to veto that action
n the last few milliseconds.[74] According to this model, unconscious impulses to perform a
volitional act are open to suppression by the conscious efforts of the subject (sometimes referred to
as "free won't"). A comparison is made with a golfer, who may swing a club several times before
striking the ball. The action simply gets a rubber stamp of approval at the last millisecond. Max
Velmans argues however that "free won't" may turn out to need as much neural preparation as
"free will".[75]
[edit] Neurology and psychiatry
There are several brain-related conditions in which an individual's actions are not
felt to be entirely under his or her control. Although the existence of such conditions
does not directly refute the existence of free will, the study of such conditions, like the
neuroscientific studies above, is valuable in developing models of how the brain may
construct our experience of free will.
For example, people with Tourette syndrome and related tic disorders make involuntary
movements and utterances, called tics, despite the fact that they would prefer not to do
so when it is socially inappropriate. Tics are described as semi-voluntary or "unvoluntary"
[76] because they are not strictly involuntary: they may be experienced as a voluntary
response to an unwanted, premonitory urge. Tics are experienced as irresistible and
must eventually be expressed.[76] People with Tourette syndrome are sometimes able
to suppress their tics to some extent for limited periods, but doing so often results in
an explosion of tics afterward. The control which can be exerted (from seconds to hours
at a time) may merely postpone and exacerbate the ultimate expression of the tic.[77]
In alien hand syndrome, the afflicted individual's limb will produce meaningful behaviours
without the intention of the subject. The clinical definition requires "feeling that one limb is
foreign or has a will of its own, together with observable involuntary motor activity"
(emphasis in original).[78] This syndrome is often a result of damage to the corpus callosum,
either when it is severed to treat intractable epilepsy or due to a stroke. The standard neurological
explanation is that the felt will reported by the speaking left hemisphere does not correspond
with the actions performed by the non-speaking right hemisphere, thus suggesting that the two
hemispheres may have independent senses of will.[79][80]
Similarly, one of the most important ("first rank") diagnostic symptoms of schizophrenia is the
delusion of being controlled by an external force.[81] People with schizophrenia will sometimes
report that, although they are acting in the world, they did not initiate, or will, the particular
actions they performed. This is sometimes likened to being a robot controlled by someone else.
Although the neural mechanisms of schizophrenia are not yet clear, one influential hypothesis is
that there is a breakdown in brain systems that compare motor commands with the feedback
received from the body (known as proprioception), leading to attendant hallucinations and
delusions of control.[82]
Also, obsessive-compulsive disorder and other compulsive behaviour, such as compulsive overeating
and addiction, may be linked to a lack of free will. And only hints, or degrees, of this may be linked
to a lack of totally free will.
Determinism and emergent behaviour
Main article: Emergence
In generative philosophy of cognitive sciences and evolutionary psychology, free will is
assumed not to exist.[83][84] However, an illusion of free will is created, within this theoretical
context, due to the generation of infinite or computationally complex behaviour from the interaction
of a finite set of rules and parameters. Thus, the unpredictability of the emerging behaviour
from deterministic processes leads to a perception of free will, even though free will as an
ontological entity is assumed not to exist.[83][84] In this picture, even if the behavior could
be computed ahead of time, no way of doing so will be simpler than just observing the outcome
of the brain's own computations.[85]
As an illustration, some strategy board games have rigorous rules in which no information
(such as cards' face values) is hidden from either player and no random events
(such as dice rolling) occur in the game. Nevertheless, strategy games like chess and
especially Go, with its simple deterministic rules, can have an extremely large number of
unpredictable moves. By analogy, "emergentists" suggest that the experience of free
will emerges from the interaction of finite rules and deterministic parameters that generate
infinite and unpredictable behaviour. Yet, if all these events were accounted for, and there
were a known way to evaluate these events, the seemingly unpredictable behavior would
become predictable.[83][84]
Cellular automata and the generative sciences can model emergent processes of social behavior on this
philosophy.[83]
Experimental psychology
Experimental psychology's contributions to the free will debate have come primarily through
social psychologist Daniel Wegner's work on conscious will. In his book, The Illusion of Conscious
Will[86] Wegner summarizes empirical evidence supporting the view that human perception of
conscious control is an illusion. Wegner observes that one event is inferred to have caused a
second event when two requirements are met:
1. The first event immediately precedes the second event, and
2. The first event is consistent with having caused the second event.
For example, if a person hears an explosion and sees a tree fall down that person is
likely to infer that the explosion caused the tree to fall over. However, if the explosion
occurs after the tree falls down (i.e., the first requirement is not met), or rather than an
explosion, the person hears the ring of a telephone (i.e., the second requirement is not met),
then that person is not likely to infer that either noise caused the tree to fall down.
Wegner has applied this principle to the inferences people make about their own conscious will.
People typically experience a thought that is consistent with a behavior, and then they observe
themselves performing this behavior. As a result, people infer that their thoughts must have caused
the observed behavior. However, Wegner has been able to manipulate people's thoughts and behaviors
so as to conform to or violate the two requirements for causal inference.[86][87] Through such work,
Wegner has been able to show that people will often experience conscious will over behaviors that they
have in fact not caused, and conversely, that people can be led to experience a lack of will over
behaviors that they did cause. The implication for such work is that the perception of conscious
will is not tethered to the execution of actual behaviors. Although many interpret this work as a
blow against the argument for free will, Wegner has asserted that his work informs only of the
mechanism for perceptions of control, not for control itself.
In Eastern philosophy
In Hindu philosophy
The six orthodox (astika) schools of thought in Hindu philosophy do not agree with each other
entirely on the question of free will. For the Samkhya, for instance, matter is without any freedom,
and soul lacks any ability to control the unfolding of matter. The only real freedom (kaivalya)
consists in realizing the ultimate separateness of matter and self. For the Yoga school, only
Ishvara is truly free, and its freedom is also distinct from all feelings, thoughts, actions, or wills,
and is thus not at all a freedom of will. The metaphysics of the Nyaya and Vaisheshika schools
strongly suggest a belief in determinism, but do not seem to make explicit claims about
determinism or free will.[88]
A quotation from Swami Vivekananda, a Vedantist, offers a good example of the worry about free will in the Hindu tradition.
Therefore we see at once that there cannot be any such thing as free-will; the very words are a
contradiction, because will is what we know, and everything that we know is within our universe,
and everything within our universe is moulded by conditions of time, space and causality. ... To acquire
freedom we have to get beyond the limitations of this universe; it cannot be found here.[89]
However, the preceding quote has often been misinterpreted as Vivekananda implying that
everything is predetermined. What Vivekananda actually meant by lack of free will was that the
will was not "free" because it was heavily influenced by the law of cause and effect – "The will is
not free, it is a phenomenon bound by cause and effect, but there is something behind the will
which is free."[89] However, Vivekananda never said that it was absolutely determined and placed
emphasis on the power of conscious choice to alter one's past Karma: "It is the coward and the fool
who says this is his fate. But it is the strong man who stands up and says I will make my own fate."[89]
Mimamsa, Vedanta, and the more theistic versions of Hinduism such as Shaivism and Vaishnavism,
have often emphasized the importance of free will. The doctrine of Karma in Hinduism requires both
that we pay for our actions in the past, and that our actions in the present be free enough to allow
us to deserve the future reward or punishment that we will receive for our present actions.
In Buddhist philosophy
Buddhism accepts both freedom and determinism (or something similar to it), but rejects the idea of
an agent, and thus the idea that freedom is a free will belonging to an agent.[90] According to The
Buddha, "There is free action, there is retribution, but I see no agent that passes out from one set
of momentary elements into another one, except the [connection] of those elements."[90] Buddhists
believe in neither absolute free will, nor determinism. It preaches a middle doctrine, named
pratitya-samutpada in Sanskrit, which is often translated as "inter-dependent arising". It is
part of the theory of karma in Buddhism. The concept of karma in Buddhism is different from the
notion of karma in Hinduism. In Buddhism, the idea of karma is much less deterministic. The Buddhist
notion of karma is primarily focused on the cause and effect of moral actions in this life, while in Hinduism
the concept of karma is more often connected with determining one's destiny in future lives.
In Buddhism it is taught that the idea of absolute freedom of choice (i.e. that any human being
could be completely free to make any choice) is foolish, because it denies the reality of one's
physical needs and circumstances. Equally incorrect is the idea that we have no choice in life or
that our lives are pre-determined. To deny freedom would be to undermine the efforts of Buddhists
to make moral progress (through our capacity to freely choose compassionate action).
Pubbekatahetuvada, the belief that all happiness and suffering arise from previous actions,
is considered a wrong view according to Buddhist doctrines. Because Buddhists also reject
agenthood, the traditional compatibilist strategies are closed to them as well. Instead, the
Buddhist philosophical strategy is to examine the metaphysics of causality. Ancient India had
many heated arguments about the nature of causality with Jains, Nyayists, Samkhyists, Cārvākans,
and Buddhists all taking slightly different lines. In many ways, the Buddhist position is closer
to a theory of "conditionality" than a theory of "causality", especially as it is expounded by
Nagarjuna in the Mūlamadhyamakakārikā.[90]
In Kashmir Shaivism
The concept of free will plays a central role in Kashmir Shaivism. Known under the technical name
of svātantrya it is the cause of the creation of the universe - a primordial force that stirs up
the absolute and manifests the world inside the supreme consciousness of Śiva.
Svātantrya is the sole property of God, all the rest of conscious subjects being co-participant
in various degrees to the divine sovereignty. Humans have a limited degree of free will based
on their level of consciousness. Ultimately, Kashmir Shaivism as a monistic idealist philosophical
system views all subjects to be identical - "all are one" - and that one is Śiva, the supreme
consciousness. Thus, all subjects have free will but they can be ignorant of this power.
Ignorance too is a force projected by svātantrya itself upon the creation and can only be
removed by svātantrya.
A function of svātantrya is that of granting divine grace - śaktipāt. In this philosophical system
spiritual liberation is not accessible by mere effort, but dependent only on the will of God. Thus,
the disciple can only surrender himself and wait for the divine grace to come down and eliminate
the limitations that imprison his consciousness.
Causality in Kashmir Shaivism is considered to be created by Svātantrya along with the universe.
Thus there can be no contradiction, limitation or rule to force Śiva to act one way or the other.
Svātantrya always exists beyond the limiting shield of cosmic illusion, māyā.
[edit] In other theology
Further information: Free will in theology
The theological doctrine of divine foreknowledge is often alleged to be in conflict with free will,
particularly in Reformed circles. For if God knows exactly what will happen, right down to every
choice one makes, the status of choices as free is called into question. If God had timelessly
true knowledge about one's choices, this would seem to constrain one's freedom.[91]
This problem is related to the Aristotelian problem of the sea battle: tomorrow there will or
will not be a sea battle. If there will be one, then it seems that it was true yesterday that there
would be one. Then it would be necessary that the sea battle will occur. If there won't be one,
then by similar reasoning, it is necessary that it won't occur.[92] This means that the future,
whatever it is, is completely fixed by past truths—true propositions about the future.
However, some philosophers follow William of Ockham in holding that necessity and possibility are
defined with respect to a given point in time and a given matrix of empirical circumstances, and so
something that is merely possible from the perspective of one observer may be necessary from the
perspective of an omniscient.[93] Some philosophers follow Philo of Alexandria in holding that free
will is a feature of a human's soul, and thus that non-human animals lack free will.[94]
Jewish philosophy stresses that free will is a product of the intrinsic human soul, using the
word neshama (from the Hebrew root n.sh.m. or .נ.ש.מ meaning "breath"), but the ability to
make a free choice is through Yechida (from Hebrew word "yachid", יחיד, singular), the part
of the soul which is united with God, the only being that is not hindered by or dependent on
cause and effect (thus, freedom of will does not belong to the realm of the physical reality,
and inability of natural philosophy to account for it is expected). In Islam the theological
issue is not usually how to reconcile free will with God's foreknowledge, but with God's jabr,
or divine commanding power. al-Ash'ari developed an "acquisition" or "dual-agency" form of
compatibilism, in which human free will and divine jabr were both asserted, and which became
a cornerstone of the dominant Ash'ari position.[95] In Shia Islam, Ash'aris understanding of
a higher balance toward predestination is challenged by most theologists[96] . Free will,
according to Shia Islamic doctrine is the main factor for man's accountability in his/her
actions throughout life. All actions taken by man's free will are said to be counted on
the Day of Judgement because they are his/her own and not God's.
The philosopher Søren Kierkegaard claimed that divine omnipotence cannot be separated
from divine goodness.[97] As a truly omnipotent and good being, God could create beings
with true freedom over God. Furthermore, God would voluntarily do so because "the greatest
good ... which can be done for a being, greater than anything else that one can do for it, is
to be truly free."[98] Alvin Plantinga's "free will defense" is a contemporary expansion of this
theme, adding how God, free will, and evil are consistent.[99]
See also
Argument from free will (the argument that free will and an omniscient God are incompatible)
Autonomy
Black swan theory[100]
Buridan's ass
Causality
Compatibilism and incompatibilism
Determinism
Existentialism
Free will in theology
Free will theorem
Freethought
Morality
Newcomb's paradox
Philosophy of freedom
Predestination
Prevenient grace
Problem of evil (for which human free will is offered as one explanation)
Problem of future contingents
Randomness
Responsibility assumption
Uncertainty principle
Voluntarism
Best of all possible worlds
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Philosophy of Kalam, Harvard University Press 1976 and [1][dead link]
96. ^ Man and His Destiny
97. ^ Jackson, Timothy P. (1998) "Arminian edification: Kierkegaard on grace and free will" in
Cambridge Companion to
Kierkegaard, Cambridge University Press, Cambridge, 1998.
98. ^ Kierkegaard, Søren. (1848) Journals and Papers, vol. III. Reprinted in Indiana University
Press, Bloomington,
1967–78.
99. ^ Mackie, J.L. (1955) "Evil and Omnipotence," Mind, new series, vol. 64, pp. 200–212.
100. ^ Life is unpreditable get used to it article in New Scientist
Further reading
* Bischof, Michael H. (2004). Kann ein Konzept der Willensfreiheit auf das Prinzip der alternativen
Möglichkeiten verzichten? Harry G. Frankfurts Kritik am Prinzip der alternativen Möglichkeiten (PAP).
In: Zeitschrift für philosophische Forschung (ZphF), Heft 4.
* Epstein J.M. (1999). Agent Based Models and Generative Social Science.
Complexity, IV (5).
* Gazzaniga, M. & Steven, M.S. (2004) Free Will in the 21st Century: A Discussion of Neuroscience
and Law, in Garland, B. (ed.) Neuroscience and the Law: Brain, Mind and the Scales of Justice, New
York: Dana Press, ISBN 1932594043, pp51–70.
* Goodenough, O.R. (2004) Responsibility and punishment, Philosophical Transactions of the
Royal Society: Biological Sciences (Special Issue: Law and the Brain), 359, 1805–1809.
* Hofstadter, Douglas. (2007) I Am A Strange Loop. Basic Books. ISBN 978-0465030781
* Kane, Robert (1998). The Significance of Free Will. New York: Oxford University Press ISBN 0-19-512656-4
* Lawhead, William F. (2005). The Philosophical Journey: An Interactive Approach. McGraw-Hill Humanities/Social
Sciences/Languages ISBN 0-07-296355-7.
* Libet, Benjamin; Anthony Freeman; and Keith Sutherland, eds. (1999). The Volitional Brain: Towards a Neuroscience of
Free Will. Exeter, UK: Imprint Academic. Collected essays by scientists and philosophers.
* Morris, Tom Philosophy for Dummies. IDG Books ISBN 0-7645-5153-1.
* Muhm, Myriam (2004). Abolito il libero arbitrio - Colloquio con Wolf Singer. L'Espresso 19.08.2004
www.larchivio.org/xoom/myriam-singer.htm
* Nowak A., Vallacher R.R., Tesser A., Borkowski W. (2000). Society of Self: The emergence of collective properties in
self-structure. Psychological Review. 107
* Schopenhauer, Arthur (1839). On the Freedom of the Will., Oxford: Basil Blackwell ISBN 0-631-14552-4.
* Van Inwagen, Peter (1986). An Essay on Free Will. New York: Oxford University Press ISBN 0-19-824924-1.
* Velmans, Max (2003) How Could Conscious Experiences Affect Brains? Exeter: Imprint Academic ISBN 0907845-39-8.
* Wegner, D. (2002). The Illusion of Conscious Will. Cambridge: Bradford Books
* Williams, Clifford (1980). Free Will and Determinism: A Dialogue. Indianapolis: Hackett Publishing Co.
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* Stanford Encyclopedia of Philosophy entries:
o "Free Will"
o "Incompatibilism"
o "Divine Foreknowledge and Free Will"
* "Free Will" by Galen Strawson in Routledge Encyclopedia of Philosophy
* Free will, evolution and chaos theory
* History of the Free Will Problem
* The Nature of Free Will by Peter Voss
* Article at Roman Catholic Encyclopedia
* Article at Determinism and Freedom Philosophy Website
* An Introduction to Free Will and Determinism by Paul Newall, aimed at beginners.
* The Standard Argument Against Free Will
* "How to think about the problem of free will" by Peter van Inwagen
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