Reading Randolph Clarke

June 29th, 2009
From Randolph Clarke’s web page at Florida State University

My primary research interests are issues concerning human agency, particularly intentional action, free will, and moral responsibility. I’ve also written on practical reason, mental causation, and dispositions.I favor a causal theory of action, on which something counts as an intentional action in virtue of being appropriately caused by mental events of certain sorts, such as the agent’s having an intention with pertinent content. This kind of action theory takes human agency to be a natural phenomenon, something of a kind with (even if differing in sophistication from) the agency of many non-human animals.

Many philosophers have thought that free and morally responsible action would be ruled out if our actions were causally determined by prior events. My book, Libertarian Accounts of Free Will, examines whether indeterminism of any sort is more hospitable. Though I defend libertarian views (accounts requiring indeterminism) from several common objections, I argue that none of these accounts is adequate. If responsibility isn’t compatible with determinism, then, I think, it isn’t possible.

Clarke introduced the terms “broad incompatibilism” and “narrow incompatibilism.” A narrow incompatibilist is an incompatibilist on free will and a compatibilist on moral responsibility. A broad incompatibilist sees determinism as incompatible with both free will and moral responsibility.Narrow incompatibilism resembles John Martin Fischer’s term semicompatibilism.Semicompatibilism is the idea that moral responsibility is compatible with determinism.

The term “incompatibilism” is used to characterize both determinists and libertarians.

Thus broad incompatibilism resembles Derek Pereboom’s term “hard incompatibilism.” Hard incompatibilism is the idea that free will and moral responsibility do not exist. Some hard incompatibilists like Saul Smilansky and Daniel Wegner call free will an illusion.

Like many philosophers, Clarke tends to equate moral responsibility with simple responsibility or accountability, that is, being the cause of an action.

In recent years, it has come to be a matter of some dispute whether moral responsibility requires free will, where the latter is understood as requiring anability to do otherwise.I shall not take sides here in these disputes. I treat the thesis that responsibility is incompatible with the truth of determinism as a separate claim, and I call incompatibilism without this further claim “narrow.” Narrow incompatibilism holds that free will, understood as indicated above, is incompatible with determinism, but it (at least) allows that responsibility and determinism may be compatible. I call the position that free will and determinism are not compatible but responsibility and determinism are compatible “merely narrow incompatibilism.” A semicompatibilist may endorse merely narrow incompatibilism, but she need not, as she may remain uncommitted on the question whether determinism precludes the ability to do otherwise. I call the view that both free will and responsibility are incompatible with determinism “broad incompatibilism.” (Libertarian Accounts of Free Will, p.11)

The technical language of philosophers specializing in free will is a total mess, quite opposite to the stated goal of analytic language philosophy to make conceptual analysis clear. This makes it very difficult for outsiders (and some insiders) to follow their contentious debates.

Conceptual analysis would be much easier if a more careful separation of concepts was made, for example “free” from “will,” and “free will” from “moral responsibility.”

Clarke’s Objections to Dennett, Mele, Ekstrom, Kane and our Cogito Model.

Clarke defines additional new terms in his Libertarian Accounts of Free Will. He calls Daniel Dennett’s two-stage model of decision making “deliberative,” since quantum randomness internal to the mind is limited to the deliberations. And he calls Robert Kane’s model “centered,” by which he means the quantum randomness is in the center of the decision itself.Clarke accepts the Kane and Ekstrom views that if the agent’s decision simply results from the events in the deliberation phase that that could not be what he calls “directly free.” Clarke calls this deliberative freedom “indirect.”

“Indirectly free” is a reasonable description for our Cogito Model, which has indeterminism in the “free” deliberation stage and “adequate” determinism in the “will” stage.

Although Clarke says that a “centered event-causal libertarian view provides a conceptually adequate account of free will,” he doubts that it can provide for moral responsibility. He says that

An event-causal libertarian view secures ultimate control, which no compatibilist account provides. But the secured ultimacy is wholly negative: it is just (on a centered view) a matter of the absence of any determining cause of a directly free action. The active control that is exercised on such a view is just the same as that exercised on an event-causal compatibilist account.

It is a bit puzzling to see how the active control of a libertarian decision based on quantum randomness is “just the same as that exercised” on a compatibilist account, unless it means, as Double argued, no control at all. So it may be worth quoting Clarke at length.

Dennett requires only that the coming to mind of certain beliefs be undetermined; Mele maintains that (in combination with the satisfaction of compatibilist requirements) this would suffice, as would the undetermined coming to mind of certain desires.Likewise, on Ekstrom’s view, we have undetermined actions — the formations of preferences — among the causes of free decisions. But she does not require that these preference-formations either be or result from free actions. Nor can she require this. Any free action, she holds, must be preceded by a preference-formation. An infinite regress would be generated if these preference-formations had to either be or result from free actions. And a similar regress would result if Dennett or Mele required that the undetermined comings-to-mind, attendings, or makings of judgments that figure in their accounts had to either be or result from free actions.

Thus, given the basic features of these views, all three must allow that an action can be free even if it is causally determined and none of its causes, direct or indirect, is a free action by that agent. Setting aside the authors currently under discussion, it appears that all libertarians disallow such a thing. What might be the basis for this virtual unanimity?

When an agent acts with direct freedom — freedom that is not derived from the freedom of any earlier action— she is able to do other than what she, in fact, does. Incompatibilists (libertarians included) maintain that, if events prior to one’s birth (indirectly) causally determine all of one’s actions, then one is never able to do other than perform the actions that one actually performs, for one is never able to prevent either those earlier events or the obtaining of the laws of nature.

Clarke now claims that even prior events thought up freely by the agent during deliberations will “determine” the agent’s decision. This is roughly what the Cogito Model claims. After indeterminism in the “free” deliberation stage, we need “adequate” determinism in the “will” stage to insure that our actions are consistent with our character and values (including Kane’s SFAs), with our habits and (Ekstrom’s) preferences, and with our current feelings and desires.Clarke oddly attempts to equate events prior to our births with events in our deliberations, claiming that they are equally determinist. He says,

If this is correct, then a time-indexed version of the same claim is correct, too. If events that have occurred by time t causally determine some subsequent action, then the agent is not able at t to do other than perform that action, for one is not able at t to prevent either events that have occurred by t or the obtaining of the laws of nature. An incompatibilist will judge, then, that, on Dennett’s and Mele’s views, it is allowed that once the agent has made an evaluative judgment, she is not able to do other than make the decision that she will, in fact, make, and that, on Ekstrom’s view, it is allowed that once the preference is formed, again the agent is not able to avoid making the decision that she will, in fact, make. If direct freedom requires that, until an action is performed, the agent be able to do otherwise, then these views do not secure the direct freedom of such decisions.Mele confronts this line of thinking head-on. Some libertarians, he acknowledges, do hold that a decision is directly free only if, until it is made, the agent is able to do other than make that decision, where this is taken to require that, until the action occurs, there is a chance that it will not occur. But such a position, Mele charges, is “mere dogmatism” (1995a: 218). It generates the problem of control that he (along with Dennett and Ekstrom) seeks to evade, and hence libertarians would do well to reject this position.

There is, however, a decisive reason for libertarians not to reject this position, a reason that stems from the common belief — one held by compatibilists and incompatibilists alike — that, in acting freely, agents make a difference, by exercises of active control, to how things go. The difference is made, on this common conception, in the performance of a directly free action itself, not in the occurrence of some event prior to the action, even if that prior event is an agent-involving occurrence causation of the action by which importantly connects the agent, as a person, to her action. On a libertarian understanding of this difference-making, some things that happen had a chance of not happening, and some things that do not happen had a chance of happening, and in performing directly free actions, agents make the difference. If an agent is, in the very performance of a free action, to make a difference in this libertarian way, then that action itself must not be causally determined by its immediate antecedents. In order to secure this libertarian variety of difference-making, an account must locate openness and freedom-level active control in the same event — the free action itself — rather separate these two as do deliberative libertarian views.

On the views of Dennett, Ekstrom, and Mele, agents might be said to make a difference between what happens but might not have and what does not happen but might have, but such a difference is made in the occurrence of something nonactive or unfree prior to the action that is said to be free, not in the performance of the allegedly free action itself. Failure to secure for directly free actions this libertarian variety of difference-making constitutes a fundamental inadequacy of deliberative libertarian accounts of free action.
(Libertarian Accounts of Free Will, p.63-4)

We need only extend the process of decision to include everything from the start of freedeliberations to the moment of willed choice to see that the Cogito Model allows the agent to make a real difference. The agent is justified saying “I could have done otherwise,” “This action was up to me,” and “I am the originator of my actions and the author of my life.”Clarke goes on to consider his “centered” event-causal view, and initially claims that it provides an adequate account of free will, but his “adequate” is damning with faint praise.

Clarke finds a “conceptually adequate account of free will” for narrow, but not for broad, incompatibilism. His “centered” account, like that of Kanevan InwagenEkstrom, andBalaguer, includes indeterminism in the decision itself. It is not limited to deliberations as in most two-stage models.

If merely narrow incompatibilism is correct, then an unadorned, centered event-causal libertarian view provides a conceptually adequate account of free will. Such a view provides adequately for fully rational free action and for the rational explanation — simple, as well as contrastive — of free action. The indeterminism required by such a view does not diminish the active control that is exercised when one acts. Given incompatibilism of this variety, a libertarian account of this type secures both the openness of alternatives and the exercise of active control that are required for free will.

It is thus unnecessary to restrict indeterminism, as deliberative accounts do, to locations earlier in the processes leading to free actions. Indeed, so restricting indeterminism undermines the adequacy of an event-causal view. Any adequate libertarian account must locate the openness of alternatives and freedom-level active control in the same event — in a directly free action itself. For this reason, an adequate event-causal view must require that a directly free action be nondeterministically caused by its immediate causal antecedents.

If, on the other hand, broad incompatibilism is correct, then no event-causal account is adequate. An event-causal libertarian view secures ultimate control, which no compatibilist account provides. But the secured ultimacy is wholly negative: it is just (on a centered view) a matter of the absence of any determining cause of a directly free action. The active control that is exercised on such a view is just the same as that exercised on an event-causal compatibilist account.

This sort of libertarian view fails to secure the agent’s exercise of any further positive powers to causally influence which of the alternative courses of events that are open will become actual. For this reason, if moral responsibility is precluded by determinism, the freedom required for responsibility is not secured by any event-causal libertarian account. (pp.219-20)

A Flaw in the Standard Argument Against Free Will?

June 26th, 2009

The simple and logical argument against free will is that either determinism or indeterminism is true.

If determinism is true, we are not free.

If indeterminism is true, our actions are random, so we did not will them.

We are not responsible either way. Ergo, no free will. Q.E.D.

The flaw in the argument concerns indeterminacy. Because logic is time and space independent, many philosophers assume that if indeterminism if true, randomness is significant and relevant at all times and all places, independent of scale or size.

But indeterminacy is normally important only for microscopic structures. Macroscopic structures, including our brains and bodies, are adequately determined - except when some useful indeterminacy helps us to generate alternative possibilities, or (and this is very important) allows us to be creative and bring genuinely new information into the universe.

So could you accept some chance in your own causal chain that would not make your decisions random?

I suggest seven places where even compatibilists and determinists might accept some chance in the causal chain leading up to their latest decision, which I hope they might agree is an “adequately determined” decision that is truly “up to them.”

1) Only at the original moment of the “big bang.”
(This leads us to Peter van Inwagen’s Consequence Argument).

2) During genetic mutations that created the species homo sapiens.
(Without this chance, none of us would be here.)

3) Nine months before your birth. (It was one in a million which of your father’s sperm would win the race to your mother’s egg. Without this one, you wouldn’t be one of us.)

4) During your moral education.
(These are those rare events that C. S. Peirce calls the “fixation of beliefs,” and Bob Kane calls “self-forming actions.” These are important because they may contribute to your latest decisions.)

5) When you decided to become a philosopher.
(Again, without this one, you wouldn’t be part of the Garden. How many of you think chance might have played a part?)

6) During deliberation about your current options.
(In these sometimes extended moments, your subconscious processing of possibilities may consider thousands of input factors and evaluate enormous numbers of possible outcomes. If you are creative, you may come up with ideas never thought of by anyone before you. Thus chance and indeterminacy is involved up until a fraction of a second before your “moment of choice.” This is my Cogito model. www.informationphilosopher.com/freedom/cogito/)

6) During the decision itself.
(Bob Kane, Laura Ekstrom, Mark Balaguer and others argue that your decision must not be “determined” by all the considerations that arise during your deliberation. You are not free enough , they say, even if some of the alternative posssibilities might be random combinations of your own past experiences that you have dreamed up yourself.

Compatibilists should be quite content to think that this decision is adequately determined (that randomness is negligible ) by an evaluation process that included our character and values, our habits and preferences, our current feelings and desires, etc. This then is a “kind of freedom available to us,” as Galen Strawson recently agreed.)

I think the Libertarians have been right about the need for some indeterminacy, but they are wrong to try to push it into our decisions themselves, with one exception.  Mark Balaguer’s “torn decisions,” perhaps some of Kane’s “decisions requiring great effort,” and in general Buridan-type “liberty of indifference” decisions, might all be made by flipping a “mental coin.” If we are fully aware that it is a random choice, and if we are prepared to accept responsibility either way, perhaps we can still regard this as an act of our will.

On my Information Philosopher website, I have researched over twenty recent philosophers (including a few Gardeners) who have published versions of this simple and logical argument. It apparently has convinced them, and perhaps hundreds or thousands of their philosophy students and readers of their textbooks.

See the Standard Argument Against Free Will.

None of them appear to have seen this flaw. Do you agree that there is a flaw here that might be corrected by a clearer description of how indeterminacy can be limited - to do no harm to an adequate determinism.

More important, do you see how indeterminacy can help to provide a kind of freedom from the fixed past (and the laws of nature, as the argument goes) and an ability for humans to be creative individuals?

Letter to Nature on Free Will

June 25th, 2009

My first publication on Free Will appeared in today’s issue of Nature.

NATURE|Vol 459|25 June 2009, p 1052

Free will: it’s a normal
biological property,
not a gift or a mystery

SIR — In his Essay ‘Is free will an
illusion?’ (Nature 459, 164–165;
2009), Martin Heisenberg argues
that humans must have free
will because freedom of action
has been demonstrated in other
animals — including those as
small as fruitflies and bacteria.
Heisenberg’s case rests on a
combination of random chance
and lawfulness, escaping the
classic two-horned dilemma
of determinism versus
indeterminism that is so popular
in introductory philosophy
courses and textbooks.

Starting with William James
in 1884, such a two-stage
combination of ‘free’ and
then ‘will’ has frequently been
proposed by philosophers and
scientists: notable among these
are some quantum physicists
after Martin’s father, Werner
Heisenberg, established
irreducible physical randomness
with his indeterminacy principle in
1927. But academic philosophers,
particularly those who work in
the Anglo-American school of
analytical language philosophy,
have been reluctant to embrace
these ideas.

The philosophers’ standard
argument against free will is
simple and logical. If our actions
are determined, we are not free.
If nature is not determined,
then indeterminism is true.
Indeterminism implies that our
actions are random. If our actions
are random, we did not will them.

Heisenberg’s proposal makes
freedom a normal biological
property of most living things
and not a metaphysical mystery
or a gift from God to humanity.
Its genius is that it combines
randomness with an adequate
macroscopic determinism
consistent with microscopic
quantum mechanics.

John Locke wrote in his Essay
Concerning Human Understanding,
Book II, that it is not the will
that is free but the man. The
will determines our actions.
Heisenberg writes that Kant
would have been pleased. Locke
too might have been pleased to
see this return to common sense.
We may not have metaphysical
free will but we do have
biophysical free will.

Robert O. Doyle Astronomy
Department, Harvard University,
77 Huron Avenue, Cambridge,
Massachusetts 02138, USA

Reading Philippa Foot

June 8th, 2009

Philippa Foot is an Oxford-trained philosopher who argued for a neo-Aristotelian virtue ethics as opposed to deontology, utilitarianism, or consequentialism in ethics.

Foot created the famous moral thought experiment known as the trolley problem.

In 1957 she wrote an article in Mind entitled “Free Will As Involving Determinism.” Foot criticized arguments that free will requires determinism, and in particular the idea that one could not be held responsible for “chance” actions chosen for no particular reason.

Her article begins with the observation that determinism has become widely accepted as compatible with free will.

The idea that free will can be reconciled with the strictest determinism is now very widely accepted. To say that a man acted freely is, it is often suggested, to say that he was not constrained, or that he could have done otherwise if he had chosen, or something else of that kind; and since these things could be true even if his action was determined it seems that there could be room for free will even within a universe completely subject to causal laws. (Mind, vol LXVI, (1957), p.439)

Foot’s estimate of the wide acceptance of determinism is correct, but hard to reconcile with quantum indeterminacy in modern physics, as Elizabeth Anscombe pointed out a few years later in her inaugural lecture at Cambridge.

It has taken the inventions of indeterministic physics to shake the rather common dogmatic conviction that determinism is a presupposition or perhaps a conclusion, of scientific knowledge. Not that that conviction has been very much shaken even so…I find deterministic assumptions more common now among people at large, and among philosophers, than when I was an undergraduate. (Causality and Determination, 1971, p.28)

Foot examines arguments by David Hume, R. E. Hobart (the pseudonym of Dickinson S. Miller, a student and later colleague of William James), P. H. Nowell-Smith, Gilbert Ryle, and A. J. Ayer.

Foot doubted that the ordinary language meaning of saying our actions are “determined” by motives has the same meaning as strict physical determinism, which assumes a causal law that determines every event in the future of the universe. She cites Bertrand Russell’s view of causal determinism:

The law of universal causation . . . may be enunciated as follows:…given the state of the whole universe,…every previous and subsequent event can theoretically be determined.

Foot is also skeptical of the simple logical argument that everything happens either by chance or because it is causally determined. This is the standard argument against free will that makes indeterminism and determinism the two horns of a logical dilemma.

Foot notes that our normal use of “determined” does not imply universal determinism.

For instance, an action said to be determined by the desires of the man who does it is not necessarily an action for which there is supposed to be a sufficient condition. In saying that it is determined by his desires we may mean merely that he is doing something that he wants to do, or that he is doing it for the sake of something else that he wants. There is nothing in this to suggest determinism in Russell’s sense. (p.441)

And when we do something “by chance” it may not mean physically undetermined, and may not be used to deny responsibility.

It is not at all clear that when actions or choices are called “chance” or “accidental” this has anything to do with the absence of causes… Ayer says, “Either it is an accident that I choose to act as I do, or it is not.” The notion of choosing by accident to do something is on the face of it puzzling; for usually choosing to do something is opposed to doing it by accident. What does it mean to say that the choice itself was accidental? (p.449-50)If I say that it was a matter of chance that I chose to do something,…I do not imply that there was no reason for my doing what I did, and I say nothing whatsoever about my choice being undetermined. If we use “chance” and “accident” as Ayer wants to use them, to signify the absence of causes, we shall have moved over to a totally different sense of the words, and “I chose it by chance” can no longer be used to disclaim responsibility. (p.450)

Foot does not see that the role of chance and indeterminism might simply be to provide “free” alternative possibilities for action, to be deliberated upon and used as causes or reasons behind motives of our “will” as we choose to act.

She also does not seem to know that Hobart’s 1934 article was entitled “Free Will As Involving Determination And Inconceivable Without It.” In her reference (note 5), she thinks Hobart’s article has the same title she is using - “Free Will As Involving Determinism“.

Reading Mark Balaguer

June 5th, 2009

In 2004, Mark Balaguer wrote A Coherent, Naturalistic, and Plausible Formulation of Libertarian Free Will (NOÛS 38:3 (2004) 379–406).

In it he developed some ideas of Robert Kane into what Balaguer calls “L-freedom” in “torn decisions.”

These are decisions that require significant “effort” (C.A.Campbell) or what Kane called “self-forming actions” (SFAs).

Kane’s model combines free will and values. Kane claimed his free choice is moral and made in accord with Kant’s concept of duty versus one’s self-interest or desires. This is the ethical fallacy. Freedom is merely a prerequisite for responsibility.

Balaguer’s model and Kane’s model are “restrictive,” a term coined by John Martin Fischer to describe Peter van Inwagen’s claim that only a tiny fraction of our decisions and actions could be free actions. For van Inwagen, it is those which have closely balanced alternatives (the ancient problem of the liberty of indifference. For Kane, it is those rare and difficult decisions that are deeply moral. They are those moments in which are character is formed. Later decisions made consistent with our character and values can then be traced back to these “self-forming actions.” This provides us with what Kane calls ultimate responsibility or UR.

Balaguer also focuses on alternatives where reasons are closely balanced. The ancients called freedom in such cases liberum arbitrium indifferentiae. To prove that only humans had such a freedom, they denied it to animals in the classic example of Buridan’s Ass.

Balaguer says,

A torn decision is a decision in which the person in question (a) has reasons for two or more options and feels torn as to which set of reasons is strongest, i.e., has no conscious belief as to which option is best, given her reasons; and (b) decides without resolving this conflict—i.e., the person has the experience of “just choosing”. (p.382)

He defines L-freedom, in the case of these torn decisions, in terms of “appropriate non-randomness” and authorship and control as follows:

L-freedom is defined as the ability to make decisions that are simultaneously (a) undetermined and (b) appropriately non-random. Much needs to be said about what appropriate non-randomness amounts to, but for now, let me just say that the central requirement that a decision needs to satisfy in order to count as appropriately non-random is that of having been authored and controlled by the person in question; i.e., it has to have been her decision, and she has to have controlled which option was chosen. (p.382)

Balaguer expands the definition of appropriate non-randomness in terms of indeterminacy. He differs from most compatibilists and determinists who think that the laws of nature and the fixed past require our choice to be determined. He entertains the idea of quantum events in the brain just prior to choice, but if they are the direct cause of the choice then it is not L-freedom.

when I say that if a torn decision is undetermined, then it is appropriately non-random, what I mean is that if it’s undetermined at the moment of choice, then it’s appropriately non-random. Thus, if I say that a decision was determined, that does not mean it was determined prior to the agent’s birth, or any such thing; if an undetermined quantum event occurs in my head two seconds prior to a decision, and if this event (together with physical laws and other circumstances) causally determines my decision, then on my usage, the decision counts as determined. (p.383)

Balaguer then concludes that

if our torn decisions are undetermined at the moment of choice, then we author and control them. And I would like to point out here that this conclusion is introspectively satisfying. To appreciate this, suppose that a race of super-intelligent neuro-cognitive scientists studied your brain and told you that, in fact, your own torn decisions are undetermined at the moment of choice, so that when you make these decisions, nothing external to you makes you choose as you do. Would you conclude from this that you do not author or control these decisions? It seems to me that it would be downright bizarre to draw that conclusion. Indeed, if I found out that when I make my torn decisions, nothing external to me causally influences how I choose, I would conclude from this (together with what I already know about these decisions, namely, that they’re conscious, purposeful, intentional, and so on) that I do author and control these decisions. And this suggests to me that the intuitive notions of authorship and control do apply here, and hence, that if my torn decisions are undetermined at the moment of choice, then I author and control them. (p.393)

Balaguer realizes that he is trying to balance some indeterminacy with the control needed for us to be the authors and originators of our actions, that they are “up to us” (Aristotole’s ἐφ’ ἡμῖν).

He describes the standard two-horn dilemma argument against free will as randomness vs appropriate non-randomness.

Any event that’s undetermined is uncaused and, hence, accidental. That is, it just happens; i.e., happens randomly. Thus, if our decisions are undetermined, then they are random, and so they couldn’t possibly be “appropriately non-random”. Or to put the point the other way around, if our decisions are appropriately non-random, then they are authored and controlled by us; that is, we determine what we choose and what we don’t choose, presumably for rational reasons. Thus, if our decisions are appropriately non-random, then they couldn’t possibly be undetermined. Therefore, libertarianism is simply incoherent: it is not possible for a decision to be undetermined and appropriately non-random at the same time. (p.379)

Balaguer thinks his L-freedom might be extended to obtain even in the case where there is no imbalance of reasons, i.e., where sufficient reasons to make a choice already exist.

I would like to say a few words about cases in which the agent’s reasons pick out a unique best option and perhaps even causally determine the agent’s decision. I think that decisions like this can be free in the ordinary sense of the term, and I think that libertarians ought to allow that they can be L-free. (p.401)

Is Balaguer wrong to say these decisions are causally and strictly determined? In our view, they are merely “adequately determined” by our own reasons and desires. He knows that for large numbers quantum indeterminacy approaches classical determinacy.

it may be that these decisions are determined for all practical purposes; e.g., it may be that the neural events…are composed of large numbers of indeterministic quantum events that “cancel each other out.”

In two-stage models of free will, quantum events may allow random alternative possibilities in the first “free” stage. But in the second “will” stage, Balaguer is right that the conscious will is adequately “determined for all practical purposes“.

What would Balaguer’s race of super-intelligent neuro-cognitive scientists conclude about choices we make for good an sufficient reasons consistent with our character and values, with our habits, and with our current desires? As he said earlier,

“when you make these decisions, nothing external to you makes you choose as you do. Would you conclude from this that you do not author or control these decisions?…It seems to me that it would be downright bizarre to draw that conclusion.”

Response to Eddy Nahmias Consequence Argument

May 19th, 2009
Thanks for your version of the Consequence Argument.

Let me try to distinguish what I call the Cogito model of free will from yours/van Inwagen’s and Kane’s accounts.

I believe my model will appeal to many determinist/compatibilists because the results are only different where the randomness allows us to come up with an unpredictable and creative new idea.

PvI pointed out that a key discriminator is to see how free will models handle “exactly the same circumstances,” something Robert Kane calls “dual rational control.”

Given that A was the rational choice, how can one defend doing B under exactly the same circumstances?

Please see http://www.informationphilosopher.com/freedom/same_circumstances.html

PvI’s description, for example, assumes that chance is the direct cause of action.

Please see http://www.informationphilosopher.com/freedom/chance_direct_cause.html

van Inwagen says:

“Now let us suppose that God a thousand times caused the universe to revert to exactly the state it was in at t1 (and let us suppose that we are somehow suitably placed, metaphysically speaking, to observe the whole sequence of “replays”). What would have happened? What should we expect to observe? Well, again, we can’t say what would have happened, but we can say what would probably have happened: sometimes Alice would have lied and sometimes she would have told the truth. As the number of “replays” increases, we observers shall — almost certainly — observe the ratio of the outcome “truth” to the outcome “lie” settling down to, converging on, some value. We may, for example, observe that, after a fairly large number of replays, Alice lies in thirty percent of the replays and tells the truth in seventy percent of them—and that the figures ‘thirty percent’ and ’seventy percent’ become more and more accurate as the number of replays increases. But let us imagine the simplest case: we observe that Alice tells the truth in about half the replays and lies in about half the replays. If, after one hundred replays, Alice has told the truth fifty-three times and has lied forty-eight times, we’d begin strongly to suspect that the figures after a thousand replays would look something like this: Alice has told the truth four hundred and ninety-three times and has lied five hundred and eight times. Let us suppose that these are indeed the figures after a thousand [1001] replays. Is it not true that as we watch the number of replays increase we shall become convinced that what will happen in the next replay is a matter of chance.”
(”Free Will Remains a Mystery,” in Philosophical Perspectives, vol. 14, 2000, p.14)

I think this agrees with your points 4), 5) and 6), no choice about - or control over - the decision, thus no FW or MR.

For more on van Inwagen, please see http://www.informationphilosopher.com/solutions/philosophers/vaninwagen/
________________
Robert Kane is well aware of the problem that chance reduces moral responsibility, especially in his sense of Ultimate Responsibility (UR).

In order to keep some randomness, Kane says perhaps only some small percentage of decisions will be random, thus breaking the deterministic causal chain, but keeping most decisions predictable. Laura Ekstrom and others follow Kane with some indeterminism in the decision.

Let’s say randomness enters Kane’s decisions only ten percent of the time. The other ninety percent of the time, determinism is at work. In those cases, presumably Alice tells the truth. Then Alice’s thirty percent of random lies in van Inwagen’s first example would become a mere three percent.

But this in no way explains moral responsibility for those few cases.

For more on Kane, please see
http://www.informationphilosopher.com/solutions/philosophers/kane/
___________________
Compare the Information Philosophy model, which agrees with compatibilism/determinism except in cases where something genuinely new and valuable emerges as a consequence of randomness.

In our two-stage model, we have first “free” – random possibilities, then “will” – adequately determined selection of the best option.

Alice’s random generation of alternative possibilities will include seventy percent of options that are truth-telling, and thirty percent lies.

Alice’s will evaluates these possibilities based on her character, values, and current desires.

In the Information Philosopher’s Cogito model, she will almost certainly tell the truth. So it predicts almost the same outcome as a compatibilist/determinist model.

It is not identical, however, merely adequate determinism.

It is possible that among the genuinely new alternative possibilities generated, there will be one that determinism could not have produced.

It may be that Alice will find that option consistent with her character, values, desires, and the current situation she is in. That might include a pragmatic lie, to stay with van Inwagen’s example.

In a more positive example, it may include a creative new idea that information-preserving determinism could not produce.

Alice’s thinking might bring new information into the universe. And she can legitimately accept praise (or blame) for that new action or thought that originates with her.

For more on my model, please see http://www.informationphilosopher.com/freedom/cogito/
______________
To summarize the results:

……………. / Van Inwagen / Kane / Doyle / Compatibilism /

Alice tells truth /…. 70% /…. 97% /…. 100% /…. 100% /

Alice lies……. /…. 30% /…. 3% /…. 0%* /…. 0% /

* (unless a good reason emerges)

______________
Let’s consider the Moral Luck criticism of actions that have a random component in their source.

Alfred Mele would perhaps object that the alternative possibilities depend on luck, and that this compromises moral responsibility.

Mele may be right with respect to moral responsibility.

In any case, free will and creativity may very well depend on fortuitous circumstances, having the new idea “coming to mind” at the right time, as he says.

The universe we live in includes chance and therefore luck, including moral luck, is very real.

Martin Heisenberg on Free Will

May 17th, 2009

This week’s Nature magazine (14 May 2009) has an essay on free will by Martin Heisenberg (son of Werner), chair of the University of Wurzburg’s genetics and neurobiology section of their BioCenter.

Since the indeterminacy principle was his father’s work, the comment that the physical universe is no longer determined and that nature is inherently unpredictable comes as no surprise.

What is unusual is that Heisenberg finds evidence of free behavior in animals, including some very simple ones such as Drosophila, on which he is a world expert.

He says:

“the activation of behavioural modules is based on the interplay between chance and lawfulness in the brain. Insufficiently equipped, insufficiently informed and short of time, animals have to find a module that is adaptive. Their brains, in a kind of random walk, continuously preactivate, discard and reconfigure their options, and evaluate their possible short-term and long-term consequences.

“The physiology of how this happens has been little investigated. But there is plenty of evidence that an animal’s behaviour cannot be reduced to responses. For example, my lab has demonstrated that fruit flies, in situations they have never encountered, can modify their expectations about the consequences of their actions. They can solve problems that no individual fly in the evolutionary history of the species has solved before. Our experiments show that they actively initiate behaviour.”

When you combine some randomness with some “lawful” (read evolved and adequately determined) behaviors you get something like free will.

This is more or less exactly my work of the last few decades. Free will is a two-stage process.

First there is a random generation of alternative possibilities, some of which may be truly creative in the sense that they are new information in the universe.

Then an adequately determined will selects, from among these possibilities, the one best suited to one’s character and values, along with one’s current desires.

First free, then will.

It is not that the will is free in the sense of random. The will is determining and adequately determined.

Several other philosophers and scientists have had something close to this idea since William James in 1884, including Henri Poincaré, Arthur Holly Compton, A.O. Gomes, Karl Popper, Henry Margenau, Daniel Dennett, Robert Kane, and Alfred Mele.

For more details, you might want to look at a few of the web pages on informationphilosopher.com.

There you will find web pages on the above thinkers and over one hundred others who have considered the problem of free will, including several gardeners.

I am working on a history of the free will problem here (a very long page).
http://www.informationphilosopher.com/freedom/history/

Here is my version of the two-stage model (a much shorter page).
http://www.informationphilosopher.com/freedom/cogito/

Compare the standard argument against free will, which separately attacks randomness and strict determinism. Taken together, randomness and adequate determinism suggest that many compatibilists might consider a merely adequate compatibilism?
http://www.informationphilosopher.com/freedom/standard_argument.html

Abraham de Moivre

May 14th, 2009

Abraham de Moivre’s classic book The Doctrine of Chances (in three editions between 1718 and 1756) was basically a handbook for gamblers. It enabled them to know how to bet in various games of chance.

It begins…

The Probability of an Event is greater or less, according to the number of Chances by which it may happen, compared with the whole number of Choices by which it may happen or fail.

This brief statement contains the assumption that all states are equally probable, assuming that we have no information that indicates otherwise.

While this describes our information epistemically, making it a matter of human knowledge, we can say ontologically that the world contains no information that would make any state more probable than the others. Such information simply does not exist. This is sometimes called the principle of insufficient reason or the principle of indifference.

If that information did exist, it could and would be revealed in large numbers of experimental trials, which provide the statistics on the different “states.”

Probabilities are theories. Statistics are experiments.

In the philosophical controversies between a priori or epistemic interpretations of probability and a posteriori or ontological interpretations, the latter are often said to be “frequency” interpretations of probability. We prefer to use the term statistics for these frequencies.

de Moivre’s work underlies James Clerk Maxwell’s velocity distributions for the molecules in a gas, and Ludwig Boltzmann’s explanation for the increase of entropy in statistical mechanics (the second law of thermodynamics).

All other things being equal, any physical system evolves toward the macrostate with the greatest number of microstates consistent with the information contained in the macrostate. This information is intrinsic to the system. It may be observable, but it in no way depends on being observed or “known” to any observer.

Probability Distributions

In his book, de Moivre worked out the mathematics for the binomial expansion of (p - q)n by analyzing the tosses of a coin. If p is the probability of a “heads” and q = 1 - p the probability of “tails,” then the probability of k heads is

Pr(k) = (n!/(n - k)! k!)p(n - k)qk

de Moivre also was the first to approximate the factorial for large n as

n! ≈ (constant) √n nn e-n

James Stirling determined the constant in de Moivre’s approximation ( = √(2π), which is now commonly called Stirling’s formula.

Using this approximation, which is valid for large numbers, de Moivre went on to approximate the discrete binomial expansion with a continuous curve.

Pr(x) = (1/√(2π)) e-x2/2

Pierre-Simon Laplace also derived this result, which is sometimes called the de Moivre-Laplace Theorem. Laplace very likely knew of de Moivre’s work, but gave him no credit, perhaps because of de Moivre’s association with gambling, perhaps because de Moivre was a Huguenot protestant who had emigrated to England, or perhaps because Laplace’s great works summarized much of the previous century’s mathematics and science without giving credit to his predecessors.

Nearly 100 years later, Legendre and Gauss independently developed this curve as the distribution of measurement errors. It came to be poorly named the “law” of errors, misleading many philosophers to argue that random events were therefore lawful and determined by this underlying lawfulness.

In order to derive de Moivre’s curve as the distributions for errors, Legendre and Gauss made three assumptions - that errors are distributed symmetrically around a maximum value, that the value goes to zero for large positive and negative values of x, and that the mean value of errors is the average value, namely zero.

In Laplace’s hands, this tendency for the curve to peak around a maximum at the mean value in the limit of large numbers came to be called the central limit theorem.

Today the principle of indifference (equiprobability assumption), the law of large numbers, and the central limit theorem are three of the fundamental postulates of probability.

Returning to de Moivre’s original work, which was the chance occurrence of random events, it is very important to note that individual events are still very random, despite their asymptotic approach to the normal distribution in the limit of large numbers of events. The material world itself is discrete and random, despite the idealization of the analytical continuous probability curve discovered by de Moivre.

Schrödinger’s Cat

April 15th, 2009
Erwin Schrödinger’s intention for his infamous cat-killing box was to discredit certain non-intuitive implications of quantum mechanics, of which his wave mechanics was the first mathematical formulation.

Albert Einstein originated the suggestion that the superposition of Schrödinger’s wave functions implied that two different physical states could exist at the same time. This is correct for so-called “entangled” states, but it applies only for atomic level phenomena and over limited distances that preserve the coherence of the wave functions.

Einstein wrote to Schrödinger with the idea that the decay of a radioactive nucleus could be arranged to set off a large explosion. Since the moment of decay is unknown, Einstein argued that the superposition of decayed and undecayed nuclear states implies the superposition of an explosion and no explosion. Many years later, Richard Feyman made this a nuclear explosion! (What is it about some scientists?)

Einstein and Schrödinger did not like the fundamental randomness implied by quantum mechanics. They wanted to restore determinism to physics. Indeed Schrödinger’s wave equation predicts a perfectly deterministic time evolution of the wave funcion. Randomness enters only when a measurement is made and the wave function “collapses.”

Schrödinger devised a variation in which the random radioactive decay would kill a cat. Observers could not know what happened until the box is opened.The details of the tasteless experiment include:

  • a bit of radioactive material with a decay half-life likely to emit an alpha particle during a time T
  • a Geiger counter which produces an avalanche of electrons when the alpha particle passes through it
  • an electrical circuit energized by the electrons which drops a hammer
  • a flask of a deadly hydrocyanic acid gas, smashed open by the hammer.

The gas will kill the cat, but the exact time of death is unpredictable and random because of irreducible quantum indeterminacy.This thought experiment is widely misunderstood. It was meant to suggest that quantum mechanics describes the simultaneous (and obviously contradictory) existence of a live and dead cat. Here is the famous diagram with a cat both dead and alive.

What’s wrong with this picture?

Quantum mechanics claims only that the time evolution of the Schrödinger wave functions for the probability amplitudes of nuclear decay accurately predict the proportion of nuclear decays that will occur in a given time interval.More specifically, quantum mechanics provides us with the accurate prediction that if this experiment is repeated many times (the SPCA would disapprove), half of the experiments will result in dead cats.

Note that this is a problem in epistemology. What knowledge is it that quantum physics provides?

If we open the box at the time T when there is a 50% probability of an alpha particle emission, the most a physicist can know is that there is a 50% chance that the radioactive decay will have occurred and the cat will be observed as dead or dying.

If the box were opened earlier, say at T/2, there is only a 25% chance that the cat has died. Schrödinger’s superposition of live and dead cats would look like this.

If the box were opened later, say at 2T, there is only a 25% chance that the cat is still alive. Quantum mechanics is giving us only statistical information - knowledge about probabilities.

Schrödinger is simply wrong that the mixture of nuclear wave functions that accurately describes decay can be magnified to the macroscopic world to describe a similar mixture of live cat and dead cat wave functions and the simultaneous existence of live and dead cats.

What do exist simultaneously in the macroscopic world are genuine alternative possibilities for future events. This is what bothered physicists like Einstein, Schrödinger, and Max Planck who wanted a return to deterministic physics. It also bothers determinist and compatibilist philosophers who have what William James calls an “antipathy to chance.”

Until the information comes into existence, the future is indeterministic. Once information is macroscopically encoded, the past is determined.

How does information physics resolve the paradox?

As soon as the alpha particle sets off the avalanche of electrons in the Geiger counter (an irreversible event with a significant entropy increase), new information is created in the world.For example, a simple pen chart recorder attached to the Geiger counter could record the time of decay. Notice that as usual in information creation, the energy expended by a recorder increases the entropy more than the increased information decreases it, thus satisfying the second law of thermodynamics.

Even without a mechanical recorder, the cat’s death sets in motion biological processes that an equivalent, if gruesome, recording. When a dead cat is the result, a sophisticated autopsy can tell when Schrödinger’s cat died because the cat’s body is acting as an event recorder. There never is a superposition of live and dead cats.

The paradox points clearly to the Information Philosophy solution to the problem of measurement. Human observers are not required to make measurements. The cat is the observer.

In most physics measurements, the new information is captured by apparatus well before any physicist has a chance to read any dials or pointers that indicate what happened. Indeed, in today’s high-energy particle interaction experiments, the data may be captured but not fully analyzed until many days or even months of computer processing establishes what was observed. In this case, the experimental apparatus is the observer.

History of the Problem of Knowledge

March 10th, 2009

We have started a draft history of the problem of knowledge at http://www.informationphilosopher.com/knowledge/history/.

Critical comments welcomed…

In his Theaetetus, Plato told us that Socrates considered, but ultimately rejected, three possibilities for what knowledge (ἐπιστήμη) is and how we come to have it.

The first was perception (αἴσθησις). Our perceptions are “true (ἀληθῆ),” at least to us, a kind of private knowledge. But they may be dreams or illusions. (160D)

The second was true opinion or belief (δόξαν). Socrates asserts that Protagoras’ relativistic argument that “man is the measure of all things,” means “what is true is what is true for me.” But “myriad” others may properly judge your opinion false (ψευδῆ).(170D)

The third was true belief that had some reasons (λόγος) or justification (συλλογισμῶ), a rational explanation for the belief. True opinion accompanied by reason is knowledge. (δόξαν ἀληθῆ μετὰ λόγου ἐπιστήμην εἶναι) (202C)

The idea that knowledge is “justified true belief” has come down to modern times as the three-part “traditional” theory of knowledge.

Although Socrates’ “negative” dialectic never established any certain knowledge, Plato believed that Socrates’ method of inquiry (σκέπσις) was the way to achieve knowledge.

Aristotle revised his master Plato’s theory of Forms and Ideas. Although he too sought the fundamental essences of things and ideas (their Being - τὸ ὄν), for Aristotle things were a combination of form (εἴδος) and matter (ὑλῆ), and understanding how real physical things change (their Becoming) was as important as knowing their essences.

Aristotle sharpened the use of language (dialectic) and logic as our means of knowing to a level still in use today. He analyzed subject-predicate sentences and puzzled over the relationship between being or essence and the copula “is.” He elucidated the simplest rules of logic - needed for the reasoning (συλλόγος) behind justification of knowledge - the Law of Non-Contradiction and the Law of the Excluded Middle. And he developed the rules for logical inference, identifying many types of syllogism (Socrates had identified the simplest syllogism - S is M, M is P, therefore S is P).

But Aristotle went beyond reason and Platonic dialectic. He added the need for demonstration (ἀποδειξις) to discover the cause (ἀιτια) and explanation of a phenomenon. This was the beginning of empirical knowledge, as opposed to the kind of personal and subjective knowledge available directly by perception, intuition, or reflective introspection.

Aristotle identified four basic causes (material, efficient, formal, and final) and said that chance might be a fifth cause. He distinguished certain a priori knowledge, for example logic and mathematics, which was true by necessity, from the merely probable and contingent a posteriori knowledge of ethics and politics. He denied that the truth of falsity of a proposition or statement about the future entailed the necessity of a future event. Not everything happens of causal necessity, but as chance will have it.

For Aristotle, there were different methods of inquiry and different kinds of knowledge depending on the subject matter, for example knowledge of the things themselves in the external world (ontology and metaphysics) that we would call today the physical sciences, and knowledge about people (ethics and politics) that today we would call the social sciences. We might add psychology, especially the subjective and reflective knowledge of self by introspection. And although he wanted to be more empirical than Plato, he held onto some necessary truths or first principles that were self-evident. He also recognized “theses” (θέσισ)and “axioms” (ἄξιος).

And Aristotle distinguished many kinds of logical argument. When the premises are true and certain (he does not explain how this can be the case except for those that are self-evident “first principles” - ἀρχὴ or πρῶτων), and the deductive syllogism is correct so that the conclusions follow, Aristotle calls this a demonstration, the truth of it apodeictic (ἀπόδειξις), a logical proof. The resulting knowledge is demonstrative knowledge (ἀποδεικτικὲω ἐπιστήμην).

Returning to Plato here, Aristotle says that all parts of this demonstration - premises, deductions, and conclusions - are necessary. When the premises are popular opinion, their truth merely probable, the argument is dialectical. When the premises are false, the argument is sophistical, especially if used to prove anything. Much of modern epistemology feels sophistical.

Shortly after Aristotle, Pyhrro of Ellis reacted to the many methods of inquiry (σκέπσις) and their knowledge claims by denying all of them. His skeptical followers argued that happiness and serenity could be achieved by avoiding unjustified and dogmatic knowledge claims and simply follow traditional customs as a guide to life.

Plato’s Academy itself came to adopt skepticism under Arcesilaus in the third century. Arcesilaus doubted that the senses could discover truths about the physical world. Skeptics, especially Carneades, who followed Arcesilaus as leader of the Academy, denied the claims of their opponent Stoics as mere dogmatism.

Philo of Larissa, the last leader of Academic Skepticism in Athens, escaped the Mithradatic wars and went in 88 BCE to Rome where he mentored Marcus Tullius Cicero. Cicero gave us perhaps the best ancient comparison of the Stoic, Epicurean, and Skeptical schools of philosophy in his dialogue De Natura Deorum (On the Nature of the Gods).

Aenesidemus, the first-century leader of Academic skepticism in Alexandria, qualified the obvious self-referential error in the skeptical claim that nothing could be known. He encouraged a return to Pyrrho’s suspension (εποχή) of any judgment. Aenesidemus identified ten tropes or modes of knowing by perception through different senses, which he showed can be mutually inconsistent. Epistemological justification of any absolute objective knowledge is therefore impossible.

Chrysippus, the greatest of the Stoic leaders, separated the idea of necessity in certain knowledge from human actions, without denying Stoic belief in physical determinism and fate. He helped to develop propositional logic, a language advance on Aristotle’s predicate logic that was revived in the 20th century as a propositional calculus.

Chrysippus saw logic as the core of a divine reason that rules the universe. The Laws of Nature are synonymous with the Laws of God, since Stoics identified God with Nature. In his time, Chrysippus’ logic was considered superior to Aristotle’s.


“What can I know with certainty?” asked René Descartes. What is it that cannot logically be doubted? Starting with his famous “Cogito, ergo sum,” Descartes said he could not doubt his own existence, then - since “God is no deceiver” - he could not be wrong about his perceptions. This is despite Plato, who knew perceptions could be illusions, like the stick appearing bent in the water.

Descartes shifted the emphasis of knowledge from the external world to his internal thoughts, and began an effort to find indubitable truths as foundations for all knowledge. Descartes’ introspective “quest for certainty” changed the focus of problem of knowledge to what 20th-century philosophy would come to call “foundationalism and “internalism“.”

Even if Descartes could have arrived at subjective knowledge that he personally could not doubt, such knowledge would be inaccessible to others. And others would be properly skeptical of his egocentric knowledge claims.

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