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Philosophers

Mortimer Adler
Rogers Albritton
Alexander of Aphrodisias
Samuel Alexander
William Alston
Anaximander
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Anselm
Louise Antony
Thomas Aquinas
Aristotle
David Armstrong
Harald Atmanspacher
Robert Audi
Augustine
J.L.Austin
A.J.Ayer
Alexander Bain
Mark Balaguer
Jeffrey Barrett
William Barrett
William Belsham
Henri Bergson
George Berkeley
Isaiah Berlin
Richard J. Bernstein
Bernard Berofsky
Robert Bishop
Max Black
Susanne Bobzien
Emil du Bois-Reymond
Hilary Bok
Laurence BonJour
George Boole
Émile Boutroux
F.H.Bradley
C.D.Broad
Michael Burke
Lawrence Cahoone
C.A.Campbell
Joseph Keim Campbell
Rudolf Carnap
Carneades
Nancy Cartwright
Gregg Caruso
Ernst Cassirer
David Chalmers
Roderick Chisholm
Chrysippus
Cicero
Randolph Clarke
Samuel Clarke
Anthony Collins
Antonella Corradini
Diodorus Cronus
Jonathan Dancy
Donald Davidson
Mario De Caro
Democritus
Daniel Dennett
Jacques Derrida
René Descartes
Richard Double
Fred Dretske
John Dupré
John Earman
Laura Waddell Ekstrom
Epictetus
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Herbert Feigl
Arthur Fine
John Martin Fischer
Frederic Fitch
Owen Flanagan
Luciano Floridi
Philippa Foot
Alfred Fouilleé
Harry Frankfurt
Richard L. Franklin
Bas van Fraassen
Michael Frede
Gottlob Frege
Peter Geach
Edmund Gettier
Carl Ginet
Alvin Goldman
Gorgias
Nicholas St. John Green
H.Paul Grice
Ian Hacking
Ishtiyaque Haji
Stuart Hampshire
W.F.R.Hardie
Sam Harris
William Hasker
R.M.Hare
Georg W.F. Hegel
Martin Heidegger
Heraclitus
R.E.Hobart
Thomas Hobbes
David Hodgson
Shadsworth Hodgson
Baron d'Holbach
Ted Honderich
Pamela Huby
David Hume
Ferenc Huoranszki
Frank Jackson
William James
Lord Kames
Robert Kane
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Tomis Kapitan
Walter Kaufmann
Jaegwon Kim
William King
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Christine Korsgaard
Saul Kripke
Thomas Kuhn
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Keith Lehrer
Gottfried Leibniz
Jules Lequyer
Leucippus
Michael Levin
Joseph Levine
George Henry Lewes
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David Lewis
Peter Lipton
C. Lloyd Morgan
John Locke
Michael Lockwood
E. Jonathan Lowe
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Lucretius
Alasdair MacIntyre
Ruth Barcan Marcus
James Martineau
Storrs McCall
Hugh McCann
Colin McGinn
Michael McKenna
Brian McLaughlin
John McTaggart
Paul E. Meehl
Uwe Meixner
Alfred Mele
Trenton Merricks
John Stuart Mill
Dickinson Miller
G.E.Moore
Thomas Nagel
Otto Neurath
Friedrich Nietzsche
John Norton
P.H.Nowell-Smith
Robert Nozick
William of Ockham
Timothy O'Connor
Parmenides
David F. Pears
Charles Sanders Peirce
Derk Pereboom
Steven Pinker
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Karl Popper
Porphyry
Huw Price
H.A.Prichard
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Hilary Putnam
Willard van Orman Quine
Frank Ramsey
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Michael Rea
Thomas Reid
Charles Renouvier
Nicholas Rescher
C.W.Rietdijk
Richard Rorty
Josiah Royce
Bertrand Russell
Paul Russell
Gilbert Ryle
Jean-Paul Sartre
Kenneth Sayre
T.M.Scanlon
Moritz Schlick
Arthur Schopenhauer
John Searle
Wilfrid Sellars
Alan Sidelle
Ted Sider
Henry Sidgwick
Walter Sinnott-Armstrong
J.J.C.Smart
Saul Smilansky
Michael Smith
Baruch Spinoza
L. Susan Stebbing
Isabelle Stengers
George F. Stout
Galen Strawson
Peter Strawson
Eleonore Stump
Francisco Suárez
Richard Taylor
Kevin Timpe
Mark Twain
Peter Unger
Peter van Inwagen
Manuel Vargas
John Venn
Kadri Vihvelin
Voltaire
G.H. von Wright
David Foster Wallace
R. Jay Wallace
W.G.Ward
Ted Warfield
Roy Weatherford
C.F. von Weizsäcker
William Whewell
Alfred North Whitehead
David Widerker
David Wiggins
Bernard Williams
Timothy Williamson
Ludwig Wittgenstein
Susan Wolf

Scientists

David Albert
Michael Arbib
Walter Baade
Bernard Baars
Jeffrey Bada
Leslie Ballentine
Gregory Bateson
John S. Bell
Mara Beller
Charles Bennett
Ludwig von Bertalanffy
Susan Blackmore
Margaret Boden
David Bohm
Niels Bohr
Ludwig Boltzmann
Emile Borel
Max Born
Satyendra Nath Bose
Walther Bothe
Jean Bricmont
Hans Briegel
Leon Brillouin
Stephen Brush
Henry Thomas Buckle
S. H. Burbury
Melvin Calvin
Donald Campbell
Sadi Carnot
Anthony Cashmore
Eric Chaisson
Gregory Chaitin
Jean-Pierre Changeux
Rudolf Clausius
Arthur Holly Compton
John Conway
Jerry Coyne
John Cramer
Francis Crick
E. P. Culverwell
Antonio Damasio
Olivier Darrigol
Charles Darwin
Richard Dawkins
Terrence Deacon
Lüder Deecke
Richard Dedekind
Louis de Broglie
Stanislas Dehaene
Max Delbrück
Abraham de Moivre
Paul Dirac
Hans Driesch
John Eccles
Arthur Stanley Eddington
Gerald Edelman
Paul Ehrenfest
Manfred Eigen
Albert Einstein
George F. R. Ellis
Hugh Everett, III
Franz Exner
Richard Feynman
R. A. Fisher
David Foster
Joseph Fourier
Philipp Frank
Steven Frautschi
Edward Fredkin
Lila Gatlin
Michael Gazzaniga
Nicholas Georgescu-Roegen
GianCarlo Ghirardi
J. Willard Gibbs
Nicolas Gisin
Paul Glimcher
Thomas Gold
A. O. Gomes
Brian Goodwin
Joshua Greene
Dirk ter Haar
Jacques Hadamard
Mark Hadley
Patrick Haggard
J. B. S. Haldane
Stuart Hameroff
Augustin Hamon
Sam Harris
Ralph Hartley
Hyman Hartman
John-Dylan Haynes
Donald Hebb
Martin Heisenberg
Werner Heisenberg
John Herschel
Basil Hiley
Art Hobson
Jesper Hoffmeyer
Don Howard
William Stanley Jevons
Roman Jakobson
E. T. Jaynes
Pascual Jordan
Ruth E. Kastner
Stuart Kauffman
Martin J. Klein
William R. Klemm
Christof Koch
Simon Kochen
Hans Kornhuber
Stephen Kosslyn
Daniel Koshland
Ladislav Kovàč
Leopold Kronecker
Rolf Landauer
Alfred Landé
Pierre-Simon Laplace
David Layzer
Joseph LeDoux
Gilbert Lewis
Benjamin Libet
David Lindley
Seth Lloyd
Hendrik Lorentz
Josef Loschmidt
Ernst Mach
Donald MacKay
Henry Margenau
Owen Maroney
Humberto Maturana
James Clerk Maxwell
Ernst Mayr
John McCarthy
Warren McCulloch
N. David Mermin
George Miller
Stanley Miller
Ulrich Mohrhoff
Jacques Monod
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Alexander Oparin
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Howard Pattee
Wolfgang Pauli
Massimo Pauri
Roger Penrose
Steven Pinker
Colin Pittendrigh
Max Planck
Susan Pockett
Henri Poincaré
Daniel Pollen
Ilya Prigogine
Hans Primas
Henry Quastler
Adolphe Quételet
Lord Rayleigh
Jürgen Renn
Juan Roederer
Jerome Rothstein
David Ruelle
Tilman Sauer
Jürgen Schmidhuber
Erwin Schrödinger
Aaron Schurger
Sebastian Seung
Thomas Sebeok
Claude Shannon
David Shiang
Abner Shimony
Herbert Simon
Dean Keith Simonton
B. F. Skinner
Lee Smolin
Ray Solomonoff
Roger Sperry
John Stachel
Henry Stapp
Tom Stonier
Antoine Suarez
Leo Szilard
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Libb Thims
William Thomson (Kelvin)
Giulio Tononi
Peter Tse
Francisco Varela
Vlatko Vedral
Mikhail Volkenstein
Heinz von Foerster
Richard von Mises
John von Neumann
Jakob von Uexküll
John B. Watson
Daniel Wegner
Steven Weinberg
Paul A. Weiss
Herman Weyl
John Wheeler
Wilhelm Wien
Norbert Wiener
Eugene Wigner
E. O. Wilson
Stephen Wolfram
H. Dieter Zeh
Ernst Zermelo
Wojciech Zurek
Konrad Zuse
Fritz Zwicky
 
Roderick Chisholm

Roderick Chisholm studied at Harvard but was strongly opposed to behaviorist analytic philosophers like Willard van Orman Quine. His major work was titled Person and Object to draw the contrast with analytic language philosophy implicit in Quine's famous Word and Object.
Chisholm was a libertarian who distinguished "agent causation" from "event-causation" (see his Freedom and Action), which is a major distinction made by current incompatibilist philosophers. Late in life he recanted this distinction.
"In earlier writings on this topic, I had contrasted agent causation with event causation and had suggested that "causation by agents" could not be reduced to "causation by events." I now believe that that suggestion was a mistake. What I had called agent causation is a subspecies of event causation. My concern in the present study is to note the specific differences by reference to which agent causation can be distinguished from other types of event causation." ("Agents, Causes, and Events: The Problem of Free Will," in Agents, Causes, and Events: Essays on Indeterminism and Free Will. , ed. T. O'Connor, 1995)
In his 1964 Lindley Lecture he saw free will as a metaphysical problem. He asserts that a man who performs an act is completely free and uncaused, a causa sui.
The metaphysical problem of human freedom might be summarized in the following way: "Human beings are responsible agents; but this fact appears to conflict with a deterministic view of human action (the view that every event that is involved in an act is caused by some other event); and it also appears to conflict with an indeterministic view of human action (the view that the act, or some event that is essential to the act, is not caused at all)." To solve the problem, I believe, we must make somewhat far-reaching assumptions about the self of the agent — about the man who performs the act.

Perhaps it is needless to remark that, in all likelihood, it is impossible to say anything significant about this ancient problem that has not been said before.

Chisholm says the agent must be able to perform an act and also able not to perform it, to do otherwise.
Let us consider some deed, or misdeed, that may be attributed to a responsible agent: one man, say, shot another. If the man was responsible for what he did, then, I would urge, what was to happen at the time of the shooting was something that was entirely up to the man himself. There was a moment at which it was true, both that he could have fired the shot and also that he could have refrained from firing it. And if this is so, then, even though he did fire it, he could have done something else instead. (He didn't find himself firing the shot "against his will," as we say.) I think we can say, more generally, then, that if a man is responsible for a certain event or a certain state of affairs (in our example, the shooting of another man), then that event or state of affairs was brought about by some act of his, and the act was something that was in his power either to perform or not to perform.
Chisholm talks about others who might control the agent's mind, by hypnosis for example, which anticipates Harry Frankfurt's mind controllers.
But now, if the act which he did perform was an act that was also in his power not to perform, then it could not have been caused or determined by any event that was not itself within his power either to bring about or not to bring about. For example, if what we say he did was really something that was brought about by a second man, one who forced his hand upon the trigger, say, or who, by means of hypnosis, compelled him to perform the act, then, since the act was caused by the second man, it was nothing that was within the power of the first man to prevent. And precisely the same thing is true, I think, if instead of referring to a second man who compelled the first one, we speak instead of the desires and beliefs which the first man happens to have had. For if what we say he did was really something that was brought about by his own beliefs and desires, if these beliefs and desires in the particular situation in which he happened to have found himself caused him to do just what it was that we say he did do, then, since they caused it, he was unable to do anything other than just what he did do. It makes no difference whether the cause of the deed was internal or external: if the cause was some state or event for which the man himself was not responsible, then he was not responsible for what we have been mistakenly calling his act. If a flood caused the poorly structured dam to break, then, given the flood and the constitution of the dam, the break, we may say, had to occur and nothing could have happened in its place. And if the flood of desire caused the weak-willed man to give in, then he, too, had to do just what it was that he did do and he was no more responsible than was the dam for the results that followed.
Chisholm reprises the Determinism Objection and Randomness Objection in the standard argument against free will.
the ascription of responsibility conflicts with a deterministic view of action. Perhaps there is less need to argue that the ascription of responsibility also conflicts with an indeterministic view of action — with the view that the act, or some event that is essential to the act, is not caused at all.

If the act — the firing of the shot — was not caused at all, if it was fortuitous or capricious, happening so to speak "out of the blue," then, presumably, no one — and nothing — was responsible for the act. Our conception of action, therefore, should be neither deterministic nor indeterministic. Is there any other possibility?

We must not say that every event involved in the act is caused by some other event, and we must not say that the act is something that is not caused at all. The possibility that remains, therefore, is this: We should say that at least one of the events that are involved in the act is caused, not by any other events, but by something else instead. And this something else can only be the agent — the man.

The origin of
"agent causation"
If there is an event that is caused, not by other events, but by the man, then there are some events involved in the act that are not caused by other events. But if the event in question is caused by the man, then it is caused and we are not committed to saying that there is something involved in the act that is not caused at all.
For Teachers
For Scholars
Responisiblity and Avoidability
From Determinism and Freedom in the Age of Modern Science, Hook, 1958.
Edwards and Hospers hold that there is an important sense in which we may be said not to be morally responsible for any of our acts or choices. I propose the following as an explicit formulation of their reasoning:
1. If a choice is one we could not have avoided making, then it is one for which we are not morally responsible.

2. If we make a choice under conditions such that, given those conditions, it is (causally but not logically) impossible for the choice not to be made, then the choice is one we could not have avoided making.

3. Every event occurs under conditions such that, given those conditions, it is (causally but not logically) impossible for that event not to occur.

4. The making of a choice is the occurrence of an event.

5. We are not morally responsible for any of our choices.

If we wish to reject the conclusion (5) — and for most of us (5) is difficult to accept — we must reject at least one of the premises.

Premise (1), I think, may be interpreted as a logical truth. If a man is responsible for what he did, then we may say, "He could have done otherwise." And if we may say, "He couldn't help it," then he is not responsible for what he did.

Many philosophers would deny (2), substituting a weaker account of avoidability. A choice is avoidable, they might say, provided only it is such that, if the agent had reflected further, or had reflected on certain things on which in fact he did not reflect, he would not have made the choice. To say of a choice that it "could not have been avoided," in accordance with this account, would be to say that, even if the agent had reflected further, on anything you like, he would all the same have made the choice. But such conditional accounts of avoidability ("An act or choice is avoidable provided only it is such that, if the agent were to do so-and-so, the act or choice would not occur") usually have this serious defect: the antecedent clause ("if the agent were to do so-and-so") refers to some act or choice, or to the failure to perform some act or to make some choice; hence we may ask, concerning the occurrence or nonoccurrence of this act or choice, whether or not it is avoidable. Thus one who accepted (5) could say that, if the agent's failure to reflect further was itself unavoidable, his choice was also unavoidable. And no such conditional account of avoidability seems adequate to the use of "avoidable" and "unavoidable" in questions and statements such as these.

If we accept a conditional account of avoidability, we may be tempted to say, of course, that it would be a misuse of "avoidable" to ask whether the nonoccurrence of the antecedent event ("the agent does so-and-so") is avoidable. But the philosopher who accepts (5) may well insist that, since the antecedent clause refers to an act or a choice, the use of "avoidable" in question is not a misuse.

What, then, if we were to deny (3)? Suppose that some of our choices do not satisfy (3) — that when they are made they are not made under any conditions such that it is (causally) impossible (though logically possible) for them not to be made. If there are choices of this sort, then they are merely fortuitous or capricious. And if they are merely fortuitous or capricious, if they "just happen," then, I think, we may say with Blanchard that we are not morally responsible for them. Hence denying (3) is not the way to avoid (5).

We seem confronted, then, with a dilemma: either our choices have sufficient causal conditions or they do not; if they do have sufficient causal conditions they are not avoidable; if they do not, they are fortuitous or capricious; and therefore, since our choices are either unavoidable or fortuitous, we are not morally responsible for them.

There are philosophers who believe that by denying the rather strange-sounding premise (4) we can escape the dilemma. Insisting on something like "the primacy of practical reason," they would say that since we are certain that (5) is false we must construct a metaphysical theory about the self, a theory denying (4) and enabling us to reconcile (3) and the denial of (5). I say "metaphysical" because it seems to be necessary for the theory to replace (4) by sentences using such terms as "active power," "the autonomy of the will," "prime mover," or "higher levels of causality"—terms designating something to which we apparently need not refer when expressing the conclusions of physics and the natural sciences. But I believe we cannot know whether such theories enable us to escape our dilemma. For it seems impossible to conceive what the relation is that, according to these theories, holds between the "will," "self," "mover," or "active power," on the one hand, and the bodily events this power is supposed to control, on the other—the relation between the "activities" of the self and the events described by physics.

I am dissatisfied, then, with what philosophers have proposed as alternatives to premises (1) through (4) above, but since I feel certain that (5) is false I also feel certain that at least one of the premises is false.

Agents, Causes, and Events: The Problem of Free Will
From Agents, Causes, and Events: Essays on Indeterminism and Free Will, O'Connor, Oxford, 1995.
In earlier writings on this topic, I had contrasted agent causation with event causation and had suggested that "causation by agents" could not be reduced to "causation by events." I now believe that that suggestion was a mistake. What I had called agent causation is a subspecies of event causation. My concern in the present study is to note the specific differences by reference to which agent causation can be distinguished from other types of event causation.

We cannot hope to succeed in this task unless we try to cope with the very difficult concept of causation — event causation. And this means, in turn, that we should have a clear conception of the ontological status of events and, in particular, of their relation to attributes or properties and of their relation to individual things.

We begin with the ontological question.

The Nature of States

Events are here construed as being a subspecies of states. The concept of a state is taken as undefined, but it can be clarified in several different ways.

Suppose that you are reading. Then the following entities are involved: (1) that contingent substance which is yourself; (2) that noncontingent thing, which is the property of reading; and (3) that contingent state which is you reading. It will be useful to say that you are the substrate of that state and that the property of reading is the content.

We introduce the following twofold definitional abbreviation:

D1 x is the substrate of the state y, and z is the content of the state y
= Df. y is that state which is x-exemplifying-the-property z.
We may now formulate a general principle, telling us that every state is necessarily such that it has the substrate that it has.
A1 For every x, if there exists the state, x-being-F, then x-being-F is necessarily such that it is a state of x.
From the fact that that state, which is you reading something, is necessarily such that it is a state of you, it does not follow, of course, that you are necessarily such that you are reading something.

Higher Order States and the Concept of an Event

We have assumed that, for every x there is the state x-being-F, if and only if x is F. Our assumptions imply, therefore, that there are infinitely many states. They also imply that there is an infinite hierarchy of states. The hierarchy may be illustrated this way:

(1) x-being-F

(2) (x-being-F)-being-G

(3) [ (x-being-F)-being-G]-being-H

An instance of (1) would be Jones walking. An instance of (2) would be (Jones walking) being strenuous. And an instance of (3) would be (Jones walking being strenuous) contributing causally to (Jones being tired).

We could say that a first-order state is a state that has a non-state as its substrate. Second-order states will have first-order states as their substrates. Second-order states are illustrated by those states that consist of one first-order state contributing causally to another first-order state.

In order to say what an event is, we refer to the concepts of a first-order state and of a second-order state:

D2 x is a first-order state = Df. x is a state of a substance.
D3 x is a second-order state = Df. x is a state of a first-order state.
We are now in a position to characterize the concept of an event.
D4 x is an event = Df. x is either a first-order state or a second-order state.
In some of his earlier writings on the concept of an event, Jaegwon Kim suggests a theory according to which all events would be first-order states. Such a restriction provides no place for those paradigmatic events that consist of one event contributing causally to the occurrence of another event. Examples are the striking of a match contributing causally to the burning of a piece of paper; the treatment of a patient contributing causally to the patient being cured; and the rush of the sea contributing causally to the destruction of the pier. Here we have second-order events that relate first-order events.

Events and the Concept of Causation

Causation cannot be analyzed by reference to the "constant conjunction" of events. Most investigators agree that the concept of causation is nomological. It presupposes the concept of physical necessity, a concept that is usually expressed by reference to "laws of nature."

How are we to interpret "It is a law of nature that if A occurs then B occurs"? Speaking somewhat loosely, we may say that the reference to "a law of nature" is intended to call attention to two types of necessity: that imposed "by logic" and that imposed "by nature." How, then, might one distinguish "laws of logic" from "laws of nature"?

If it is "a law of logic that if A then B," then conceivably a rational being could know a priori, just by reflection, that it must be the case that if A occurs, then B occurs. Some philosophers would say: "Every possible world is such that, if A occurs in that world, then B also occurs in that world." But rational reflection does not suffice to tell us what the laws of nature are.

It is possible that there occurs a conjunction of events A that taken together will constitute a sufficient causal condition of B without logically implying B. The states that would make up such a conjunction are "partial causes," or "contributing causes," of B. One of the most common errors to which discussions of freedom and causation are subject is that of confusing partial or contributing causes with sufficient causal conditions. The contributing causes that make up a sufficient causal condition of an event B need not themselves be sufficient causal conditions of B.

Let us consider an example.

We will define the concept of a sufficient causal condition, not by reference to a set of states or events, but by reference to those properties we have called the contents of the states or events. Thus we may have:

D5 S is a sufficient causal condition of E = Df. S is a set of properties such that the conjunction of its members does not logically imply E; and it is law of nature that, if all the members of S are exemplified by the same thing at the same time, then E will be exemplified either at that time or later.
In referring in the definition to the properties of the thing that undergoes the effect, we do not thereby exclude the properties of other things that happen to be in the environment of the thing that undergoes the effect. The piece of wood bums in part because of the presence of oxygen in the environment. But in that case one of the properties of the piece of wood is that it happens to be in an environment in which oxygen is present.

The realistic view of properties, here presupposed, implies that, for any two properties, P and Q, there is also the property, P-and-Q. It also implies that, for any two properties, there is also the property of having those two properties.

Why say that the effect of the sufficient causal conditions must be exemplified either at the same time as or later than the members of that condition? To say this is simply to say that the effect not precede its cause. The effect, in other words, will not be exemplified before the members of any sufficient causal condition of that effect are exemplified.

We next single out the concept of a minimal sufficient causal condition:

D6 C is a minimal sufficient causal condition of E = Df. C is a sufficient causal condition of E; and no subset of C is a sufficient causal condition of E.
We may speak of a "subset" of a sufficient causal condition, since such a condition, according to our previous definition, is a set of properties.

If your action is a part or member of a minimal sufficient causal condition of an event, then, clearly, the action contributes causally to that event. It is a partial cause of the event (which is not to say, of course, that it is the cause of that event).

D7 That state which is x-being-C contributes causally to that state which is y-being-E = Df. C is a member of a set S of properties that are all exemplified by x at the same time, and S is a minimal sufficient causal condition of E.
What of those situations where the effect is overdetermined? Two marksmen shoot at the victim; they are each successful and the two shots do their work at precisely the same time. Given the one shot, the other shot was not needed to bring about the effect. Both shots, therefore, would not be a part of a minimal sufficient causal condition; yet each contributed. We need not, therefore, revise the definition of a minimal sufficient causal condition.

Freedom and Indeterminism

The concept of being able to undertake is somewhat more broad than that of being free to undertake. It is only when you "could have done otherwise" that your undertaking may be said to be free.

I have not used the expression "free will," for the question of free dom, as John Locke said, is not the question "whether the will be free"; it is the question "whether a man be free."' The question is whether the agent is free to undertake any of those things he does not undertake and whether he is free not to undertake any of those things he does undertake.

Consider the question: Is the person free to bring about what it is that he or she undertakes to bring about? This is not the question with which we have been concerned. But many would have us think that it is. Many philosophers and theologians whose views may seem unduly to curtail our freedom have tried to soften this consequence by redefining the problem of freedom. Thus Jonathan Edwards, using the the verb "to will" where I have used "to undertake," would have us think that the question is this: Is the person free to do what it is that he wills to do? This question is not difficult to deal with. We may answer it affirmatively by pointing out that on occasion people do do the things that they will to do; that is to say, they do bring about what it is that they undertake to bring about. Those who put this question are asking about what Thomas Aquinas called the actus voluntatis imperatus. They are simply asking: Do we ever bring about the things we intend to bring about? But our question might be put by asking: Are we free to will the things that we do will? Thus they have tried to bypass the more fundamental question of the freedom of the .

Objection: "An undertaking that has no sufficient causal condition is completely arbitrary; it is simply a random event for which the agent has no responsibility at all. Hence your proposal implies that we are really not responsible for anything that we do."

From the fact that an undertaking has no sufficient causal condition, it does not at all follow that it is "completely arbitrary" or "random." Nor does it follow that the person has no responsibility for that undertaking. For even if the undertaking has no sufficient causal condition, there are several ways in which other events may contribute causally to that undertaking.

Suppose you are in the middle of a room that has many exits and you hear someone screaming "Fire!" Your hearing the scream may complete a sufficient causal condition for your undertaking to leave the room. But, so far as each particular exit is concerned, there may be no sufficient causal condition for your undertaking to leave by that exit rather than by any of the others. Suppose, then, that you undertake to leave by the exit that is north of you and that you succeed. In this case, your undertaking to leave may have a sufficient causal condition but your undertaking to leave by the northern exit may not. The latter event, although it has no sufficient causal condition, was such that the shout of "Fire!" contributed causally to it.

And there are other ways of contributing causally to an event that has no sufficient causal condition.

An automobile driver with a long trip ahead of him interrupts the trip to get something to eat. of the two available restaurants, he chooses the one that serves alcoholic beverages, not with the intention of getting a drink, but because he thinks the food is better there. He knows full well, however, that he could easily succumb to the temptation to have a drink. Suppose now that he does succumb to that temptation and endeavors to have a drink. Even if this endeavor has no sufficient causal condition, the driver's beliefs, motives, and desires contributed causally to its occurrence. And if the results of that endeavor should be still more drinks and a subsequent serious accident, then one would be completely justified in holding him responsible for that free endeavor and for everything to which it led.

If an agent's undertaking contributes causally to a certain event, then he, the agent, may also be said to contribute causally to that event. Agent causation need not be construed as an alternative to event causation; we may think of it as a subspecies of event causation. For "Agent S contributed causally to so-and-so" may be construed as: "There was a certain thing that agent S undertook and his undertaking that thing contributed causally to the occurrence of so-and-so."


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