Philosophers
Mortimer Adler Rogers Albritton Alexander of Aphrodisias Samuel Alexander William Alston Anaximander G.E.M.Anscombe 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 Daniel Boyd 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 Tom Clark 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 Epicurus Austin Farrer 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 Immanuel Kant Tomis Kapitan Walter Kaufmann Jaegwon Kim William King Hilary Kornblith Christine Korsgaard Saul Kripke Thomas Kuhn Andrea Lavazza Christoph Lehner Keith Lehrer Gottfried Leibniz Jules Lequyer Leucippus Michael Levin Joseph Levine George Henry Lewes C.I.Lewis David Lewis Peter Lipton C. Lloyd Morgan John Locke Michael Lockwood Arthur O. Lovejoy E. Jonathan Lowe John R. Lucas Lucretius Alasdair MacIntyre Ruth Barcan Marcus Tim Maudlin James Martineau Nicholas Maxwell 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 U.T.Place Plato Karl Popper Porphyry Huw Price H.A.Prichard Protagoras Hilary Putnam Willard van Orman Quine Frank Ramsey Ayn Rand 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 John Duns Scotus Arthur Schopenhauer John Searle Wilfrid Sellars David Shiang Alan Sidelle Ted Sider Henry Sidgwick Walter Sinnott-Armstrong Peter Slezak 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 Marcello Barbieri Gregory Bateson Horace Barlow 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 Bernard d'Espagnat 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 Benjamin Gal-Or Howard Gardner Lila Gatlin Michael Gazzaniga Nicholas Georgescu-Roegen GianCarlo Ghirardi J. Willard Gibbs James J. Gibson 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 Jeff Hawkins John-Dylan Haynes Donald Hebb Martin Heisenberg Werner Heisenberg John Herschel Basil Hiley Art Hobson Jesper Hoffmeyer Don Howard John H. Jackson William Stanley Jevons Roman Jakobson E. T. Jaynes Pascual Jordan Eric Kandel 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 Karl Lashley David Layzer Joseph LeDoux Gerald Lettvin Gilbert Lewis Benjamin Libet David Lindley Seth Lloyd Werner Loewenstein Hendrik Lorentz Josef Loschmidt Alfred Lotka Ernst Mach Donald MacKay Henry Margenau Owen Maroney David Marr Humberto Maturana James Clerk Maxwell Ernst Mayr John McCarthy Warren McCulloch N. David Mermin George Miller Stanley Miller Ulrich Mohrhoff Jacques Monod Vernon Mountcastle Emmy Noether Donald Norman Alexander Oparin Abraham Pais Howard Pattee Wolfgang Pauli Massimo Pauri Wilder Penfield Roger Penrose Steven Pinker Colin Pittendrigh Walter Pitts Max Planck Susan Pockett Henri Poincaré Daniel Pollen Ilya Prigogine Hans Primas Zenon Pylyshyn Henry Quastler Adolphe Quételet Pasco Rakic Nicolas Rashevsky Lord Rayleigh Frederick Reif Jürgen Renn Giacomo Rizzolati A.A. Roback Emil Roduner Juan Roederer Jerome Rothstein David Ruelle David Rumelhart Robert Sapolsky Tilman Sauer Ferdinand de Saussure Jürgen Schmidhuber Erwin Schrödinger Aaron Schurger Sebastian Seung Thomas Sebeok Franco Selleri Claude Shannon Charles Sherrington Abner Shimony Herbert Simon Dean Keith Simonton Edmund Sinnott B. F. Skinner Lee Smolin Ray Solomonoff Roger Sperry John Stachel Henry Stapp Tom Stonier Antoine Suarez Leo Szilard Max Tegmark Teilhard de Chardin Libb Thims William Thomson (Kelvin) Richard Tolman Giulio Tononi Peter Tse Alan Turing C. S. Unnikrishnan Francisco Varela Vlatko Vedral Vladimir Vernadsky Mikhail Volkenstein Heinz von Foerster Richard von Mises John von Neumann Jakob von Uexküll C. H. Waddington John B. Watson Daniel Wegner Steven Weinberg Paul A. Weiss Herman Weyl John Wheeler Jeffrey Wicken Wilhelm Wien Norbert Wiener Eugene Wigner E. O. Wilson Günther Witzany Stephen Wolfram H. Dieter Zeh Semir Zeki Ernst Zermelo Wojciech Zurek Konrad Zuse Fritz Zwicky Presentations Biosemiotics Free Will Mental Causation James Symposium |
William Hasker
William Hasker is a philosopher trained in theology and interested in problems of philosophy of mind. His theory of "Emergent Dualism" argues that the emergence of the mind from the brain provides a solution to the mind-body problem. He says:
While emergent dualism shares with (nonreductive) materialism the claim that ordinary matter contains within itself the potentiality for consciousness, it actually goes some way beyond materialism in the powers it attributes to matter. For standard materialism, the closure of the physical guarantees that consciousness does not "make a difference" to the way matter itself operates; all of the brain-processes are given a mechanistic explanation which would be just the same whether or not the processes were accompanied by conscious experience.
Free Will and Agency
Hasker analyzes the problem of free will and concludes that determinism is very likely not the case. Indeed, determinism is an emergent property of large numbers of particles treated statistically.
Empirically speaking, there is not much of a case for determinism. The only direct empirical evidence for determinism is the existence of consistent, reliable, and accurate predictions of individual events.1 In some fields of science we do have such predictions to a remarkable degree, but in others they are conspicuously absent. To be sure, the failure of prediction in many areas of science can be explained in ways that are consistent with an underlying determinism. Perhaps the causal factors involved are simply too complex for our analysis - or (as chaos theory has shown) long-range outcomes may depend with incredible sensitivity on minute (and undetectable) differences in initial conditions. And the indeterminism of quantum mechanics, even if it is ultimate and not merely apparent, can in many contexts be ignored as making no difference to the behavior of macroscopic objects. So deterministic theories can be maintained in the absence of reliable, accurate, predictions — but why should they be maintained? Why not admit that determinism just does not apply to certain aspects of the world.Hasker criticizes Harry Frankfurt's attempt to deny the existence of alternative possibilities for action. I will proceed, then, on the assumption that we do have free will in the libertarian sense, and that the principle of alternative possibilities is intact. Our concern in this section and the next will be with the other, perhaps even more difficult, part of the free will problem: the task of giving an illuminating positive characterization of the nature of the act of free choice.Hasker then discusses the two-stage models of free will developed in the 1970's by Daniel Dennett and Robert Kane. He begins with Dennett: In approaching this problem, we shall look for help to an unexpected source, namely Daniel Dennett's essay "On Giving Libertarians What They Say They Want." In this essay Dennett sketches out, though he does not fully endorse, a strategy for explaining libertarian free will. Following a suggestion from David Wiggins, he undertakes to show that an action might be "random" in the sense of causally undetermined, without being random in the sense of pointless or arbitrary.Note that this argument had been made by Karl Popper in 1977, who said "A choice process may be a selection process, and the selection may be from some repertoire of random events, without being random in its turn. This seems to me to offer a promising solution to one of our most vexing problems, and one by downward causation." The reason Dennett is an "unexpected source" is that Dennett is the very model of a compatibilist and determinist (with the exception that he does not deny moral responsibility, as do most determinists). Hasker is concerned that Dennett as a source of a libertarian free will model might motivate questions about its adequacy. He says: Hasker then turns to Kane's 1984 work. Kane says he developed his two-stage model earlier than Dennett, but actually this is because both Dennett and Kane knew of some earlier models (besides Wiggins' suggestion, they include Henri Poincaré, Jacques Hadamard, Arthur Holly Compton, and Popper). As we've noted, Dennett does not fully endorse this model, but he does feel it has impressive merits. Rather than linger over these, however, I wish to call attention to a striking fact: Dennett's model for free will coincides, in its most important features, with that proposed in one of the best and most insightful books of recent years advocating libertarian free will. I am referring to Robert Kane's Free Will and Values. In virtue of this similarity, I shall refer to their common doctrine as DK-libertarianism. One nontrivial difficulty for DK-libertarianism is that it requires one to postulate within the brain a process by which quantum-level indeterminacy is amplified to produce macroscopic effects. While this notion has seemed attractive to many, the general trend of brain science seems to be unfavorable to it, though the issue is not yet closed. So this assumption clearly represents a significant empirical burden for DK-libertarianism to carry. Quite apart from this, the theory is hardly without difficulties. Kane observes that some libertarians will find his theory inadequate because it does not permit "total rational control" for the free agent. It is clear enough what he has in mind. Consider a situation in which one comes to make a decision in which the reasons on both sides are about equally balanced, so that neither set of reasons necessitates a particular outcome. The decision actually made, in this case, is the product of chance — of the internal "randomizing device" about which we learned from Dennett. Is the outcome then merely the result of chance?Hasker is right that a subtle combination of causality and chance is what is needed in a plausible two-stage model of libertarian free will. The model depends on where indeterminism fits. Most two-stage_models of free will locate indeterminism in the early deliberative stage, in order to generate alternative possibilities that are not pre-determined. The reason that Dennett did not endorse his model is because he is a determinist. The other place that indeterminism might be involved is in the decision itself. This would make the decision random, except for Kane's defense of his "torn decisions." Kane's "torn decisions" are often between a moral choice and an expedient choice. These are the kinds of decisions that Aristotle thought of as character building and Kane calls "Self-Forming Actions" or SFAs. When this is a moral decision, Kane makes it the basis for his SFAs that provide "ultimate responsibility" (UR). While Hasker regards the soul as an "emergent" substance, he says that it is dependent upon the body from which it emerges for its existence. And he is an advocate for "Open Theism." The omniscience of God does not extend to things in the future that have not yet happened. |