Online research in philosophy

Helen Beebee has recently argued that David Lewis’s account of compatibilism, so-called local miracle compatibilism (LMC), allows for the possibility that agents in deterministic worlds have the ability to break or cause the breaking of a law of nature. Because Lewis’s LMC allows for this consequence, Beebee claims that LMC is untenable and subsequently that Lewis’s criticism of van Inwagen’s Consequence Argument for incompatibilism is substantially weakened. I review Beebee’s argument against Lewis’s thesis and argue that Beebee has not refuted LMC and concomitantly has not demonstrated that Lewis’s criticism of the Consequence Argument fails.

In a book I once wrote about free will, I contended that the best and most important argument for the incompatibility of free will and determinism was “the Consequence Argument.” I gave the following brief sketch of the Consequence Argument as a prelude to several more careful and detailed statements of the argument: If determinism is true, then our acts are the consequences of the laws of nature and events in the remote past. But it is not up to us what went on before we were born, and neither is it up to us what the laws of nature are. Therefore, the consequences of these things (including our present acts) are not up to us.[i] The reading that follows this one, Reading 41, “The Mystery of Metaphysical Freedom,” contains a statement of the Consequence Argument. The argument is contained in the paragraph (p. xxx) that starts, “As Carl Ginet has said . . . .” But, as you will see if you compare the “brief sketch” with that paragraph, “The Mystery of Metaphysical Freedom” presents the Consequence Argument in a disguise that is not easy to penetrate. Some teachers of philosophy who have used the first edition of Metaphysics: The Big Questions as a textbook have asked for a more straightforward statement of the Consequence Argument (since much of the recent discussion of the question of the compatibility of free will and determinism in the philosophical literature has taken the form of criticisms of the Consequence Argument that are rather hard to apply to the argument in the form in which it is presented in Reading 41). This essay is an attempt to meet this request.

The past 25 years have witnessed a vigorous discussion of an argument directed against the compatibilist approach to free will and responsibility. This reasoning, variously called the “consequence argument,” the “incompatibility argument,” and the “unavoidability argument,” may be expressed informally as follows: If determinism is true then whatever happens is a consequence of past events and laws over which we have no control and which we are unable to prevent. But whatever is a consequence of what’s beyond our control is not itself under our control. Therefore, if determinism is true then nothing that happens is under our control, including our own actions and thoughts. Instead, everything we do and think, everything that happens to us and within us, is akin to the vibration of a piano string upon being struck, with the past as pianist, and could not be otherwise than it is. While a number of philosophers take this reasoning to crush the prospects of compatibilism, others challenge its assumption that unavoidability “transfers” from sufficient condition to necessary condition or from cause to effect. The ensuing debate has occasionally been vitriolic— Hume once remarked that the free will issue is “the most contentious question of metaphysics, the most contentious science”—yet undeniably fruitful in generating more detailed examinations of ability and practical freedom. Whether we incline towards compatibilism or 2 incompatibilism, this latter development is likely to be of lasting value. As a compatibilist, I believe that the consequence argument fails to prove incompatibilism, and here I will develop criticisms of it that, for the most part, are already in the existing literature. Although a short essay cannot provide the theoretical account of practical freedom needed to underpin and justify this compatibilist critique, it will clarify the tasks that lie ahead.

The problem of analyzing causation and the problem of incompatibilism versus compatibilism are largely distinct. Yet, this paper will show that there are some theories of causation that a compatibilist should not endorse: namely, counterfactual theories, specifically the one developed by David Lewis and a newer, amended version of his account. Endorsing either of those accounts of causation undercuts the main compatibilist reply to a powerful argument for incompatibilism. Conversely, the argument of this paper has the following message for incompatibilists: you have reason to consider defending a counterfactual theory of causation.

Peter van Inwagen has offered two versions of an influential argument that has come to be called ‘the Consequence Argument’. The Consequence Argument purports to demonstrate that determinism is incompatible with free will.1 It aims to show that, if we assume determinism, we are committed to the claim that, for all propositions p, no one has or ever had any choice about p. Unfortunately, the original Consequence Argument employed an inference rule (the β-rule) that was shown to be invalid. (McKay and Johnson 1996) In response, van Inwagen revised his argument. I shall argue that the conclusion of the revised Consequence Argument is wholly independent of the premiss of determinism, and hence that the revised Consequence Argument is useless in showing that determinism is incompatible with free will.

Incompatibilism about freedom and causal determinism is commonly supported by appeal to versions of the well known Consequence argument. Critics of the Consequence argument have presented counterexamples to the Consequence argument's central inference principle. The thesis of this article is that proponents of the Consequence argument can easily bypass even the best of these counterexamples.

There is a new objection to the Consequence Argument for incompatibilism. I argue that the objection is more wide-ranging than originally thought. In particular: if it tells against the Consequence Argument, it tells against other arguments for incompatibilism too. I survey a few ways of dealing with this objection and show the costs of each. I then present an argument for incompatibilism that is immune to the objection and that enjoys other advantages.

Incompatibilism about freedom and causal determinism is commonly supported by appeal to versions of the well known Consequence argument. Critics of the Consequence argument have presented counterexamples to the Consequence argument's central inference principle. The thesis of this article is that proponents of the Consequence argument can easily bypass even the best of these counterexamples.