Online research in philosophy

In his famous argument for the unreality of time, McTaggart claims that i) being past, being present, and being future are incompatible properties of an event, yet ii) every event admits all these three properties. In this paper, I examine two key concepts involved in the formulation of i) and ii), namely that of “validity” and that of “contradiction”, and for each concept I distinguish a static version and a dynamic version of it. I then arrive at three different ways (...) of formulating McTaggart’s claims that avoid the notorious McTaggart’s Paradox. So long as we demand that McTaggart make clear use/mention and token/type distinctions in his claims, we shall find that it is indeed very difficult for him to get a genuine contradiction from i) and ii). (shrink)

I show the incompatibility of two theses: (a) to desire the truth of p amounts to believing a certain proposition about the value of p’s truth; (b) one cannot be said to desire the truth of p if one believes that p is true. Thesis (a), the Desire-As-Belief Thesis, has received much attention since the late 1980s. Thesis (b) is an epistemic variant of Socrates’ remark in the Symposium that one cannot desire what one already has. (...) It turns out that (a) and (b) cannot both be true if it is possible for there to exist an agent who has a desire initially, say the desire for the truth of p, and then expands the corpus of propositions she believes to include p. This result provides a new route to the denial of (a). (shrink)

It is shown that the Fodor's interpretation of the frame problem is the central indication that his version of the Modularity Thesis is incompatible with computationalism. Since computationalism is far more plausible than this thesis, the latter should be rejected.

It is commonly held that Wittgenstein abandoned the Tractatus largely because of a problem concerning color incompatibility. My aim is to solve this problem on Wittgenstein’s behalf. First I introduce the central program of the Tractatus (§1) and the color incompatibility problem (§2). Then I solve the problem without abandoning any Tractarian ideas (§3), and show that given certain weak assumptions, the central program of the Tractatus can in fact be accomplished (§4). I conclude by distinguishing my system (...) of analysis from others and by explaining the historical underpinnings of my understanding of the nature of elementary propositions (§5). (shrink)

I argue for a position close to what Paisley Livingston calls the bold thesis of cinema as philosophy. The bold thesis I defend is that films can make innovative, independent philosophical contributions by paradigmatic cinematic means. I clarify the thesis before presenting what Livingston thinks is a fatal problem for any similar position—the problem of paraphrase. As an example in defense of the bold thesis, I offer the "For God and Country" sequence in Sergei Eisenstein’s October (...) (1928). I argue that this scene offers an analogical argument similar in form to what some think Nietzsche presents in the Genealogy of Morality. Moreover, I argue that the argument presented in October is independent, could have been innovative, and is presented via the paradigmatic cinematic means of montage. (shrink)

This paper argues that Duhem’s thesis does not decisively refute a corroboration-based account of scientific methodology (or ‘falsificationism’), but instead that auxiliary hypotheses are themselves subject to measurements of corroboration which can be used to inform practice. It argues that a corroboration-based account is equal to the popular Bayesian alternative, which has received much more recent attention, in this respect.

The Church-Turing thesis makes a bold claim about the theoretical limits to computation. It is based upon independent analyses of the general notion of an effective procedure proposed by Alan Turing and Alonzo Church in the 1930''s. As originally construed, the thesis applied only to the number theoretic functions; it amounted to the claim that there were no number theoretic functions which couldn''t be computed by a Turing machine but could be computed by means of some other kind (...) of effective procedure. Since that time, however, other interpretations of the thesis have appeared in the literature. In this paper I identify three domains of application which have been claimed for the thesis: (1) the number theoretic functions; (2) all functions; (3) mental and/or physical phenomena. Subsequently, I provide an analysis of our intuitive concept of a procedure which, unlike Turing''s, is based upon ordinary, everyday procedures such as recipes, directions and methods; I call them mundane procedures. I argue that mundane procedures can be said to be effective in the same sense in which Turing machine procedures can be said to be effective. I also argue that mundane procedures differ from Turing machine procedures in a fundamental way, viz., the former, but not the latter, generate causal processes. I apply my analysis to all three of the above mentioned interpretations of the Church-Turing thesis, arguing that the thesis is (i) clearly false under interpretation (3), (ii) false in at least some possible worlds (perhaps even in the actual world) under interpretation (2), and (iii) very much open to question under interpretation (1). (shrink)

Church's thesis asserts that a number-theoretic function is intuitively computable if and only if it is recursive. A related thesis asserts that Turing's work yields a conceptual analysis of the intuitive notion of numerical computability. I endorse Church's thesis, but I argue against the related thesis. I argue that purported conceptual analyses based upon Turing's work involve a subtle but persistent circularity. Turing machines manipulate syntactic entities. To specify which number-theoretic function a Turing machine computes, we (...) must correlate these syntactic entities with numbers. I argue that, in providing this correlation, we must demand that the correlation itself be computable. Otherwise, the Turing machine will compute uncomputable functions. But if we presuppose the intuitive notion of a computable relation between syntactic entities and numbers, then our analysis of computability is circular. (shrink)

In this paper I undermine the Entailment Principle according to which if an entity is a truthmaker for a certain proposition and this proposition entails another, then the entity in question is a truthmaker for the latter proposition. I argue that the two most promising versions of the principle entail the popular but false Conjunction Thesis, namely that a truthmaker for a conjunction is a truthmaker for its conjuncts. One promising version of the principle understands entailment as strict implication (...) but restricts the field of application of the principle to purely contingent truths (i.e. those that contain no necessary proposition at any level of analysis). But a conjunction of purely contingent truths strictly implies its conjuncts. So this version of the principle is committed to the Conjunction Thesis. The same is true of the version of the principle where entailment is understood in the sense of systems T, R, and E of relevant logic, since in these systems conjunctions entail their conjuncts. I argue that the Conjunction Thesis is false because a truthmaker is that in virtue of what a certain proposition is true and it is false that, for example, what the proposition that Peter is a man is true in virtue of is the conjunctive fact that Peter is man and Saturn is a planet (or the facts that Peter is a man and that Saturn is a planet taken together). I also argue against other versions of the principle. (shrink)

The so-called ‘Adams’ Thesis’ is often understood as the claim that the assertibility of an indicative conditional equals the corresponding conditional probability—schematically: $${({\rm AT})}\qquad\qquad\quad As(A\rightarrow B)=P({B|A}),{\rm provided}\quad P(A)\neq 0.$$ The Thesis is taken by many to be a touchstone of any theorizing about indicative conditionals. Yet it is unclear exactly what the Thesis is . I suggest some precise statements of it. I then rebut a number of arguments that have been given in its favor. Finally, I (...) offer a new argument against it. I appeal to an old triviality result of mine against ‘Stalnaker’s Thesis’ that the probability of a conditional equals the corresponding conditional probability. I showed that for all finite-ranged probability functions, there are strictly more distinct values of conditional probabilities than there are distinct values of probabilities of conditionals, so they cannot all be paired up as Stalnaker’s Thesis promises. Conditional probabilities are too fine-grained to coincide with probabilities of conditionals across the board. If the assertibilities of conditionals are to coincide with conditional probabilities across the board, then assertibilities must be finer-grained than probabilities. I contend that this is implausible—it is surely the other way round. I generalize this argument to other interpretations of ‘ As ’, including ‘acceptability’ and ‘assentability’. I find it hard to see how any such figure of merit for conditionals can systematically align with the corresponding conditional probabilities. (shrink)

In response to physicians who refuse to provide medical services that are contrary to their ethical and/or religious beliefs, it is sometimes asserted that anyone who is not willing to provide legally and professionally permitted medical services should choose another profession. This article critically examines the underlying assumption that conscientious objection is incompatible with a physician’s professional obligations (the “incompatibility thesis”). Several accounts of the professional obligations of physicians are explored: general ethical theories (consequentialism, contractarianism, and rights-based theories), (...) internal morality (essentialist and non-essentialist conceptions), reciprocal justice, social contract, and promising. It is argued that none of these accounts of a physician’s professional obligations unequivocally supports the incompatibility thesis. (shrink)

Two experiments (N1 = 141, N2 = 40) investigate two versions of Aristotle’s Thesis for the first time. Aristotle’s Thesis is a negated conditional, which consists of one propositional variable with a negation either in the antecedent (version 1) or in the consequent (version 2). This task allows to infer if people interpret indicative conditionals as material conditionals or as conditional events. In the first experiment I investigate between-participants the two versions of Aristotle’s Thesis crossed with abstract (...) versus concrete task material. The modal response for all four groups is consistent with the conditional event and inconsistent with the material conditional interpretation. This observation is replicated in the second experiment. Moreover, the second experiment rules out scope ambiguities of the negation of conditionals. Both experiments provide new evidence against the material conditional interpretation of conditionals and support the conditional event interpretation. Finally, I discuss implications for modeling indicative conditionals and the relevance of this work for experimental philosophy. (shrink)

In this paper I shall define a thesis I shall call 'determinism', and argue that it is incompatible with the thesis that we are able to act otherwise than we do (i.e., is incompatible with 'free will'). Other theses, some of them very different from what I shall call 'determinism', have at least an equal right to this name, and, therefore, I do not claim to show that every thesis that could be called 'determinism' without historical impropriety (...) is incompatible with free will. I shall, however, assume without argument that what I call 'determinism' is legitimately so called. In Part I, I shall explain what I mean by 'determinism'. In Part II, I shall make some remarks about 'can'. In Part III, I shall argue that free will and determinism are incompatible. In Part IV, I shall examine some possible objections to the argument of Part III. I shall not attempt to establish the truth or falsity of determinism, or the existence or nonexistence of free will. (shrink)

I argue that the simple foreknowledge view, according to which God knows at some time t 1 what an agent S will do at t 2 , is incompatible with human free will. I criticize two arguments in favor of the thesis that the simple foreknowledge view is consistent with human freedom, and conclude that, even if divine foreknowledge does not causally compel human action, foreknowledge is nevertheless relevantly similar to other cases in which human freedom is undermined. These (...) cases include those in which certain human actions are logically, rather than causally, foreclosed. (shrink)

Machine generated contents note: Preface; 1. Introduction; 2. Three approaches to conscientious objection in health care: conscience absolutism, the incompatibility thesis, and compromise; 3. Ethical limitations on the exercise of conscience; 4. Pharmacies, health care institutions, and conscientious objection; 5. Students, residents, and conscience-based exemptions; 6. Conscience clauses: too little and too much protection; References.

According to the 'incompatibility thesis,' tenets of Marxist and Pragmatist ethics are incompatible at a very basic level. An opening move in the strategy of defending the incompatibility thesis is to summon the ghosts of Pragmatists and Marxists past, such as John Dewey and Leon Trotsky, and recount how their positions in a debate concerning ethics proved to be fundamentally at odds. The central claim of the paper is that despite the initial promise of this strategy, (...) scholars should be wary of citing the 1930s debate between Dewey and Trotsky and the differences revealed in this exchange as evidence in support of the incompatibility thesis. Significant areas of agreement between the two thinkers, both in their exchange and in the events surrounding it, ought to make us question the claimed incompatibility between Marxist and Pragmatist ethics. After presenting its standard interpretation, the ethical dimension of the debate is brought to the fore. Two versions of the debate - one offered by a Trotskyite and contemporary of Dewey and Trotsky's (George Novack) and the other by a recent Dewey biographer (Alan Ryan) - are reviewed. Both, it is argued, exaggerate Dewey and Trotsky's differences. Next, four areas of agreement between the two thinkers' ethical views are identified, each drawing support from the content of their debate as well from select events in the years preceding and following it. By way of reconstructing the Trotsky-Dewey debate, it is possible to trace a vital thread between Pragmatist and Marxist ethics - or so it is argued. (shrink)

In one of the most influential empiricist account on the epistemic nature of thought experiments John Norton proposes a challenge: that no thought experirnent in science could be found that cannot be logically reconstructed as an argument. Norton’s account has two main theses, the epistemic thesis that all information about the physical world delivered through a thought experiment comes solely frorn experience and the reconstruction thesis that all thought experiments could be reconstructed as arguments. In the present paper (...) I argue that in at least sorne cases Norton’s theses are incompatible with each other and therefore their combination could not form a reliable account. I try to show that sometimes the experience available could not justify the conclusion of a thought experiment and even contradicts it. I suggest an analysis of Einstein’s Train Thought Experiment as a counterexample to the challenge. (shrink)

Abstract This essay is a response to three review articles on two recently published books dealing with aspects of Hinduism and science: Jonathan Edelmann's Hindu Theology and Biology: The Bhāgavata Purāṇa and Contemporary Theory, and my own, Hindu Perspectives on Evolution: Darwin, Dharma and Design. The task set by the editor of Zygon for the three reviewers was broad: they could make specific critiques of the two books, or they could use them as starting points to engage in a broad (...) discussion of Hinduism and science, or religion and science in general. In my response, I first provide a fairly detailed reply to David Gosling's many critiques of my book, and in the process call into question his Advaitic conciliation of Hinduism and science. Thomas Ellis's thesis of basic incompatibility between Hinduism and science is much closer to my own viewpoint. One of the main objectives of my book was to explain and illustrate this incompatibility with specific regard to Hindu and Darwinian perspectives on evolution. In this essay I provide a few examples in support of Ellis's incompatibility thesis, encompassing both epistemological and metaphysical dissonances. Finally, I reflect upon Varadaraja V. Raman's wide-ranging exposition on the all-encompassing nature of the Hindu tradition that readily accommodates both religious and scientific quests for knowledge. Raman uses the two books only as starting points for his own thoughts, without reference to my book. I confine myself, accordingly, to a brief critique of his complementarity approach to Hinduism and science, and of his radical inclusivism that enfolds basically all philosophical positions into the warm embrace of the Hindu tradition, including even the extreme antireligious materialism of the Cārvāka. (shrink)

This paper has two parts. In the first part, I concede an error in an argument I have given for the incompatibility of free will and determinism. I go on to show how to modify my argument so as to avoid this error, and conclude that the thesis that free will and determinism are compatible continues to be—to say the least—implausible. But if free will is incompatible with determinism, we are faced with a mystery, for free will undeniably (...) exists, and it also seems to be incompatible with indeterminism. In the second part of this paper, I will defend the conclusion that the concept of agent causation is of no use to the philosopher who wants to maintain that free will and indeterminism are compatible. I conclude that free will remains a mystery---that is, that free will undeniably exists and that there is a strong and unanswered prima facie case for its impossibility. (shrink)

The extended-mind thesis (EM) is the claim that mentality need not be situated just in the brain, or even within the boundaries of the skin. Some versions take "extended selves" be to relatively transitory couplings of biological organisms and external resources. First, I show how EM can be seen as an extension of traditional views of mind. Then, after voicing a couple of qualms about EM, I reject EM in favor of a more modest hypothesis that recognizes enduring subjects (...) of experience and agents with integrated bodies. Nonetheless, my modest hypothesis allows subpersonal states to have nonbiological parts that play essential roles in cognitive processing. I present empirical warrant for this modest hypothesis and show how it leaves room for science and religion to coexist. (shrink)

This paper’s outline is as follows. In sections 1-3 I give an exposi¬tion of the Mind-Body Problem, with emphasis on what I believe to be the heart of the problem, namely, the Percepts-Qualia Nonidentity and its incompatibility with the Physical Closure Paradigm. In 4 I present the “Qualia Inaction Postulate” underlying all non-interactionist theo¬ries that seek to resolve the above problem. Against this convenient postulate I propose in section 5 the “Bafflement Ar¬gument,” which is this paper's main thesis. (...) Sections 6-11 critically dis¬cuss attempts to dismiss the Bafflement Argument by the “Baf¬flement=Mis¬perception Equation.” Section 12 offers a refutation of all such attempts in the form of a concise “Asymmetry Proof.” Section 13 points out the bearing of the Bafflement Argument on the evolutionary role of consciousness while section 14 acknowledges the price that has to be paid for it in terms of basic physical principles. Section 15 summarizes the paper, pointing out the inescapability of interactionist dualism. (shrink)

Accounts of propositions as sets of possible worlds have been criticized for conflating distinct impossible propositions. In response to this problem, some have proposed to introduce impossible worlds to represent distinct impossibilities, endorsing the thesis that impossible worlds must be of the same kind; this has been called the parity thesis. I show that this thesis faces problems, and propose a hybrid account which rejects it: possible worlds are taken as concrete Lewisian worlds, and impossibilities are represented (...) as set-theoretic constructions out of them. This hybrid account (1) distinguishes many intuitively distinct impossible propositions; (2) identifies impossible propositions with extensional constructions; (3) avoids resorting to primitive modality, at least so far as Lewisian modal realism does. (shrink)

According to the Extended Mind thesis, the mind extends beyond the skull or the skin: mental processes can constitutively include external devices, like a computer or a notebook. The Extended Mind thesis has drawn both support and criticism. However, most discussions—including those by its original defenders, Andy Clark and David Chalmers—fail to distinguish between two very different interpretations of this thesis. The first version claims that the physical basis of mental features can be located spatially outside the (...) body. Once we accept that the mind depends on physical events to some extent, this thesis, though not obvious, is compatible with a large variety of views on the mind. The second version applies to standing states only, and has to do with how we conceive the nature of such states. This second version is much more interesting, because it points to a potential tension in our conception of minds or selves. However, without properly distinguishing between the two theses, the significance of the second is obscured by the comparative triviality of the first. (shrink)

A number of philosophers have been impressed with the thought that moral saints and moral monsters—or, evil people, to put it less sensationally—“mirror” one another, in a sense to be explained. Call this the mirror thesis. The project of this paper is to cash out the metaphorical suggestion that moral saints and evil persons mirror one other and to articulate the most plausible literal version of the mirror thesis. To anticipate, the most plausible version of the mirror (...) class='Hi'>thesis implies that evil persons mirror moral saints insofar as the characters of each are marked by similar aretaic properties: suffering from extremely vicious character traits—in a sense to be explained—suffices for being evil whereas possessing extremely virtuous character traits similarly suffices for moral sainthood. (shrink)

The extended mind thesis is the claim that mental states extend beyond the skulls of the agents whose states they are. This seemingly obscure and bizarre claim has far-reaching implications for neuroethics, I argue. In the first half of this article, I sketch the extended mind thesis and defend it against criticisms. In the second half, I turn to its neuroethical implications. I argue that the extended mind thesis entails the falsity of the claim that interventions into (...) the brain are especially problematic just because they are internal interventions, but that many objections to such interventions rely, at least in part, on this claim. Further, I argue that the thesis alters the focus of neuroethics, away from the question of whether we ought to allow interventions into the mind, and toward the question of which interventions we ought to allow and under what conditions. The extended mind thesis dramatically expands the scope of neuroethics: because interventions into the environment of agents can count as interventions into their minds, decisions concerning such interventions become questions for neuroethics. (shrink)

Many assert that affluent countries have contributed in the past to poverty in developing countries through wars of aggression and conquest, colonialism and its legacies, the imposition of puppet leaders, and support for brutal dictators and venal elites. Thomas Pogge has recently argued that there is an additional and, arguably, even more consequential way in which the affluent continue to contribute to poverty in the developing world. He argues that when people cooperate in instituting and upholding institutional arrangements that foreseeably (...) result in more severe or more widespread poverty or human rights deficits than would foreseeably result under feasible alternative arrangements, they are contributors to these harms. Because of this, he argues, they have stringent, contribution-based (or negative) duties to address this poverty. We will call this the ‘Feasible Alternatives Thesis' (FAT), and our aim in this article is to examine it critically. (shrink)

Arguments to the effect that Church's thesis is intrinsically unprovable because proof cannot relate an informal, intuitive concept to a mathematically defined one are unconvincing, since other 'theses' of this kind have indeed been proved, and Church's thesis has been proved in one direction. However, though evidence for the truth of the thesis in the other direction is overwhelming, it does not yet amount to proof.

There is a philosophical tradition of arguing against presentism, the thesis that only presently existing things exist, on the basis of its incompatibility with fundamental physics. I grant that presentism is incompatible with special and general relativity, but argue that presentism is not incompatible with quantum gravity, because there are some theories of quantum gravity that utilize a fixed foliation of spacetime. I reply to various objections to this defense of presentism, and point out a flaw in Gödel's (...) modal argument for the ideality of time. This paper provides an interesting case study of the interplay between physics and philosophy. (shrink)

In a penetrating investigation of the relationship between belief and quantitative degrees of confidence (or degrees of belief) Richard Foley (1992) suggests the following thesis: ... it is epistemically rational for us to believe a proposition just in case it is epistemically rational for us to have a sufficiently high degree of confidence in it, sufficiently high to make our attitude towards it one of belief. Foley goes on to suggest that rational belief may be just rational degree of (...) confidence above some threshold level that the agent deems sufficient for belief. He finds hints of this view in Locke’s discussion of probability and degrees of assent, so he calls it the Lockean Thesis.1 The Lockean Thesis has important implications for the logic of belief. Most prominently, it implies that even a logically ideal agent whose degrees of confidence satisfy the axioms of probability theory may quite rationally believe each of a large body of propositions that are jointly inconsistent. For example, an agent may legitimately believe that on each given occasion her well-maintained car will start, but nevertheless believe that she will eventually encounter a.. (shrink)

Part I of this essay supports the anti-egalitarian conclusion that individuals may readily become entitled to substantially unequal extra-personal holdings by criticizing end-state and pattern theories of distributive justice and defending the historical entitlement doctrine of justice in holdings. Part II of this essay focuses on a second route to the anti-egalitarian conclusion. This route combines the self-ownership thesis with a contention that is especially advanced by G.A. Cohen. This is the contention that the anti-egalitarian conclusion can be inferred (...) from the self-ownership thesis without the aid of additional controversial premises. Cohen advances this contention, not because he wants to support the anti-egalitarian conclusion, but rather because he wants to emphasize the need for one to reject the self-ownership thesis if one is to reject the anti-egalitarian conclusion. In Part II of this essay, I support this second route to the anti-egalitarian conclusion by reinforcing Cohen's special contention while rejecting his challenges to the self-ownership thesis. Cohen's special contention is reinforced by way of an explanation of why the redistributive state must trench upon some people's self-ownership rights. One important challenge to the self-ownership thesis is answered through the articulation of a new and improved Lockean proviso. Another challenge offered by Cohen is answered by arguing that the philosophical costs of denying the self-ownership thesis are as great as the self-ownership libertarian maintains. Thus, I defend both of the key elements of self-ownership libertarianism, the self-ownership thesis and the anti-egalitarian conclusion. Key Words: autonomy • distributive justice • egalitarianism • exploitation • Lockean proviso • self-ownership • slavery. (shrink)

Naturalistic philosophers ought to think that the mind is continuous with the rest of the world and should not, therefore, be surprised by the findings of the extended mind, cognitive integration and enactivism. Not everyone is convinced that all mental phenomena are continuous with the rest of the world. For example, intentionality is often formulated in a way that makes the mind discontinuous with the rest of the world. This is a consequence of Brentano’s formulation of intentionality, I suggest, and (...) can be overcome by revealing that the concept of intentional directedness as he receives it from the Scholastics is quite consistent with the continuity thesis. It is only when intentional directedness is conjoined with intentional inexistence that intentionality and content are consistent with a discontinuity thesis (such as Brentano’s thesis). This makes room to develop an account of intentional directedness that is consistent with the continuity thesis in the form of Peirce’s representational principle. I also argue against a form of the discontinuity thesis in the guise of the derived/underived content distinction. Having shown that intentionality is consistent with the continuity thesis I argue that we should focus on intentionality and representation as bodily enacted. I conclude that we would be better off focussing on representation and intentionality in action rather than giving abstract functional accounts of extended cognition. (shrink)

This paper explores the ramifications of the extended cognition thesis in the philosophy of mind for contemporary epistemology. In particular, it argues that all theories of knowledge need to accommodate the ability intuition that knowledge involves cognitive ability, but that once this requirement is understood correctly there is no reason why one could not have a conception of cognitive ability that was consistent with the extended cognition thesis. There is thus, surprisingly, a straightforward way of developing our current (...) thinking about knowledge such that it incorporates the extended cognition thesis. (shrink)

: Philosophers in the analytic and phenomenological traditions have interpreted Brentano's intentionality thesis, and his empirical psychology more generally, in significantly different ways. Disregarding Brentano's distinctive psychological method, analytic philosophers have typically read him as a philosopher of mind, and his intentionality thesis as a contribution to the Cartesian project of clarifying the distinction between the mental and the physical. Phenomenologists, while more attentive to his method, tended to read Brentano as merely Òon the wayÓ to a truly (...) phenomenological approach. I offer a third reading of Brentano thesis, one that attends to both the motivating concerns and the distinctive methodological features of his psychological project. (shrink)

The Termination Thesis (or “TT”) is the view that people go out of existence when they die. Lots of philosophers seem to believe it. Epicurus, for example, apparently makes use of TT in his efforts to show that it is irrational to fear death. He says, “as long as we exist, death is not with us; but when death comes, then we do not exist.”1 Lucretius says pretty much the same thing, but in many more words and more poetically: (...) “Death therefore to us is nothing, concerns us not a jot, since the nature of the mind is proved to be mortal; . . . when we shall be no more, when there shall have been a separation of body and soul, out of both of which we are each formed into a single being, to us, you may be sure, who then shall be no more, nothing whatever can happen to excite sensation.”. (shrink)

Underdetermination is a relation between evidence and theory. More accurately, it is a relation between the propositions that express the (relevant) evidence and the propositions that constitute the theory. Evidence is said to underdetermine theory. This may mean two things. First, the evidence cannot prove the truth of the theory. Second, the evidence cannot render the theory probable. Let’s call the first deductive underdetermination, and the second inductive (or ampliative) underdetermination. Both kinds of claim are supposed to have a certain (...) epistemic implication, viz., that belief in theory is never warranted by the evidence. This is the underdetermination thesis. (shrink)

Church's Thesis asserts that the only numeric functions that can be calculated by effective means are the recursive ones, which are the same, extensionally, as the Turing-computable numeric functions. The Abstract State Machine Theorem states that every classical algorithm is behaviorally equivalent to an abstract state machine. This theorem presupposes three natural postulates about algorithmic computation. Here, we show that augmenting those postulates with an additional requirement regarding basic operations gives a natural axiomatization of computability and a proof of (...) Church's Thesis, as Gödel and others suggested may be possible. In a similar way, but with a different set of basic operations, one can prove Turing's Thesis, characterizing the effective string functions, and--in particular--the effectively-computable functions on string representations of numbers. (shrink)

Perhaps more controversial than whether physicalism is true is what exactly would have to be true for physicalism to be true. Everyone agrees that, intuitively at least, physicalism is the thesis that there is nothing over and above the physical. The disagreements arise in how to get beyond this intuitive formulation. Until about ten years ago, participants in this debate were concerned primarily with answering two questions. First, what is it for a property, kind, relation, or individual to be (...) a physical one? (shrink)

It is argued that neither the "theory-informity" of observations nor the Quine-Duhem thesis pose any in principle threat to the objectivity of theory evaluation. The employment of exploratory theories does not generate incommensurability, but on the contrary is responsible for the mensurability and commensurability of explanatory theories, since exploratory theories enable scientists to make observations which are critical in the evaluation of explanatory theories. The employment of exploratory theories and other auxiliary hypotheses does not enable a theory to always (...) accommodate recalcitrant observations to preserve evidential equivalence with a rival theory. Explanatory theories become rapidly degenerating if exploratory theories or other auxiliary hypotheses which inform the original confirmation base are modified to accommodate recalcitrant observations. (shrink)

Quine claims that holism (i.e., the Quine-Duhem thesis) prevents us from defining synonymy and analyticity (section 2). In Word and Object, he dismisses a notion of synonymy which works well even if holism is true. The notion goes back to a proposal from Grice and Strawson and runs thus: R and S are synonymous iff for all sentences T we have that the logical conjunction of R and T is stimulus-synonymous to that of S and T. Whereas Grice and (...) Strawson did not attempt to defend this definition, I try to show that it indeed gives us a satisfactory account of synonymy. Contrary to Quine, the notion is tighter than stimulus-synonymy – particularly when applied to sentences with less than critical semantic mass (section 3). Now according to Quine, analyticity could be defined in terms of synonymy, if synonymy were to make sense: A sentence is analytic iff synonymous to self-conditionals. This leads us to the following notion of analyticity: S is analytic iff, for all sentences T, the logical conjunction of S and T is stimulus-synonymous to T; an analytic sentence does not change the semantic mass of any theory to which it may be conjoined (section 4). This notion is tighter than Quine's stimulus-analyticity; unlike stimulus-analyticity, it does not apply to those sentences from the very center of our theories which can be assented to come what may, even though they are not synthetic in the intuitive sense (section 5). Conclusion: We can have well-defined notions of synonymy and analyticity even if we embrace Quine's holism, naturalism, behaviorism, and radical translation. Quine's meaning skepticism is to be repudiated on Quinean grounds. (shrink)

The consequence argument for the incompatibility of free action and determinism has long been under attack, but two important objections have only recently emerged: Warfield’s modal fallacy objection and Campbell’s no past objection. In this paper, I explain the significance of these objections and defend the consequence argument against them. First, I present a novel formulation of the argument that withstands their force. Next, I argue for the one controversial claim on which this formulation relies: the trans-temporality thesis. (...) This thesis implies that an agent acts freely only if there is one time at which she is able to perform an action and a distinct time at which she actually performs it. I then point out that determinism, too, is a thesis about trans-temporal relations. I conclude that it is precisely because my formulation of the consequence argument emphasizes trans-temporality that it prevails against the modal fallacy and no past objections. (shrink)

This paper reviews the situation with respect to the referential approach to the problem of semantic incommensurability. It argues that the thesis of semantic incommensurability does not pose a significant threat to scientific realism. However, there exists a "non-realist" defence of incommensurability, according to which the referential approach begs the question against advocates of the incommensurability thesis. This defence is criticized, and the basis for a realist response to incommensurability is presented.

The Modern Synthesis of Darwinism and genetics regards non-genetic factors as merely constraints on the genetic variations that result in the characteristics of organisms. Even though the environment (including social interactions and culture) is as necessary as genes in terms of selection and inheritance, it does not contain the information that controls the development of the traits. S. Oyama’s account of the Parity Thesis, however, states that one cannot conceivably distinguish in a meaningful way between nature-based (i.e., gene-based) and (...) nurture-based (i.e., environment-based) characteristics in development because the information necessary for the resulting characteristics is contained at both levels. Oyama and others argue that the Parity Thesis has far-reaching implications for developmental psychology, in that both nativist and interactionist developmental accounts of motor, cognitive, affective, social, and linguistic capacities that presuppose a substantial nature/nurture dichotomy are inadequate. After considering these arguments, we conclude that either Oyama’s version of the Parity Thesis does not differ from the version advocated by liberal interactionists, or it renders precarious any analysis involving abilities present at birth (despite her claim to the contrary). More importantly, developmental psychologists need not discard the distinction between innate characteristics present at birth and those acquired by learning, even if they abandon genocentrism. Furthermore, we suggest a way nativists can disentangle the concept of maturation from a genocentric view of biological nature. More specifically, we suggest they can invoke the maturational segment of the developmental process (which involves genetic, epigenetic and environmental causes) that results in the biological “machinery” (e.g. language acquisition device) which is necessary for learning as a subsequent segment of the developmental process. (shrink)

The paper has two main objectives: first, it presents a new argument against the so-called Anscombe Thesis (if χ φ-s by ψ-ing, then χ's φ-ing = χ's ψ-ing). Second, it develops a proposal about the syntax and semantics of the 'by'-locution.

While discussing the work of Kuhn and Hanson, John Greenwood (1990) misidentifies the nature of the relationship between the incommensurability of theories and the theory-ladenness of observation. After pointing out this error, I move on to consider Greenwood's main argument that the Quine-Duhem thesis suffers from a form of epistemological self-defeat if it is interpreted to mean that any recalcitrant observation can always be accommodated to any theory. Greenwood finds this interpretation implausible because some adjustments to auxiliary hypotheses undermine (...) too much of the prior observational evidence for the test theory. I argue that Greenwood mistakes the logico-metaphysical Quine-Duhem thesis for an epistemological one. All the argument he takes to undercut it actually illustrates how well the thesis works on a practical level. This is illustrated with an example from contemporary immunology. (shrink)

It has been an interpretative dogma to condemn Euthyphro's attempt to account for piety in terms of the gods' wishes as one totally repudiated by Socrates, and in itself untenable. Still at 15c8-9 Socrates expresses some scepticism about whether his refutation of Euthyphro's original account of piety in terms of what the gods love has established that it must be abandoned altogether. He then goes on to say that he and Euthyphro ought to investigate again (παλιν σκεπτεoν), from the beginning (...) (εξ αρχηζ), what piety is (15c11-12), which may be taken to imply that Euthyphro's original account should be revisited. Interpreting Socrates' refutation of that account as having shown that it is one he rejects completely implies that no weight should be attached to Socrates' later reservations, even though he exhibits considerable care in expressing them. Unfortunately, as I argue, this interpretative stand has not brought us any closer to understanding the conception of piety Plato may be attributing to Socrates. If only for the purpose of interpretative completeness, we owe it to Plato actually to do as Socrates suggests at the end of the dialogue that one ought to, and revisit Euthyphro's thesis. In this paper, I propose to break ranks with the dogma. Instead, I follow Socrates' recommendation at 15c11 that we should look into what piety is from the beginning, simply to examine whether there are any insights that might be uncovered by doing so. (shrink)

Kripke (1982, Wittgenstein on rules and private language. Cambridge, MA: MIT Press) presents a rule-following paradox in terms of what we meant by our past use of “plus”, but the same paradox can be applied to any other term in natural language. Many responses to the paradox concentrate on fixing determinate meaning for “plus”, or for a small class of other natural language terms. This raises a problem: how can these particular responses be generalised to the whole of natural language? (...) In this paper, I propose a solution. I argue that if natural language is computable in a sense defined below, and the Church–Turing thesis is accepted, then this auxiliary problem can be solved. (shrink)

This paper re-addresses Quine's indeterminacy of translation/inscrutability of reference thesis, as a problem for cognitive theories of content. In contradistinction with Quine's behavioristic semantics, theories of meaning, or content, in the cognitivist tradition endorse intentional realism, and are prone to be unsympathetic to Quine's thesis. Yet, despite this fundamental difference, I argue that they are just as vulnerable to the indeterminacy. I then argue that the vulnerability is rooted in a theoretical commitment tacitly shared with Quine, namely, the (...) commitment to the view that the perceptual input to the cognitive system is extensional - differentiating objects, but not the aspects (or, properties) they manifest. Thus, input extensionalism, and not behaviorism, is what forces the indeterminacy. I conclude by suggesting that the solution to Quine's indeterminacy problem hinges on the elaboration of an intensional theory of perceptual input, and of content in general. (shrink)

This article defends a modest version of the Physical Church-Turing thesis (CT). Following an established recent trend, I distinguish between what I call Mathematical CT—the thesis supported by the original arguments for CT— and Physical CT. I then distinguish between bold formulations of Physical CT, according to which any physical process—anything doable by a physical system—is computable by a Turing machine, and modest formulations, according to which any function that is computable by a physical system is computable by (...) a Turing machine. I argue that Bold Physical CT is not relevant to the epistemological concerns that motivate CT and hence not suitable as a physical analog of Mathematical CT. The correct physical analog of Mathematical CT is Modest Physical CT. I propose to explicate the notion of physical computability in terms of a usability constraint, according to which for a process to count as relevant to Physical CT, it must be usable by a finite observer to obtain the desired values of a function. Finally, I suggest that proposed counterexamples to Physical CT are still far from falsifying it because they have not been shown to satisfy the usability constraint. (shrink)

Buck-passers about value accept two theses about value, a negative thesis and a positive. The negative thesis is that the fact that something is valuable is not itself a reason to promote or appreciate it. The positive thesis is that the fact that something is valuable consists in the fact that there are other reasons to promote or appreciate it. Buck-passers suppose that the negative thesis follows from the positive one, and sometimes insist on it as (...) if it is the central part of their view. But as I'll explain here, what we say about the negative thesis is orthogonal to what we say about the positive one. (shrink)

A version of the Church-Turing Thesis states that every effectively realizable physical system can be defined by Turing Machines (‘Thesis P’); in this formulation the Thesis appears an empirical, more than a logico-mathematical, proposition. We review the main approaches to computation beyond Turing definability (‘hypercomputation’): supertask, non-well-founded, analog, quantum, and retrocausal computation. These models depend on infinite computation, explicitly or implicitly, and appear physically implausible; moreover, even if infinite computation were realizable, the Halting Problem would not be (...) affected. Therefore, Thesis P is not essentially different from the standard Church-Turing Thesis. 1 Introduction 2 Computability and incomputability 3 The physical interpretation of the Church-Turing Thesis 4 Supertasks and infinite computation 5 Computation on non-well-founded domains 6 Analog computation 7 Quantum computation 8 Retrocausal computation 9 Conclusions. (shrink)

The correspondence theory of truth has experienced something of a revival recently in the form of the Truthmaker Axiom: whatever is true, something makes it true. We consider various postulates which have been proposed to characterize truthmaking, in particular, the Disjunction Thesis (DT), that whatever makes a disjunction true must make one or other disjunct true. In conjunction with certain other assumptions, DT leads to triviality. We show that there are elaborations of truthmaking on which DT holds (which must (...) therefore take steps to avoid the triviality); but that there are more plausible accounts of truthmaking on which DT fails. (shrink)

Many authors have taken up the challenge of formulating physicalism as a supervenience thesis. These endeavors have met with varying response, but it seems that the general consensus still remains that a supervenience thesis that is both sufficient and necessary for physicalism has yet to be developed. Terence Horgan1 and Jaegwon Kim2 have most famously argued that supervenience theses are not sufficiently strong for physicalism. Nonetheless, several recent articles suggest that there are philosophers who still hold out hope (...) for some type of supervenience of the mental upon the physical being, if not both sufficient and necessary, at least necessary for physicalism.3 In this paper, I will 1) investigate some of the motivation for finding a supervenience thesis that characterizes physicalism, 2) briefly review the types of supervenience theses that have been proposed as necessary (or necessary and sufficient) for physicalism, and 3) investigate in some detail the recent supervenience thesis proposed by Frank Jackson and expounded upon by Gene Witmer. Jackson, in his recent book, claims to have a supervenience thesis that is both necessary and sufficient for physicalism. (shrink)

The Multiverse Thesis is a proposed solution to the Grandfather Paradox. It is popular and well promulgated, found in fiction, philosophy and (most importantly) physics. I first offer a short explanation on behalf of its advocates as to why it qualifies as a theory of time travel (as opposed to mere ‘universe hopping’). Then I argue that the thesis nevertheless has an unwelcome consequence: that extended objects cannot travel in time. Whilst this does not demonstrate that the Multiverse (...) Thesis is false, the consequence should give pause for concern. Even if it does not lead one to reject the thesis, I briefly detail some reasons to think it is interesting nonetheless. (shrink)

Virtually everyone takes the moral supervenience thesis to be a basic conceptual truth about morality. As a result, if a metaethical theory has difficulties respecting or adequately explaining the supervenience relationship it is deemed to be in big trouble. However, the moral supervenience thesis is a not a conceptual truth (though it may be true) and as such it is not a problem if a metaethical theory cannot respect or explain it.

This paper advances a version of physicalism which reconciles the “a priori entailment thesis” (APET) with the analytic independence of our phenomenal and physical vocabularies. The APET is the claim that, if physicalism is true, the complete truths of physics imply every other truth a priori. If so, “cosmic hermeneutics” is possible: a demon having only complete knowledge of physics could deduce every truth about the world. Analytic independence is a popular physicalist explanation for the apparent “epistemic gaps” between (...) phenomenal and physical truths. The two are generally seen as incompatible, since the demon’s deductions seem to presuppose analytic connections between physical and phenomenal terms. I begin by arguing, in support of the APET, that implications from the complete truths of physics to phenomenal truths cannot be a posteriori. Such implications are (according to the physicalist) necessarily true. But they cannot be Kripke-style a posteriori necessities, since (according to the physicalist) the complete truths of physics fix any relevant a posteriori facts about the reference of terms. I then show how the physicalist can turn the tables: the demon can exploit the physical fixing of reference to bridge the gap between the vocabularies, by deducing when phenomenal and physical terms co-refer. This opens the way for a “type-C” physicalism, which accepts in-principle deducibility while still appealing to analytic independence to explain why we (who are not demons) find it impossible to see phenomenal-physical connections a priori. (shrink)

Many authors have taken up the challenge of formulating physicalism as a supervenience thesis. These endeavors have met with varying response, but it seems that the general consensus still remains that a supervenience thesis that is both sufficient and necessary for physicalism has yet to be developed. Terence Horgan¹ and Jaegwon Kim² have most famously argued that supervenience theses are not sufficiently strong for physicalism. Nonetheless, several recent articles suggest that there are philosophers who still hold out hope (...) for some type of supervenience of the mental upon the physical being, if not both sufficient and necessary, at least necessary for physicalism.³ In this paper, I will 1) investigate some of the motivation for finding a supervenience thesis that characterizes physicalism, 2) briefly review the types of supervenience theses that have been proposed as necessary (or necessary and sufficient) for physicalism, and 3) investigate in some detail the recent supervenience thesis proposed by Frank Jackson and expounded upon by Gene Witmer. Jackson, in his recent book, claims to have a supervenience thesis that is both necessary and sufficient for physicalism. (shrink)

The so-called `no-thesis' view is without a doubt one of the most immediately puzzling philosophical features of Nāgārjuna's thought and also largely responsible for ascribing to him either sceptical or mystical leanings (or indeed both). The locus classicus for this view is found in verse 29 of the Vigrahavyāvartanī: “If I had some thesis the defect [just mentioned] would as a consequence attach to me. But I have no thesis, so this defect is not applicable to me.” (...) That this absence of a thesis is to be regarded as a positive feature is stressed in a passage from the Yuktiṣaṣṭikā, where Nāgārjuna remarks about the Buddhas: “For these great beings there is no position, no dispute. How could there be another's [opposing] position for those who have no position?” Now it is important to observe that when considered in isolation it is very hard to make any coherent sense of these passages. For even if we assume that the Buddhas do not hold any philosophical position anymore (having perhaps passed beyond all conceptual thinking), how are we to make sense of the first quotation which, in the middle of a work full of philosophical theses claims that there is no such thesis asserted at all? (shrink)

Sider has a favourable view of supersubstantivalism (the thesis that all material objects are identical to the regions of spacetime that they occupy). This paper argues that given supersubstantivalism, Sider's argument from vagueness for (mereological) universalism fails. I present Sider's vagueness argument (§§II-III), and explain why - given supersubstantivalism - some but not all regions must be concrete in order for the argument to work (§IV). Given this restriction on what regions can be concrete, I give a reductio of (...) Sider's argument (§V). I conclude with some brief comments on why this is not simply an ad hominem against Sider, and why this incompatibility of supersubstantivalism with the argument from vagueness is of broader interest (§VI). (shrink)

This article examines Becker's thesis that the hypothesis that choices maximize expected utility relative to fixed and universal tastes provides a general framework for the explanation of behaviour. Three different models of preference revision are presented and their scope evaluated. The first, the classical conditioning model, explains all changes in preferences in terms of changes in the information held by the agent, holding fundamental beliefs and desires fixed. The second, the Jeffrey conditioning model, explains them in terms of changes (...) in both the information held by the agent and changes in her prior beliefs, holding her fundamental desires fixed. The final model, that of generalized conditioning, allows for explanations in terms of changes in the values of all three variables. Key Words: preference change • decision theory • probability • desirability • attitude change. (shrink)

The current consensus in Locke scholarship is that Robert Boyle anticipated Locke's thesis that classification into species is the arbitrary work of the understanding. In fact, according to Michael Ayers, inter alia, not only did Boyle and Locke both think that classification is the workmanship of the understanding but that this thesis follows directly from the mechanical hypothesis itself. In this paper I argue that this reading of Boyle is mistaken: Locke's thesis on classification was not anticipated (...) by Boyle. I will do this by showing that Boyle's account of classification is not Locke's, but is a more realist view of natural species employing a mechanically respectable account of natural forms. (shrink)

In ' Unnatural Doubts' Michael Williams argues that Cartesian skepticism is not truly an "intuitive problem" (that is, one which we can state with little or no appeal to contentious theories) at all. According to Williams, the skeptic has rich theoretical commitments all his own, prominent among which is the epistemic priority thesis. I argue, however, that Williams's diagnostic critique of the epistemic priority thesis fails on his own conception of what is required for success. Furthermore, in a (...) brief "Afterword" I argue that the later Wittgenstein (to whom Williams sometimes appeals) would concur with my critique of Williams's antiskeptical efforts. (shrink)

Recent work on hypercomputation has raised new objections against the Church–Turing Thesis. In this paper, I focus on the challenge posed by a particular kind of hypercomputer, namely, SAD computers. I first consider deterministic and probabilistic barriers to the physical possibility of SAD computation. These suggest several ways to defend a Physical version of the Church–Turing Thesis. I then argue against Hogarth's analogy between non-Turing computability and non-Euclidean geometry, showing that it is a non-sequitur. I conclude that the (...) Effective version of the Church–Turing Thesis is unaffected by SAD computation. (shrink)

Stalking the elusive physicalist thesis Content Type Journal Article Pages 1-5 DOI 10.1007/s11016-011-9528-2 Authors D. Gene Witmer, Department of Philosophy, University of Florida, P. O. Box 118545, Gainesville, FL 32611-8545, USA Journal Metascience Online ISSN 1467-9981 Print ISSN 0815-0796.

In the Transcendental Deductions, Kant attempts to establish the necessary applicability of the categories to what is encountered in experience. As I see it, the argument is intended to deduce two distinct, but, in Kant’s eyes, interrelated, claims. The first is that it is a necessity that experience be of an objective world. Call this rough idea the objectivity thesis. The second thesis is that the categoriesapply only to mere appearances, that is, the world insofar as we structure (...) it. Call this the idealist thesis. P. F. Strawson attempted to split the two claims in order to save the objectivity thesis from what he saw as its unnecessary idealist trappings. My thesis is that the objectivity thesis depends upon the idealist thesis and cannot survive on its own. (shrink)

There are various equivalent formulations of the Church-Turing thesis. A common one is that every effective computation can be carried out by a Turing machine. The Church-Turing thesis is often misunderstood, particularly in recent writing in the philosophy of mind.

The life–mind continuity thesis holds that mind is prefigured in life and that mind belongs to life. The biggest challenge faced by proponents of this thesis is to show how an explanatory framework that accounts for basic biological processes can be systematically extended to incorporate the highest reaches of human cognition. We suggest that this apparent ‘cognitive gap’ between minimal and human forms of life appears insurmountable largely because of the methodological individualism that is prevalent in cognitive science. (...) Accordingly, a twofold strategy is used to show how a consideration of sociality can address both sides of the cognitive gap: (1) it is argued from a systemic perspective that inter-agent interactions can extend the behavioral domain of even the simplest agents and (2) it is argued from a phenomenological perspective that the cognitive attitude characteristic of adult human beings is essentially intersubjectively constituted, in particular with respect to the possibility of perceiving objects as detached from our own immediate concerns. These two complementary considerations of the constitutive role of inter-agent interactions for mind and cognition indicate that sociality is an indispensable element of the life–mind continuity thesis and of cognitive science more generally. (shrink)

General metaphysical arguments have been proposed in favour of the thesis that all dispositions have categorical bases (Armstrong; Prior, Pargetter, Jackson). These arguments have been countered by equally general arguments in support of ungrounded dispositions (Molnar, Mumford). I believe that this controversy cannot be settled purely on the level of abstract metaphysical considerations. Instead, I propose to look for ungrounded dispositions in specific physical theories, such as quantum mechanics. I explain why non-classical properties such as spin are best interpreted (...) as irreducible dispositional properties, and I give reasons why even seemingly classical properties, for instance position or momentum, should receive a similar treatment when interpreted in the quantum realm. Contrary to the conventional wisdom, I argue that quantum dispositions should not be limited to probabilistic dispositions (propensities) by showing reasons why even possession of well-defined values of parameters should qualify as a dispositional property. I finally discuss the issue of the actuality of quantum dispositions, arguing that it may be justified to treat them as potentialities whose being has a lesser degree of reality than that of classical categorical properties, due to the incompatibility relations between non-commuting observables. (shrink)

Abstract: For William Blattner, Heidegger's phenomenology fails to demonstrate how a nonsuccessive temporal manifold can ‘generate’ the appropriate sequence of world-time Nows. Without this he cannot explain the ‘derivative’ status of ordinary time. In this article I show that it is only Blattner's reconstruction that makes failure inevitable. Specifically, Blattner is wrong in the way he sets out the explanatory burden, arguing that the structure of world-time must meet the traditional requirements of ordinary time logic if the derivation is to (...) succeed. He takes this to mean: mundane ‘tasks’, the contents of world-time nows, must form a transitive series, importing back into world-time the very structure that Heidegger says is derived by its levelling-off. I argue, instead, that world-time nows, seen at the level of lived content, can be quite ‘irrational’ but this is perfectly consistent with the generative thesis. Adapting Blattner's useful suggestion that temporality is sequence building or ‘iterative’ I show that iteration does not manifest itself at the level of tasks but at the ‘existential’ level of my involvement in a task. Depriving that involvement of its expressive content is what accounts for the levelling-off of the world-time now and thus the derivation of the ordinary concept of time. (shrink)

According to what Barry Dainton calls the 'Strong Introspectibility thesis', it is a necessary truth that mental states S and S* are co-conscious (experienced together) if and only if they are 'jointly introspectible', i.e., if and only if it is possible for there to be some single state of introspective awareness that represents both S and S*. Dainton offers two arguments for the conclusion that joint introspectibility is unnecessary for co-consciousness. In these comments I attempt to show, first, that (...) Dainton's arguments fail, and, second, that joint introspectibility is actually insufficient for co-consciousness. (As to whether it is also unnecessary, I take no stance.). (shrink)

Abstract According to Habermas' colonization thesis, reification is a social pathology that arises when the communicative infrastructure of the lifeworld is 'colonized' by money and power. In this paper I argue that, thirty years after the publication of the Theory of Communicative Action, this thesis remains compelling. However, while Habermas offers a functionalist explanation of reification, his normative criticism of it remains largely implicit: he never explains what is wrong with reification from the perspective of the people whose (...) social relations are reified. As a result, Habermas cannot explain why only some forms of colonization lead to reification effects. In particular, he suggests that reification effects result from the juridification of communicatively structured domains of action but not from the commodification of labour power. I criticize this argument and suggest that if the normative dimension of the colonization thesis is made explicit, a more nuanced explanation of reification becomes possible. (shrink)

Abstract: Two important thought-experiments are associated with the work of Hilary Putnam, one designed to establish multiple realizability for mental kinds, the other designed to establish essentialism for natural kinds. Comparing the thought-experiments with each other reveals that the scenarios in both are structurally analogous to each other, though his intuitions in both are greatly at variance, intuitions that have been simultaneously well received. The intuition in the former implies a thesis that prioritizes pre-scientific over scientific indicators for identifying (...) mental kinds in certain circumstances, while his intuition in the latter implies a converse thesis, prioritizing scientific over pre-scientific indicators for identifying natural kinds in analogous circumstances. In this paper I question whether we can consistently endorse both of these intuitions. A consideration is presented to attempt to justify the common intuition found in the multiple realization thought-experiment. Then it is argued that this same consideration has application in the structurally analogous Twin-Earth thought-experiment. This recommends a kind of multiple realization thesis for natural kinds, in opposition to a scientific essentialist approach. The various respects in which mental kinds like pain and natural kinds like water are similar to each other, such that similar philosophical treatments are warranted for both, are enumerated. (shrink)

“Tarski’s Thesis” is the claim that a certain invariance condition can serve as our criterion of logicality. My goal in this paper is to explain the thesis, provide it with a philosophical justification, and respond to three recent criticisms due to Solomon Feferman.

In this essay I articulate and defend a thesis about the nature of morality called “the embodiment thesis”. The embodiment thesis states that moral values underdetermine the obligations and entitlements of individual persons, and that actual social institutions must embody morality by specifying these moral relations. I begin by presenting two thought experiments that elucidate and motivate the embodiment thesis. I then proceed by distinguishing the embodiment thesis from a Rawlsian doctrine about the nature of (...) justice, from the doctrine of moral relativism, and from solutions to the coordination problem of rational choice theory. (shrink)

Armstrong’s combinatorial theory of possibility faces the obvious difficulty that not all universals are compatible. In this paper I develop three objections against Armstrong’s attempt to account for property incompatibilities. First, Armstrong’s account cannot handle incompatibilities holding among properties that are either simple, or that are complex but stand to one another in the relation of overlap rather than in the part/ whole relation. Secondly, at the heart of Armstrong’s account lies a notion of structural universals which, building on an (...) objection by David Lewis, is shown to be incoherent. I consider and reject two alternative ways of construing the composition of structural universals in an attempt to meet Lewis’ objection. An important consequence of this is that all putative structural properties are in fact simple. Finally, I argue that the quasi-mereological account presupposes modality in a way that undermines the reductionist aim of the combinatorialist theory of which it is a central part. I conclude that Armstrong’ quasi-mereological account of property incompatibility fails. Without that account, however, Armstrong’s combinatorial theory either fails to get off the ground, or else must give up its goal of reducing the notion of possibility to something non-modal. (shrink)

Truthmaker maximalism is the claim that every truth has a truthmaker. The case of negative truths leads some philosophers to postulate negative states of affairs or to give up on truthmaker maximalism. This paper defends a version of the incompatibility view of negative truths. Negative truths can be made true by positive facts, and thus, truthmaker maximalism can be maintained without postulating negative states of affairs.

We describe a possible physical device that computes a function that cannot be computed by a Turing machine. The device is physical in the sense that it is compatible with General Relativity. We discuss some objections, focusing on those which deny that the device is either a computer or computes a function that is not Turing computable. Finally, we argue that the existence of the device does not refute the Church–Turing thesis, but nevertheless may be a counterexample to Gandy's (...) thesis. (shrink)

Revelation is the thesis that having an experience that instantiates some phenomenal property puts us in a position to know the nature or essence of that property. It is widely held that although Revelation is prima facie plausible, it is inconsistent with physicalism, and, in particular, with the claim that phenomenal properties are physical properties. I outline the standard argument for the incompatibility of Revelation and physicalism and compare it with the Knowledge Argument. By doing so, I hope (...) to show that on various plausible interpretations of Revelation it is in fact consistent with physicalism. Moreover, there is a robust reading of Revelation that a posteriori physicalists can, and should, accept. (shrink)

We critically discuss Cleland''s analysis of effective procedures as mundane effective procedures. She argues that Turing machines cannot carry out mundane procedures, since Turing machines are abstract entities and therefore cannot generate the causal processes that are generated by mundane procedures. We argue that if Turing machines cannot enter the physical world, then it is hard to see how Cleland''s mundane procedures can enter the world of numbers. Hence her arguments against versions of the Church-Turing thesis for number theoretic (...) functions miss the mark. (shrink)

The Church–Turing Thesis (CTT) is often employed in arguments for computationalism. I scrutinize the most prominent of such arguments in light of recent work on CTT and argue that they are unsound. Although CTT does nothing to support computationalism, it is not irrelevant to it. By eliminating misunderstandings about the relationship between CTT and computationalism, we deepen our appreciation of computationalism as an empirical hypothesis.

Burge's thesis is the thesis that certain second-order self-ascriptions are self-verifying in virtue of their self-referential form. The thesis has recently come under attack on the grounds that it does not yield a theory of self-knowledge consistent with semantic externalism, and also on the grounds that it is false. In this paper I defend Burge's thesis against both charges, in particular against the arguments of Bernecker, Gallois and Goldberg. The alleged counterexamples they provide are merely apparent (...) counterexamples, and the thesis is adequate to its proper task. To think otherwise is simply to misunderstand the thesis. (shrink)

How ought we to respond to other people caring about whatever it is that they care about – even if they care about things that are obviously not careworthy?2 For example, if my neighbor cares about collecting antique decorative saltshakers and I think this is an idiotic pastime, how ought I to respond to this? My thesis is that I should respond by accommodating his cares.3 I describe accommodation as follows: [Accommodation] A accommodates B’s caring about F by adjusting (...) her behavior in deference to B’s caring about F.4 So, the thesis I defend in this paper is the following. (shrink)

We discuss Hintikka’s Thesis [Hintikka 1973] that there exist natural language sentences which require non–linear quantification to express their logical form.

One of us has previously argued that the Church-Turing Thesis (CTT), contra Elliot Mendelson, is not provable, and is — light of the mind’s capacity for effortless hypercomputation — moreover false (e.g., [13]). But a new, more serious challenge has appeared on the scene: an attempt by Smith [28] to prove CTT. His case is a clever “squeezing argument” that makes crucial use of Kolmogorov-Uspenskii (KU) machines. The plan for the present paper is as follows. After covering some necessary (...) preliminaries regarding the nature of CTT, and taking note of the fact that this thesis is “intrinsically cognitive” (§2), we: sketch out, for context, an open-minded position on CTT and related matters (§3); explain the formal structure of squeezing arguments (§4); after a review of KU-machines, formalize Smith’s case (§5); give our objections to certain assumptions in Smith’s argument (§6); support these objections with some evidence from general but limited-agent problem solving (§7); and explain why Smith’s argument is inconclusive (§8). We end with some brief, concluding remarks, some of which point toward near-future work that will build on the present paper (§9). (shrink)

McKinsey-style incompatibilist arguments attempt to show that the thesis that subjects have privileged, a priori access to the contents of their thoughts is incompatible with semantic externalism. This incompatibility follows – it is urged – from the fact that these theses jointly entail an absurd conclusion, namely, the possibility of a priori knowledge of the world. In a recent paper I argued that a large and important class of such arguments exemplifies a dialectical failure: if they are valid, (...) the putatively absurd conclusion can be generated without the privileged access premise. Michael McKinsey has responded by arguing that the semantic externalist should adopt a neutral free logic invalidating a principle that my argument essentially relies on. I will say why the semantic commitments of the externalist are in tension with free logic, thereby vindicating my original argument. (shrink)

The Academics offered an argument from twins or perceptually indiscernible objects and an argument from dreams or madness in support of the indiscernibility thesis: that every true perceptual impression is such that some false impression just like it is possible. I claim that these arguments, unlike modern sceptical arguments, are supposed to establish mere counterfactual rather than epistemic possibilities. They purport to show that for any true perceptual impression j, there are a number of alternative causal histories j might (...) have had which would not have resulted in any change in the way in which j represents its object. (shrink)

In my article "Understanding the Separation Thesis" I noted that most scholars in the business ethics field seemed to have accepted R. Edward Freeman's argument to the effect that what he calls "the separation thesis" should be rejected. I argue, however, that they seemed to understand this thesis (and its rejection) in quite different ways. This volume contains three responses to my article which, interestingly enough, can be taken to corroborate my original argument. I here make some (...) brief comments on these responses. (shrink)

Many writers in the field of business ethics seem to have accepted R. Edward Freeman’s argument to the effect that what he calls “the separation thesis,” or the idea that business and morality can be separated in certain ways, should be rejected. In this paper, I discuss how this argument should be understood more exactly, and what position “the separation thesis” refers to. I suggest that there are actually many interpretations (or versions) of the separation thesis going (...) around, ranging from semantic, empirical and reformative to some which are straightforwardly normative. While it is generally agreed that the separation thesis should be rejected, then, there is not as much agreement on what this thesis actually says. I suggest that whether or not we should<br>reject the separation thesis, however, ultimately must depend on how we understand it more exactly—on certain interpretations, the thesis comes out as more or less trivially false, but we should demand more evidence or argument to reject it on certain other interpretations. This result presents a challenge for all those writers who are committed to the rejection of the separation thesis. (shrink)

In the section ‘Further reading’, I listed a book that arrived on my desk just as I was sending IGT off to the press, namely Church’s Thesis after 70 Years edited by Adam Olszewski et al. On the basis of a quick glance, I warned that the twenty two essays in the book did seem to be of ‘variable quality’. But actually, things turn out to be a bit worse than that: the collection really isn’t very good at all! (...) After I sent my book to press, I gave a paper-by-paper review on my blog, at http://logicmatters.blogspot.com. It is probably more fun to chase up the reviews ‘in the wild’, so to speak, starting from the entry for May 14, 2007. But here they are wrapped up into a single document, only marginally tidied. Some of the points made here should help further explain and support the general line on the Thesis taken in.. (shrink)

I consider whether there is a plausible conception of personal identity that can accommodate the ‘Multiplicity Thesis’ (MT), the thesis that some ways of creating and deploying multiple distinct online personae can bring about the existence of multiple persons where before there was only one. I argue that an influential Kantian line of thought, according to which a person is a unified locus of rational agency, is well placed to accommodate the thesis. I set out such a (...) line of thought as developed by Carol Rovane, and consider the conditions that would have to be in place for the possibility identified by MT to be realised. Finally I briefly consider the prospects for MT according to neo-Lockean and animalist views of personhood. (shrink)

In this journal, Luke Russell defends a sophisticated dispositional account of evil personhood according to which a person is evil just in case she is strongly and highly fixedly disposed to perform evil actions in conditions that favour her autonomy. While I am generally sympathetic with this account, I argue that Russell wrongly dismisses the mirror thesis—roughly, the thesis that evil people are the mirror images of the morally best sort of persons—which I have defended elsewhere. Russell’s rejection (...) of the mirror thesis depends upon an independently implausible account of moral sainthood, one that is implausible for reasons that Russell himself suggests in another context. Indeed, an account of moral sainthood that parallels Russell’s account of evil personhood is plausible for the same reasons that his account of evil personhood is, and that suggests that Russell himself is actually committed to the mirror thesis. (shrink)

In The Paradox of Self-Consciousness, Jose Luis Bermúdez presents an abductive argument for what he calls ‘the Symmetry Thesis’ about self-ascription: in order to have the ability to self-ascribe psychological predicates to oneself, one must be able to ascribe psychological predicates to other subjects like oneself. Bermúdez discusses joint engagement as a key phenomenon that underwrites his abductive argument for the Symmetry Thesis. He argues that the ability to self-ascribe is “constituted” by the intersubjective relations that are realized (...) in joint engagement. I will argue in §1 that although Bermúdez may be correct that these phenomena support the idea that pre-linguistic infants and non-linguistic animals possess primitive forms of self-consciousness, for conceptual reasons, his account of joint engagement cannot be used to argue for the Symmetry thesis. I will argue in §2 that while Bermúdez is correct that joint engagement is significant for the constitution of self-ascription, his description of that phenomenon is too robust, because it requires that the infant have a mental representation of the other as a psychological subject of perceptions. I argue that Bermúdez’s description requires an iteration of representations each of which requires a form of self-reference, which goes against Bermudez’s aim of avoiding the paradox of self-consciousness. In presenting his argument for the Symmetry thesis and his account of joint engagement, Bermúdez critiques P. F. Strawson’s argument for the Symmetry Thesis. In §3 of the paper, I turn to the positive project of presenting a constructive argument for the Symmetry thesis. In a variety of sources, P. F. Strawson and Gareth Evans present a transcendental argument for the Symmetry thesis. I suggest that an argument for the Symmetry thesis is available in Strawson’s notion of the primitiveness of the person. In §4, this leads to a corresponding account of joint engagement. Instead of the robust account of joint engagement presented by Bermúdez, I suggest that the infant perceives the mother’s acknowledgement of the infant without the capacity for self-reference that the Bermúdez’s iteration requires. I reconstruct an account of other-ascription in terms of what I call “person perception,” relying on a recent discussion of Strawson’s view by Axel Seemann (2008). On the Strawsonian account that I provide, an adult summons a child to recognize and acknowledge a form of life in which it participates as a person. In closing, I consider how my account of other-ascription differs from two classic accounts— the theory-theory and the simulation theory— and discuss how my account provides a genuine third alternative: the Persons theory. I would argue that the Persons theory offers a new approach to key issues in philosophy and psychology concerning self-consciousness and intersubjectivity. (shrink)

Hans Reichenbach is well known for his limiting frequency view of probability, with his most thorough account given in The Theory of Probability in 1935/1949. Perhaps less known are Reichenbach’s early views on probability and its epistemology. In his doctoral thesis from 1915, Reichenbach espouses a Kantian view of probability, where the convergence limit of an empirical frequency distribution is guaranteed to exist thanks to the synthetic a priori principle of lawful distribution. Reichenbach claims to have given a purely (...) objective account of probability, while integrating the concept into a more general philosophical and epistemological framework. A brief synopsis of Reichenbach’s thesis and a critical analysis of the problematic steps of his argument will show that the roots of many of his most influential insights on probability and causality can be found in this early work. (shrink)

Recent philosophical attention to the language of disease has focused primarily on the question of its value-neutrality or non-neutrality. Proponents of the value-neutrality thesis symbolically combine political and other criticisms of medicine in an attack on what they see as value-infected uses of disease language. The present essay argues against two theses associated with this view: a methodological thesis which tends to divorce the analysis of disease language from the context of the practice of medicine and a substantive (...) thesis which holds that disease language is evaluatively neutral. In particular, the essay critically focuses on the value neutral position adopted by Christopher Boorse, which he terms a functional theory of disease. The argument concerns whether or not one can have value neutral description of disease states or whether disease language essentially involves values. (shrink)

Duhem first expounds the holistic thesis, according to which an experimental test always involves several hypotheses, in articles dating from the 1890s. Poincaré's analysis of a recent experiment in optics provides the incentive, but Duhem generalizes this analysis and develops a highly original methodological position. He is led to reject inductivism. I will endeavor to show the crucial role history of science comes to play in the development of Duhem's holism.

In their recent book, Epistemology and the Psychology of Human Judgment, Michael Bishop and J.D. Trout have challenged Standard Analytic Epistemology (SAE) in all its guises and have endorsed a version of the "replacement thesis"--proponents of which aim at replacing the standard questions of SAE with psychological questions. In this article I argue that Bishop and Trout offer an incomplete epistemology that, as formulated, cannot address many of the core issues that motivate interest in epistemological questions to begin with, (...) and so is not a fit replacement. (shrink)

In the seventeenth century, Newton published his famous experimentum crucis, in which he claimed that light is heterogeneous and is composed of (colored) rays with different refrangibilities. Experiments, especially a crucial experiment, were important for justifying Newton’s theory of light, and eventually his theory of color. Goethe conducted a series of experiments on the nature of color, especially in contradistinction to Newton, and he defended his research with a methodological principle formulated in “Der Versuch als Vermittler.” Goethe’s principle included a (...) series of experiments and resultant higher empirical evidence as mediator between the objective (natural phenomena) and the subjective (theory or hypothesis). Although the notion of experimentum crucis became popular among scientists, even until today, in reconstructing experimental research and for justifying theories, especially for rhetorical purposes, I propose that Newton’s justification of his theory of light and color is best reconstructed in terms of Goethe’s methodological principle. Finally, Goethe’s principle has important consequences for the contemporary philosophical underdetermination thesis. (shrink)