Consequence rleations over sets of "judgments" are defined by using "overdetermined" as well as "underdetermined" valuations. Some of these relations are shown to be categorical. And generalized soundness and completeness results are given for both multiple and single conclusion consequence relations.

Although Robert Nozick has argued that libertarianism is compatible with the justice of a minimal state—even if does not arise from mutual consent—few have been persuaded. I will outline a different way of establishing that a non-consensual libertarian state can be just. I will show that a state can—with a few important qualifications—justly enforce the rights of citizens, extract payments to cover the costs of such enforcement, redistribute resources to the poor, and invest in infrastructure to overcome market failures. Footnotesa (...) For very helpful comments, I am indebted to Dani Attas, Ellen Frankel Paul, Robert Johnson, Brian Kierland, Mike Otsuka, Eric Roark, and the other contributors to this volume. (shrink)

This exploration of the Family Guy character Francis Griffin (Peter's father) reveals the pitfalls of his evangelical mindset, and the epistemic shortcomings of evangelical epistemology. Scripture, Historical Tradition, and religious Experience (SHiTE) can't justify religious belief.

This reissue of his collection of early essays, Logico-Linguistic Papers, is published with a brand new introduction by Professor Strawson but, apart from minor ...

A new translation and edition of Aristotle's Protrepticus (with critical comments on the fragments) -/- Welcome -/- The Protrepticus was an early work of Aristotle, written while he was still a member of Plato's Academy, but it soon became one of the most famous works in the whole history of philosophy. Unfortunately it was not directly copied in the middle ages and so did not survive in its own manuscript tradition. But substantial fragments of it have been preserved in several (...) works by Iamblichus of Chalcis, a third century A.D. neo-Pythagorean philosopher and educator. On the basis of a close study of Iamblichus' extensive use and excerption of Aristotle's Protrepticus, it is possible to reconstruct the backbone of the lost work, and then to flesh it out with the other surviving reports about the work from antiquity (for example in Alexander of Aphrodisias and other ancient commentators on Aristotle). It is also possible to identify several papyrus fragments of the work, and many references and literary allusions in later authors, especially Cicero, whose own lost dialogue Hortensius was a defense of philosophy modeleld on Aristotle's. (shrink)

This chapter addresses the relationship between misinformation and disagreement. We begin by arguing that one traditional bogeyman in this domain, ideological polarization, does not account for the many problems that have been documented. Instead, affective polarization seems to be the root cause of most of these problems. We then discuss the relationships between moral outrage, misinformation, and affective polarization. We next turn to the political implications of affective polarization and conclude by discussing some potential solutions to the problems that arise (...) in this area. (shrink)

A semantics is presented for Storrs McCall's separate axiomatizations of Aristotle's accepted and rejected polysyllogisms. The polysyllogisms under discussion are made up of either assertoric or apodeictic propositions. The semantics is given by associating a property with a pair of sets: one set consists of things having the property essentially and the other of things having it accidentally. A completeness proof and a semantic decision procedure are given.

Archytas of Tarentum, a contemporary and associate of Plato, was a famous Pythagorean, mathematician, and statesman of Tarentum. Although his works are lost and most of the fragments attributed to him were composed in later eras, they nevertheless contain valuable information about his thought. In particular, the fragments of On Law and Justice are likely based on a work by the early Peripatetic biographer Aristoxenus of Tarentum. The fragments touch on key themes of early Greek ethics, including: written and unwritten (...) laws; freedom and self-sufficiency; moderation of the emotions and cultivation of virtues; equality and the competence of the majority to participate in government; criticism of “rule by an individual”; a theory of the ideal “mixed constitution”; distributive and corrective justice and punishment, and of the rule of law. The fragments also contain one of the only positive accounts of democracy in ancient Greek philosophy. (shrink)

This paper proposes an abstract mathematical frame for describing some features of biological time. The key point is that usual physical (linear) representation of time is insufficient, in our view, for the understanding key phenomena of life, such as rhythms, both physical (circadian, seasonal …) and properly biological (heart beating, respiration, metabolic …). In particular, the role of biological rhythms do not seem to have any counterpart in mathematical formalization of physical clocks, which are based on frequencies along the usual (...) (possibly thermodynamical, thus oriented) time. We then suggest a functional representation of biological time by a 2-dimensional manifold as a mathematical frame for accommodating autonomous biological rhythms. The “visual” representation of rhythms so obtained, in particular heart beatings, will provide, by a few examples, hints towards possible applications of our approach to the understanding of interspecific differences or intraspecific pathologies. The 3- dimensional embedding space, needed for purely mathematical reasons, allows to introduce a suitable extra-dimension for “representation time”, with a cognitive significance. (shrink)

The goal of the current paper is to provide an introduction to and survey of the diverse landscape of relevant alternatives theories of knowledge. Emphasis is placed throughout both on the abstractness of the relevant alternatives approach and its amenability to formalization through logical techniques. We present some of the important motivations for adopting the relevant alternatives approach; briefly explore the connections and contrasts between the relevant alternatives approach and related developments in logic, epistemology and philosophy of science; provide a (...) schema for classifying and studying relevant alternatives theories at different levels of abstraction; and present a sample of relevant alternatives theories (contrasting what we call question-first and topic-first theories) that tie our discussion to on-going debates in the philosophical literature, as well as showcasing techniques for formalizing some of the important positions in these debates. (shrink)

We present a formal semantics for epistemic logic, capturing the notion of knowability relative to information (KRI). Like Dretske, we move from the platitude that what an agent can know depends on her (empirical) information. We treat operators of the form K_AB (‘B is knowable on the basis of information A’) as variably strict quantifiers over worlds with a topic- or aboutness- preservation constraint. Variable strictness models the non-monotonicity of knowledge acquisition while allowing knowledge to be intrinsically stable. Aboutness-preservation models (...) the topic-sensitivity of information, allowing us to invalidate controversial forms of epistemic closure while validating less controversial ones. Thus, unlike the standard modal framework for epistemic logic, KRI accommodates plausible approaches to the Kripke-Harman dogmatism paradox, which bear on non-monotonicity, or on topic-sensitivity. KRI also strikes a better balance between agent idealization and a non-trivial logic of knowledge ascriptions. (shrink)

This study steps beyond the traditional arguments of feminism and examines homebirth from a libertarian perspective. It addresses the debate over homebirth and midwifery, which includes the use of direct-entry midwives as well as the philosophical implications of individual autonomy expressed through consumer choice. Furthermore, this paper demonstrates that the medical establishment gains economic and political control primarily through medical licensing, and uses the state to undermine personal freedom as it advances a government-enforced monopoly on birth. At the same time, (...) empirical studies have established a substantial record of high safety and low medical complication rates for homebirth as compared to hospital births. Ultimately, the state’s restriction on medical choices is incompatible with the nonaggression principle and voluntarism, and therefore, with libertarianism. (shrink)

Timothy Williamson has argued that in the debate on modal ontology, the familiar distinction between actualism and possibilism should be replaced by a distinction between positions he calls contingentism and necessitism. He has also argued in favor of necessitism, using results on quantified modal logic with plurally interpreted second-order quantifiers showing that necessitists can draw distinctions contingentists cannot draw. Some of these results are similar to well-known results on the relative expressivity of quantified modal logics with so-called inner and outer (...) quantifiers. The present paper deals with these issues in the context of quantified modal logics with generalized quantifiers. Its main aim is to establish two results for such a logic: Firstly, contingentists can draw the distinctions necessitists can draw if and only if the logic with inner quantifiers is at least as expressive as the logic with outer quantifiers, and necessitists can draw the distinctions contingentists can draw if and only if the logic with outer quantifiers is at least as expressive as the logic with inner quantifiers. Secondly, the former two items are the case if and only if all of the generalized quantifiers are first-order definable, and the latter two items are the case if and only if first-order logic with these generalized quantifiers relativizes. (shrink)

The term “Gettier Case” is a technical term frequently applied to a wide array of thought experiments in contemporary epistemology. What do these cases have in common? It is said that they all involve a justified true belief which, intuitively, is not knowledge, due to a form of luck called “Gettiering.” While this very broad characterization suffices for some purposes, it masks radical diversity. We argue that the extent of this diversity merits abandoning the notion of a “Gettier case” in (...) a favour of more finely grained terminology. We propose such terminology, and use it to effectively sort the myriad Gettier cases from the theoretical literature in a way that charts deep fault lines in ordinary judgments about knowledge. (shrink)

In recent years, interest in desert-based theories of justice has increased, and this seems to represent a challenge to equality-based theories of justice.[i] The best distribution of outcomeadvantage with respect to desert, after all, need not be the most equal distribution of outcomeadvantage. Some individuals may deserve more than others. Outcome egalitarianism is, however, implausible, and so the conflict of outcome desert with outcome equality is of little significance.[ii] Most contemporary versions of egalitarianism are concerned with neutralizing the differential effects (...) of brute luck and not with equality of outcome. I shall argue that, in order to be plausible, a desert-based theory of justice can and must be compatible with this form of egalitarianism. There is, however, a stronger form of brute luck egalitarianism, which, as I shall explain, is concerned with equalizing the advantages from brute luck—and not merely with neutralizing the differential effects thereof. Under idealized conditions in which agents have perfect information about the outcomes that their choices generate, even this stronger form of egalitarianism, I shall show, is compatible with pure desert theory. Under conditions of incomplete information, however, strong brute luck egalitarianism is incompatible with a pure desert theory that appeals, as I shall explain, to moral, rather than prudential, desert. (shrink)

One semantic and two syntactic decision procedures are given for determining the validity of Aristotelian assertoric and apodeictic syllogisms. Results are obtained by using the Aristotelian deductions that necessarily have an even number of premises.

This is the first volume of Equality and Justice, a six-volume collection of the most important articles of the twentieth century on the topic of justice and equality. This volume addresses the following three (only loosely related) issues: (1) What is the concept of justice? (2) Is justice primarily a demand on individuals or on societies? (3) What are the relative merits of conceptions of justice based on equality, based on priority for those who have less, and based on ensuring (...) that everyone has a basic minimum, of the relevant goods? (shrink)

The JSTOR Archive is a trusted digital repository providing for long-term preservation and access to leading academic journals and scholarly literature from around the world. The Archive is supported by libraries, scholarly societies, publishers, and foundations. It is an initiative of JSTOR, a not-for-profit organization with a mission to help the scholarly community take advantage of advances in technology. For more information regarding JSTOR, please contact [email protected].

A theorem due to Shoesmith and Smiley that axiomatizes two-valued multiple-conclusion logics is extended to partial logics.

Counting functions are shown to be complete by using a simpler argument than that used by Pelletier and Martin.

Copi's method of deduction is formalized and shown to be complete.

Parry discusses an extension of Aristotle's syllogistic that uses four nontraditional quantifiers. We show that his conjectured decision procedure for validity for the extended syllogistic is correct even if syllogisms have more than two premises. And we axiomatize this extension of the syllogistic.

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 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)

I argue that if Wittgenstein’s Private Language Argument is correct, then both Theory Theory and Simulation Theory are inadequate accounts of how we come to know other minds since both theories assume the reality of a private language. Further, following the work of a number of philosophers and psychologists, I defend a ‘Second-Person Approach’ to mindreading according to which it is possible for us to be directly aware of at least some of the mental states of others. Because it is (...) not necessary to assume a private language within the Second-Person Approach, I argue that this account of social cognition is superior to Theory-Theory and Simulation Theory since it avoids the objections of the PLA. (shrink)

Fitelson (1999) demonstrates that the validity of various arguments within Bayesian confirmation theory depends on which confirmation measure is adopted. The present paper adds to the results set out in Fitelson (1999), expanding on them in two principal respects. First, it considers more confirmation measures. Second, it shows that there are important arguments within Bayesian confirmation theory and that there is no confirmation measure that renders them all valid. Finally, the paper reviews the ramifications that this "strengthened problem of measure (...) sensitivity" has for Bayesian confirmation theory and discusses whether it points at pluralism about notions of confirmation. (shrink)

Peter Ludlow shows how word meanings are much more dynamic than we might have supposed, and explores how they are modulated even during everyday conversation. The resulting view is radical, and has far-reaching consequences for our political and legal discourse, and for enduring puzzles in the foundations of semantics, epistemology, and logic.

In the mid-seventeenth century a movement of self-styled experimental philosophers emerged in Britain. Originating in the discipline of natural philosophy amongst Fellows of the fledgling Royal Society of London, it soon spread to medicine and by the eighteenth century had impacted moral and political philosophy and even aesthetics. Early modern experimental philosophers gave epistemic priority to observation and experiment over theorising and speculation. They decried the use of hypotheses and system-building without recourse to experiment and, in some quarters, developed a (...) philosophy of experiment. The movement spread to the Netherlands and France in the early eighteenth century and later impacted Germany. Its important role in early modern philosophy was subsequently eclipsed by the widespread adoption of the Kantian historiography of modern philosophy, which emphasised the distinction between rationalism and empiricism and had no place for the historical phenomenon of early modern experimental philosophy. The re-emergence of interest in early modern experimental philosophy roughly coincided with the development of contemporary x-phi and there are some important similarities between the two. (shrink)

The present paper investigates the first step of rational belief acquisition. It, thus, focuses on justificatory relations between perceptual experiences and perceptual beliefs, and between their contents, respectively. In particular, the paper aims at outlining how it is possible to reason from the content of perceptual experiences to the content of perceptual beliefs. The paper thereby approaches this aim by combining a formal epistemology perspective with an eye towards recent advances in philosophy of cognition. Furthermore the paper restricts its focus, (...) it concentrates on the case of color perception and perceptual beliefs about color. (shrink)

This paper argues that early modern experimental philosophy emerged as the dominant member of a pair of methods in natural philosophy, the speculative versus the experimental, and that this pairing derives from an overarching distinction between speculative and operative philosophy that can be ultimately traced back to Aristotle. The paper examines the traditional classification of natural philosophy as a speculative discipline from the Stagirite to the seventeenth century; medieval and early modern attempts to articulate a scientia experimentalis; and the tensions (...) in the classification of natural magic and mechanics that led to the introduction of an operative part of natural philosophy in the writings of Francis Bacon and John Johnston. The paper concludes with a summary of the salient discontinuities between the experimental/speculative distinction of the mid-seventeenth century and its predecessors and a statement of the developments that led to the ascendance of experimental philosophy from the 1660s. (shrink)

I defend the following version of the ought-implies-can principle: (OIC) by virtue of conceptual necessity, an agent at a given time has an (objective, pro tanto) obligation to do only what the agent at that time has the ability and opportunity to do. In short, obligations correspond to ability plus opportunity. My argument has three premises: (1) obligations correspond to reasons for action; (2) reasons for action correspond to potential actions; (3) potential actions correspond to ability plus opportunity. In the (...) bulk of the paper I address six objections to OIC: three objections based on putative counterexamples, and three objections based on arguments to the effect that OIC conflicts with the is/ought thesis, the possibility of hard determinism, and the denial of the Principle of Alternate Possibilities. (shrink)

Although the relationship of part to whole is one of the most fundamental there is, this is the first full-length study of this key concept. Showing that mereology, or the formal theory of part and whole, is essential to ontology, Simons surveys and critiques previous theories--especially the standard extensional view--and proposes a new account that encompasses both temporal and modal considerations. Simons's revised theory not only allows him to offer fresh solutions to long-standing problems, but also has far-reaching consequences for (...) our understanding of a host of classical philosophical concepts. (shrink)

The attachment for download here merely references my 5,500-word final and extended article, criticising those who seek to justify Israeli attacks on Gaza. The article is published online by Daily Philosophy, 5th January 2024, link shown below. -/- After a background of facts (probably well-known by readers concerned about the matters), the article examines typical arguments much used in the media as attempts to justify Israel’s determined destruction of Gaza, involving well over twenty thousand Palestinians killed, hundreds of thousands suffering (...) appalling injuries and two million having their lives and livihoods shattered. -/- I expose inconsistencies, poor reasoning and immoralities of those who support Israeli actions. There is a final touch of Kant and Nietzsche - and use of the saying attributed to Jesus: For what shall it profit a man, if he shall gain the whole world and lose his own soul? (shrink)

This article gives an overview over different principles of epistemic closure, their attractions and their problems.

We argue that recent empirical findings and theoretical models shed new light on the nature of attention. According to the resulting amplification view, attentional phenomena can be unified at the neural level as the consequence of the amplification of certain input signals of attention-independent perceptual computations. This way of identifying the core realizer of attention evades standard criticisms often raised against sub-personal accounts of attention. Moreover, this approach also reframes our thinking about the function of attention by shifting the focus (...) from the function of selection to the function of amplification. (shrink)

The first section of this paper asks why the notion of consensus has recently come to the fore in the medical humanities, and suggests that the answer is a function of growing technological and professional complexity. The next two sections examine the concept of consensus analytically, citing some of the recent philosophical literature. The fourth section looks at committee deliberations and their desirable outcomes, and questions the degree to which consensus serves those outcomes. In the fifth and last section it (...) is suggested that if I am to subscribe to a consensual outcome responsibly I must be personally committed to it, and that this requires a form of knowledge I call ‘fiduciary’, in this case knowledge of the competence and trustworthiness of other participants in deliberation whose expertise may have influenced my agreement. (shrink)

How should an agent revise her epistemic state in the light of doxastic disagreement? The problems associated with answering this question arise under the assumption that an agent’s epistemic state is best represented by her degree of belief function alone. We argue that for modeling cases of doxastic disagreement an agent’s epistemic state is best represented by her confirmation commitments and the evidence available to her. Finally, we argue that given this position it is possible to provide an adequate answer (...) to the question of how to rationally revise one’s epistemic state in the light of disagreement. (shrink)

Important advances in biomedical and behavioral research ethics have occurred over the past few decades, many of them centered on identifying and eliminating significant harms to human subjects of research. Comprehensive attention has not been paid to the totality of harms experienced by animal subjects, although scientific and moral progress require explicit appraisal of these harms. Science is a public good and the prioritizing within, conduct of, generation of, and application of research must soundly address questions about which research is (...) morally defensible and valuable enough to support through funding, publication, tenure, and promotion. Likewise, educational pathways of re-imagined science are critical. (shrink)

This chapter provides an introduction to higher-order metaphysics as well as to the contributions to this volume. We discuss five topics, corresponding to the five parts of this volume, and summarize the contributions to each part. First, we motivate the usefulness of higher-order quantification in metaphysics using a number of examples, and discuss the question of how such quantifiers should be interpreted. We provide a brief introduction to the most common forms of higher-order logics used in metaphysics, and indicate a (...) number of questions which can be raised in such systems using logical vocabulary alone. Using a further example, we return to applications of higher-order logics in metaphysics. We also mention key developments in the history of higher-order logic as it pertains to metaphysics. Finally, we mention certain arguments which have been raised against the use of higher-order logic, and some ways of responding to them. (shrink)

Peter Ludlow presents the first book on the philosophy of generative linguistics, including both Chomsky's government and binding theory and his minimalist ...

As artforms, film and street art seem incompatible. Contra this incompatibility, I investigate their combination: cinematic street art. Two promising cases are the artworks MUTO and Repopulate, but I argue neither is suitable. MUTO only counts if I accept the transparency thesis, the claim that photographs allow us to literally see their depicta. Repopulate only counts if we reject Noel Carroll’s requirement that a cinematic performance token isn’t itself an artwork. However, these imperfect cases demonstrate what is required in order (...) to have cinematic street art: the artwork is a 1) aconsensual artwork that 2) does not merely use street art as imagery or 3) merely use the street as a performance space. I introduce two hypothetical artworks inspired by this approach and discuss their merits, as well as their pitfalls relevant to my own desiderata. As such, this article serves as the foment for broader discussion within the philosophy of street art. (shrink)

This is the full version of the Delphi Report on critical thinking and critical thinking instruction at the post-secondary level.

This is an accessible summary - online, The Well - 1st September 2023 - of concerns raised in my book 'The Myths We Live By' and my latest, 'How To Think Like a Philosopher: Scholars, Dreamers and Sages Who Can Teach Us How to Live'. -/- Herewith as PDF.

This paper argues against common views that at least in many cases Robert Nozick is not forced to deny common closure principles. More importantly, Nozick does not – despite first (and second) appearances and despite his own words – deny closure. On the contrary, he is defending a more sophisticated and complex principle of closure. This principle does remarkably well though it is not without problems. It is surprising how rarely Nozick’s principle of closure has been discussed. He should be (...) seen not so much as a denier of closure than as someone who’s proposing an alternative, more complex principle of closure. (shrink)