Does the Ship of Theseus present a genuine puzzle about persistence due to conflicting intuitions based on “continuity of form” and “continuity of matter” pulling in opposite directions? Philosophers are divided. Some claim that it presents a genuine puzzle but disagree over whether there is a solution. Others claim that there is no puzzle at all since the case has an obvious solution. To assess these proposals, we conducted a cross-cultural study involving nearly 3,000 people across twenty-two countries, (...) speaking eighteen different languages. Our results speak against the proposal that there is no puzzle at all and against the proposal that there is a puzzle but one that has no solution. Our results suggest that there are two criteria—“continuity of form” and “continuity of matter”— that constitute our concept of persistence and these two criteria receive different weightings in settling matters concerning persistence. (shrink)

Based on a large cross-cultural study, David Rose and his colleagues (2020) argue that the Ship of Theseus story is a genuine puzzle in the sense that people who consider it feel inclined to assert two prima facie inconsistent propositions (Ambivalence). In response, Marta Campdelacreu and her colleagues (2020) argue that the data reported by Rose et al. (2020) fail to support Ambivalence. Namely, the data show sharp interpersonal disagreement among different readers of the Ship of (...) class='Hi'>Theseus story, but they fail to demonstrate an intrapersonal conflict or indecision. Should intrapersonal Ambivalence be demonstrated, this, according to Campdelacreu et al. (2020), would be a good indicator of the presence of a puzzle. Here, I provide empirical evidence for intrapersonal Ambivalence about the Ship of Theseus story. (shrink)

The story of the Ship of Theseus is one of the most venerable conundrums in philosophy. Some philosophers consider it a genuine puzzle. Others deny that it is so. It is, therefore, an open question whether there is or there is not a puzzle in the Ship of Theseus story. So, arguably, it makes sense to test empirically whether people perceive the case as a puzzle. Recently, David Rose, Edouard Machery, Stephen Stich and forty-two other researchers (...) from different countries have undertaken that task. We argue that their tests do not provide any evidence that bears on the question as to whether the Ship of Theseus case is a genuine puzzle. In our discussion we address also what should be taken into account if one wishes to test the puzzling, or not puzzling, status of the Ship of Theseus story. (shrink)

The American rock band KISS is notorious. Its notoriety derives not only from the band’s otherworldly costumes (except for of course during the unmasked period), the fact that they were inducted into the Rock and Roll Hall of Fame, their numerous hit records or the amazing stage theatrics and pyrotechnics of their live shows. It’s also related to the band’s constantly changing makeup (and I don’t mean the kind on their faces!). Of the four members, only Paul Stanley and Gene (...) Simmons were fixtures. With so many changes to the band’s composition, has KISS always remained the same band? Some see this head-scratcher as roughly similar to a conundrum in philosophical metaphysics (that’s the area of philosophy addressing problems of existence): the puzzle of Theseus’s ship. (shrink)

This paper outlines a novel solution to the Ship of Theseus puzzle. The solution relies on situations, a philosophical tool used in natural language semantics among other places. The core idea is that what is true is always relative to the situation under consideration. I begin by outlining the problem before briefly introducing situations. I then present the solution: in smaller situations the candidate is identical to Theseus’s ship. But in larger situations containing both candidates these (...) identities are neither true nor false. Finally, I discuss some worries for the view that arise from the nature of identity, and suggest responses. It is concluded that the solution, and the theory that underpins it, are worth further investigation. (shrink)

In this regular series Michael Clark, editor of the philosophy journal Analysis, presents a number of the most intriguing philosophical paradoxes. We begin with The Ship of Theseus.

In his recent book, Aquinas and the Ship of Theseus, Christopher Brown has argued that the metaphysics of St. Thomas is preferable to contemporary analyticviews because it can solve the “problem of material constitution” without requiring us to relinquish any of the common-sense beliefs that generate that problem. In this critical study, I show that in the case of both substances and aggregates, Brown’s Aquinas endorses views that are extremely implausible. Consequently, even if it is granted that the (...) solutions to the PMC fall right out of his views, it is still not clear that this gives us reason to prefer his ontology to its competitors. I also consider Brown’s take on the status of the human being after death. (shrink)

This paper is a review of 'Aquinas and the Ship of Theseus: Solving Puzzles about Material Objects' by Christopher M. Brown.

Locke thought that it was impossible for there to be two things of the same kind in the same place at the same time. I offer (what looks to me like) a counterexample to that principle, involving two ships in the same place at the same time. I then consider two ways of explaining away, and one way of denying, the apparent counterexample of Locke's principle, and I argue that none is successful. I conclude that, although the case under discussion (...) does not refute Locke's principle, it constitutes a serious challenge to it. (shrink)

Social individuals are social entities having a distinctive individuality, often signaled by the use of a proper name to designate them. This article proposes an account of social individuals based on the notion of a mental file, understood as a repository of information about a single individual. First, I consider a variant of the puzzle of the ship of Theseus in which the object having problematic identity conditions is a social individual, namely, a rock band. Then, I argue (...) that we can figure out such identity conditions by considering the mental files concerning this band. In conclusion, I outline a version of social constructionism according to which the existence of social individuals like bands depends on mental files about them. (shrink)

Edgington has proposed a degree-theoretic account of vagueness that yields a highly elegant solution to the sorites paradox. This paper applies her account to the paradox of Theseus’ ship, which is generally classified among the paradoxes of material constitution and not as a sorites paradox.

I do four things in responding to Patrick Toner’s incisive critique of my Aquinas and the Ship of Theseus (AST). First, I further motivate Aquinas’s position that Socrates exists in the post-mortem and ante-resurrection state by noting that Socrates’ situation is at least analogous to other states of affairs that would certainly count as atypical (although not impossible). Secondly, I offer a revised Thomistic account of artefact identity through time in light of Toner’s objections to Aquinas’srestrictive view. Unlike (...) the restrictive view, this revised account is compatible with common-sense intuitions. Thirdly, I show how my defense of Aquinas’s substance metaphysic in AST is useful for the purpose of constructing defeators for certain kinds of arguments for reductionism. Fourthly, I defend Aquinas’s views on the unity of substance against Toner’s suggestion that they are implausible on the grounds that they are in conflict with certain so-called “scientifically informed”common-sense beliefs. (shrink)

I do four things in responding to Patrick Toner’s incisive critique of my Aquinas and the Ship of Theseus (AST). First, I further motivate Aquinas’s position that Socrates exists in the post-mortem and ante-resurrection state by noting that Socrates’ situation is at least analogous to other states of affairs that would certainly count as atypical (although not impossible). Secondly, I offer a revised Thomistic account of artefact identity through time in light of Toner’s objections to Aquinas’srestrictive view. Unlike (...) the restrictive view, this revised account is compatible with common-sense intuitions. Thirdly, I show how my defense of Aquinas’s substance metaphysic in AST is useful for the purpose of constructing defeators for certain kinds of arguments for reductionism. Fourthly, I defend Aquinas’s views on the unity of substance against Toner’s suggestion that they are implausible on the grounds that they are in conflict with certain so-called “scientifically informed”common-sense beliefs. (shrink)

I do four things in responding to Patrick Toner’s incisive critique of my Aquinas and the Ship of Theseus (AST). First, I further motivate Aquinas’s position that Socrates exists in the post-mortem and ante-resurrection state by noting that Socrates’ situation is at least analogous to other states of affairs that would certainly count as atypical (although not impossible). Secondly, I offer a revised Thomistic account of artefact identity through time in light of Toner’s objections to Aquinas’srestrictive view. Unlike (...) the restrictive view, this revised account is compatible with common-sense intuitions. Thirdly, I show how my defense of Aquinas’s substance metaphysic in AST is useful for the purpose of constructing defeators for certain kinds of arguments for reductionism. Fourthly, I defend Aquinas’s views on the unity of substance against Toner’s suggestion that they are implausible on the grounds that they are in conflict with certain so-called “scientifically informed”common-sense beliefs. (shrink)

Is it possible for an individual that has gone out of being to come back into being again? The English Aristotelian, Thomas White, argued that it is not. Thomas Hobbes disagreed, and used the case of the Ship of Theseus to argue that individuals that have gone out of being may come back into being again. This paper provides the first systematic account of their arguments. It is doubtful that Hobbes has a consistent case against White. Still his (...) criticism may have prompted White to clarify his views on identity over time in his later work. (shrink)

Saul Kripke has convinced many of us that material things have their material origins essentially. Plutarch, through his Ship of Theseus story, has convinced many of us that material things can sometimes survive gradual replacements of their material parts, that they are materially nonrigid. By way of a series of counterexamples, I will argue that any attempt to specify what in particular is essential about material origins will founder on the phenomenon of material non-rigidity.

There are various puzzles that set our intuitions about composition and identity against one another. Four that are particularly well known are the Growing Argument, the Ship of Theseus Puzzle, the Body-minus Argument, and Allan Gibbard’s puzzle about Lumpl and Goliath. Such puzzles have received a great deal of attention in the literature over the past thirty years, and there is an impressive and growing variety of solutions available for each of them. Surprisingly, however, no one has really (...) discussed how all of the different puzzles, and their solutions, are interrelated. On the surface, they seem to raise different problems; but clearly the puzzles are related somehow. They raise similar questions and generate similar sets of possible solutions. But, as yet, nothing has been said about how far the similarities extend. (shrink)

[First paragraph] For a long time philosophers thought material objects were unproblematic. Or nearly so. There may have been a problem about what a material object is: a substance, a bundle of tropes, a compound of substratum and universals, a collection of sense-data, or what have you. But once that was settled there were supposed to be no further metaphysical problems about material objects. This illusion has now largely been dispelled. No one can get a Ph.D. in philosophy nowadays without (...) encountering the puzzles of the ship of Theseus, the statue and the lump, the cat and its tail complement', amoebic fission, and others. These problems are especially pressing on the assumption that we ourselves are material objects. (shrink)

The Ship of Theseus example raises problems about the sense that things such as tables and chairs exist and how they are able to change. It challenges traditional metaphysical notions about parthood and identity over time. When analyzed, it turns out that the issues raised by this example are fatal to traditional ontologies. I propose a process approach that does not discard the concept of matter entirely that both conforms to our commonsense intuitions about how the world is (...) and is able to adequately address the Ship of Theseus example. Under my theory, the Ship of Theseus actually includes the process that we would normally call a ship and the system of maintenance that is replacing the parts of the ship. I end by arguing that this is a com­monsensical view and respond to objections. (shrink)

Pre-Socratic -- Socrates (469-399 B.C.) -- Plato (429-347 B.C.) -- Existentialism -- Aristotle (384-322 B.C.) -- The ship of Theseus -- Francis Bacon (1561-1626) -- The cow in the field -- David Hume (1711-1776) -- Hedonism -- Prisoner's dilemma -- St. Thomas Aquinas (1225-1274) -- Hard determinism -- Jean-Jacques Rousseau (1712-1778) -- The trolley problem -- Realism -- Immanuel Kant (1724-1804) -- Dualism -- Utilitarianism -- John Locke (1632-1704) -- Empiricism versus Rationalism -- Georg Wilhelm Friedrich Hegel (1770-1831) (...) -- René Descartes (1596-1650) -- A-Theory -- The liar paradox -- Thomas Hobbes (1588-1679) -- Philosophy of language -- Metaphysics -- Jean-Paul Sartre (1905-1980) -- Free will -- Philosophy of humor -- The Enlightenment -- Friedrich Nietzsche (1844-1900) -- The Sorites paradox -- Ludwig Wittgenstein (1889-1951) -- Aesthetics -- Philosoph of culture -- Epistemology -- Twin Earth -- Arthur Schopenhauer (1788-1860) -- Karl Marx (1818-1883) -- Martin Heidegger (1889-1976) -- Voltaire (1694-1778) -- Relativism -- Eastern philosophy -- Avicenna (980-1037) -- Bertrand Russell (1872-1970) -- Phenomenology -- Nominalism -- Gottfried Wilhelm Leibniz (1646-1716) -- Ethics -- Philosophy of science -- Baruch Spinoza (1632-1677) -- Philosopy of religion. (shrink)

Thought experiment is one of the most widely-used and least understood techniques in philosophy. A thought experiment is a process of reasoning carried out within the context of a well-articulated imaginary scenario in order to answer a specific question about a non-imaginary situation. The aim of my dissertation is to show that both the powers and the limits of this methodology can be traced to the fact that when the contemplation of an imaginary scenario brings us to new knowledge, it (...) does so by forcing us to make sense of exceptional cases. ;The dissertation has five chapters: an introduction, three case studies and a conclusion. My main contention is that certain patterns of features which coincide only fortuitously may nonetheless play a central role in the organization of our concepts, and that to the extent that imaginary scenarios involve disruptions of these patterns, our first-order judgments about them are often distorted or even inverted. ;In the introduction and conclusion, I discuss the role of imaginary exceptions in the acquisition of new knowledge. I argue that appeal to imaginary cases is unavoidable because the world is neither maximally replete nor effortlessly navigable, and that appeal to exceptional cases is indispensable if we wish to avoid mistaking accidental regularities for regularities that reflect deeper truths about the world. ;In the first case study, I discuss a famous thought experiment of Galileo's, and I try to show that the guided contemplation of an imaginary scenario can provide us with new scientific knowledge in a way that argument alone cannot. In the second case study, I try to show that standard interpretations of the puzzle of the Ship of Theseus founder because they ignore the importance of the background norms against which we can make sense of local instances of extrinsically-determined identity. And in the third case study, I try to show that thought experiments in the personal identity literature are inconclusive because they disregard the explanatory role played by contingent facts about the ways human beings come into existence. (shrink)

The relationship of part to whole is one of the most fundamental there is, yet until now there has been no full-length study of this concept. This book shows that mereology, the formal theory of part and whole, is essential to ontology. Peter Simons surveys and criticizes previous theories, especially the standard extensional view, and proposes a more adequate account which encompasses both temporal and modal considerations in detail. This has far-reaching consequences for our understanding of such classical philosophical concepts (...) as identity, individual, class, substance and accident, matter, form, essence, dependence, and integral whole. It also enables the author to offer new solutions to long-standing problems surrounding these concepts, such as the Ship of Theseus Problem and the issue of mereological essentialism. The author shows by his use of formal techniques that classical philosophical problems are amenable to rigorous treatment, and the book represents a synthesis of issues and methods from the analytical tradition and from the older continental realist tradition of Brentano and the early Husserl. (shrink)

Advocates of occasional identity have two ways of interpreting putative cases of fission and fusion. One way—we call it the Creative view—takes fission to involve an object really dividing (or being replicated), thereby creating objects which would not otherwise have existed. The more ontologically parsimonious way takes fission to involve merely the ‘separation’ of objects that were identical before: strictly speaking, no object actually divides or is replicated, no new objects are created. In this paper we recommend the Creative approach (...) as the best way of dealing with certain problem cases involving teletransportation. Our considerations yield novel takes on psychological-continuity theories of personal identity and survival, and on the puzzle of Theseus' ship. (shrink)

Mereological nihilism is the view that no objects have proper parts. Despite how counter‐intuitive it is, it is taken quite seriously, largely because it solves a number of puzzles in the metaphysics of material objects – or so its proponents claim. In this article, I show that for every puzzle that mereological nihilism solves, there is a similar puzzle that (a) it doesn’t solve, and (b) every other solution to the original puzzle does solve. Since the solutions to the new (...) puzzles apply just as well to the old puzzles, the old puzzles provide no motivation to be a mereological nihilist. (shrink)

The special composition question is the question, ‘When do some things compose something?’ The answers to this question in the literature have largely been at odds with common sense, either by allowing that any two things compose something, or by denying the existence of most ordinary composite objects. I propose a new ‘series-style’ answer to the special composition question that accords much more closely with common sense, and I defend this answer from van Inwagen's objections. Specifically, I will argue that (...) the proposed answer entails the transitivity of parthood, that it is non-circular, and that it casts some light on the ancient puzzle about the Ship of Theseus. (shrink)

Nonphilosophers, if they think of philosophy at all, wonder why people work in metaphysics. After all, metaphysics, as Auden once said of poetry, makes nothing happen.1 Yet some very intelligent people are driven to spend their lives exploring metaphysical theses. Part of what motivates metaphysicians is the appeal of grizzly puzzles (like the paradox of the heap or the puzzle of the ship of Theseus). But the main reason to work in metaphysics, for me at least, is to (...) understand the shared world that we all encounter and interact with. And the shared world that we all encounter includes us self-conscious beings and our experience. The world that we inhabit is unavoidably a temporal world: the signing of the Declaration of Independence is later than the Lisbon earthquake; the Cold War is in the past; your death is in the future. There is no getting away from time. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Phaedra's Labyrinth as the Paradigm of Passion: Racine's Aesthetic Formulation of Mimetic Desire Jacques-Jude Lépine Haverford College The actual model of Racine's Phaedra is no more the one that he claims to follow in his preface than one ofthose which his critics have sought in vain to find in the works of his immediate predecessors.1 Indeed, the comparative reading ofRacine's last profane tragedy against his sources shows that Seneca (...) and Euripides only provided a very general framework, one might say a traditional theme, which Racine completely recasts on the level of the plot, structure, characters, poetic esthetics, and theatrical performance. On the other hand, the myth of Phaedra's involuntary passion for her stepson Hippolytus, the hunter who was supposed to be atavistically insensitive to erotic seduction, could very well have been reorganized on the basis of another mythological episode which precedes it, the killing of the Minotaur by Theseus in the Labyrinth. There are many explicit references to this episode throughout Racine's Phaedra. There are even more than a rich but strictly thematic critic has been able to detect (see Racine), underscoring the fundamental point of my essay that the intensely poetic character of the Labyrinth, and particularly its function as a fantastic spatial frame, is not simply of a decorative nature. In Racine's work, as in any other genuine literary masterpiece, there is a unity ofcontent and form. The many references to the Labyrinth are determinant for the very subject ofPhaedra, which is the representation of passion, the only subject of interest for Racine. In fact, I intend to demonstrate that Racine used the unique topography of the Labyrinth as a paradigm of the logic of the relationships between his ' These works are Garnier's "Hippolyte" (1573) and Quinault's "Bellérophon" (1671). 48Jacques-Jude Lépine characters because of its capacity for fully expressing the mimetic origin of passion, a decisive discovery the gradual stages towards which may be traced in all his previous works. The Monster Hunt as a Metaphor of the Dramatic Action In order to demonstrate this point, I will start from the textual data, even though it will be necessary to go beyond a simple inventory of the themes explicitly connected to the Labyrinth. The first of these themes is obviously the one of monstrosity. At some point in the play, all the main characters accuse themselves, or are accused, of being a monster (Barthes 115). The relationship between this moral monstrosity (expressed in ambiguous statements suggesting a physical sign) and the return of Theseus, whose numerous monster hunts Hippolytus recalls in the opening scene,2 is easy to see. As has been already noted, the theme of the monster hunt is present from beginning to end of the play, where the fight between Hippolytus and the sea monster occurs (see Jasenas). But the monsterpar excellence is the Minotaur, whose death at the hands of Theseus Phaedra recalls in a famous speech which serves to reveal her passion to Hippolytus through a series of substitutions in the original cast of characters: Oh, why were you too young top have embarked Within the ship that brought him [Theseus] to our shores? You would have been the monster's killer then, In spite of all the windings of his maze. To find your way in that uncertain dark, My sister would have armed you with the thread. But no! In this design I would have been Ahead of her, my sister! Me, not her, It would have been whom love at first inspired; And I it would have been, Prince, I, whose aid Had taught you all the Labyrinth's crooked ways. A single thread would not have been enough To satisfy your lover's fears for you. I would myself have wished to lead the way, And share the perils you were bound to face. Phaedra, into the Labyrinth, with you Would have descended, and with you returned, To safety, or with you have perished. (647-62) 2 See verses 73-90. References to Margaret Rawlings's translation of Phaedra will be given parenthetically in the text. The verse numbers refer to the French edition... (shrink)

Jacoby's influential opinion that the Atthidographers were part of the political discourse of the fourth century has been the subject of revision in recent years. His critics have argued that the genre of Atthidography is primarily antiquarian and that to look for partisan political attitudes in the Atthides is a mistake. An examination of the work of Kleidemos, however, reveals a coherent presentation of the Athenian past designed to vindicate the democratic constitution and to demonstrate the close connection between the (...) democracy and Athens' naval power. This emerges most clearly in Kleidemos's treatment of three important democratic heroes: Theseus, Kleisthenes, and Themistokles. By the fourth century, Theseus had already emerged as the most popular Athenian hero. His accomplishments were modeled in part on the deeds of Herakles and were recorded in vase painting and relief sculpture, and on the walls of the Stoa Poikile. Kleidemos presented a distinctive account of Theseus, emphasizing his role in founding the Athenian navy in preparation for the expedition to Krete. Kleidemos portrayed him as a leader capable of defending Athens and making peace with Athens' enemies, first the Kretans and later the Amazons. This is a king in the tradition of Euripides' Theseus in the Suppliants, the ruler of a free and democratic city. The connection between democratic leadership, Athenian might, and the naval power of Athens is also underscored in Kleidemos's handling of Kleisthenes. Again, the information provided by Kleidemos is distinctive, inasmuch as he reports that it was Kleisthenes who was responsible for the system of naukrariai, which he likens to the symmories of the fourth century. Unlike the version of the Ath. Pol., which imagines the Kleisthenic demes replacing the Solonian naukrariai, Kleidemos saw the demes and naukrariai as complementary divisions, the former organizing the state's resources for the upkeep of the navy, and the latter establishing the political basis for the democracy. Themistokles is also given unique treatment. Kleidemos records the anecdote according to which Themistokles was responsible for the Battle of Salamis because he found sufficient money to man the ships when the generals had run out of funds and had ordered the abandonment of the city. He used the disappearance of the gorgoneion of the statue of Athena as an excuse to ransack the baggage of the Athenians and collect enough wealth to pay the fleet. The story is as tendentious as the account in the Ath. Pol., which gives the credit to the Areopagos. Both versions demonstrate how Athens' past had become a battleground in the political debates of the mid-fourth century. Unlike the epitaphios logos with its emphasis on the eternal and unchanging glory of Athens, the "Atthis" of Kleidemos attempted to prove that the greatness of Athens rested historically on three foundations: the heroes of the democracy, the democratic constitution, and the navy. (shrink)

In his description of the boat race in the fifth book of the "Aeneid", Vergil's comparison of the ships to chariots can be read not only as an allusion to the Homeric model on which the scene is based but also as part of a larger attempt to recast the episode as a contemporary circus spectacle. Like the Augustan circus, Vergil's boat race offers an image of cosmic and political order. However, beyond its symbolic function the Roman circus also played (...) an active role in realizing the hierarchies it depicted by incorporating its spectators into a unified vision of state and universe. So the boat race too, far from constituting a hiatus in the action of the poem, becomes an instrument for the socialization of those who watch it. The spectacle gives its audience a glimpse of the gods in action and of the leadership of Aeneas himself, whose past accomplishments are reflected in the conduct of the captains. Moreover, the careful organization of internal audiences within the narrative allows every spectator to identify with another figure closer to the center of events and, by extension, invites Vergil's own readers to see themselves as participants in the scene. Thus Vergil uses the model of circus spectacle to bridge the gap separating his audience from the epic past by restaging that past in a form that both was a part of the immediate experience of the contemporary Roman and also provided a crucial context for the constitution of Roman civic life. (shrink)

Many philosophy majors are shocked by the gap between the relative ease of lower-level philosophy courses and the difficulty of upper-division courses. This book serves as a necessary bridge to upper-level study in philosophy by offering rigorous but concise and accessible accounts of basic concepts and distinctions that are used throughout the discipline. It serves as a valuable advanced introduction to any undergraduate who is moving into upper-level courses in philosophy. While lower-level introductions to philosophy usually deal with popular topics (...) accessible to the general student in a piecemeal fashion, The Philosophy Major's Introduction to Philosophy offers coverage of important general philosophical concepts, tools, and devices that may be used for a long time to come in various philosophical areas. The volume is helpfully divided between a focus on the relation between language and the world in the first three chapters and coverage of mental content in the final two chapters, but builds a coherent narrative from start to finish. It also provides ample study questions and helpful sign-posts throughout, making it a must-have for any student attempting to engage fully with the problems and arguments in philosophy. Key Features Integrates topics from various areas of philosophy, such as philosophy of language, metaphysics, epistemology, ethics, and philosophical logic Provides descriptions of logico-mathematical tools necessary for philosophical studies, such as propositional logic, predicate logic, modal logic, set theory, mereology, and mathematical functions Makes connections with modern philosophy, including discussions of Descartes's skepticism and dualism, Locke's theory of personal identity, Hume's theory of causation, and Kant's synthetic a priori. Includes well-known entertaining puzzles and thought experiments such as the Ship of Theseus, the Statue and the Clay, a Brain in a Vat, and Twin Earth Lists helpful Exercise Questions and Discussion Questions at the end of each chapter and answers selected questions at the back of the book. (shrink)

ln "Possibilities and the Arguments for Origin Essentialism" Teresa Robertson (1998) contends that the best-known arguments in favour of origin essentialism can succeed only at the cost of violating modal common sense—by denying that any variation in constitution or process of assembly is possible. Focusing on the (Kripke-style) arguments of Nathan Salmon and Graeme Forbes, Robertson shows that both founder in the face of sophisticated Ship of Theseus style considerations. While Robertson is right that neither of the arguments (...) is compelling as formulated, each can be modified to fend off her particular counterexamples; these modifications do not differ in kind from those already needed to deal with ordinary Theseus cases, requiring only a further narrowing of the sufficiency clause from which the necessity of origins is derived. (shrink)

One familiar form of argument for rejecting entities of a certain kind is that, by rejecting them, we avoid certain difficult problems associated with them. Such problem-avoidance arguments backfire if the problems cited survive the elimination of the rejected entities. In particular, we examine one way problems can survive: a question for the realist about which of a set of inconsistent statements is false may give way to an equally difficult question for the eliminativist about which of a set of (...) inconsistent statements fail to be 'factual'. Much of the first half of the paper is devoted to explaining a notion of factuality that does not imply truth but still consists in 'getting the world right'. The second half of the paper is a case study. Some 'compositional nihilists' have argued that, by rejecting composite objects (and so by denying the composition ever takes place), we avoid the notorious puzzles of coincidence, for example, the statue/lump and the ship of Theseus puzzles. Using the apparatus developed in the first half of the paper, we explore the question of whether these puzzles survive the elimination of composite objects. (shrink)

The paper takes off from the problem of finding a proper content for the relation of identity as it holds or fails to hold among ordinary things or substances. The necessary conditions of identity are familiar, the sufficient conditions less so. The search is for conditions at once better usable than the Leibnizian Identity of Indiscernibles (independently suspect) and strong enough to underwrite all the formal properties of the relation.It is contended that the key to this problem rests at the (...) level of metaphysics and epistemology alike with a sortalist position. Sortalism is the position which insists that, if the question is whether a and b are the same, it has to be asked what are they? Any sufficiently specific answer to that question will bring with it a principle of activity or functioning and a mode of behaviour characteristic of some particular kind of thing by reference to which questions of persistence or non-persistence through change can be adjudicated.These contentions are illustrated by reference to familiar examples such as the human zygote, the Ship of Theseus and Shoemaker's Brown-Brownson. The first example is hostage for a mass of unproblematical cases. The problems presented by the second and third sort of examples arise chiefly (it is claimed) from an incompleteness in our conceptions of the relevant sort—the what the thing in question is. That incompleteness need not prevent us from knowing perfectly well which thing we are referring to. In the concluding section, sortalism is defended against various accusations of anthropocentrism.The paper touches on the interpretation of Heraclitus, Leibniz's theory of clear indistinct ideas, the difficulties of David Lewis's ‘perdurantist’ or stroboscopic view of persistence, four-dimensionalism, and the relation of personal identity both to experiential memory and to the particular bodily physiognomy of a subject. At some points—as in connection with the so-called Only a and b rule—the paper corrects, supplements or extends certain theses or formulations proposed in the author's Sameness and Substance Renewed (2001). (shrink)