After presenting a negative characterization of metaphysical vagueness and the main tenets of the view of vagueness as semantic indecision, the paper critically discusses the objection that such a view requires that at least some vagueness not be just constituted by semantic indecision—but rather by the metaphysical vagueness of some semantic relations themselves submitted by Trenton Merricks and, more recently, Nathan Salmon.

After presenting a negative characterization of metaphysical vagueness and the main tenets of the view of vagueness as semantic indecision, the paper critically discusses the objection that such a view requires that at least some vagueness not be just constituted by semantic indecision—but rather by the metaphysical vagueness of some semantic relations themselves submitted by Trenton Merricks and, more recently, Nathan Salmon.

Donald Smith (2006) argues that if ‘I’ is indeed vague, and the view of vagueness as semantic indecision correct after all, then ‘I’ cannot refer to a composite material object. But his considerations would, if sound, also establish that ‘Tibbles,’ ‘Everest,’ or ‘Toronto,’ do not refer to composite material objects either—nor hence, presumably, to cats, mountains, or cities. And they can be resisted, anyway. Or so I argue.

Composite materialism, as I will understand it, is the view that human persons are composite material objects. This paper develops and investigates an argument, The Vague Singulars Argument, for the falsity of composite materialism. We shall see that cogent or not, the Vague Singulars Argument has philosophically significant ramifications.

This paper explores the relationships between Davidson's indeterminacy of interpretation thesis and two semantic properties of sentences that have come to be recognized recently, namely semantic incompleteness and semantic indecision.1 More specifically, I will examine what the indeterminacy thesis entails for sentences of the form 'By sentence S (or word w), agent A means that m' and 'Agent A believes that p.' My primary goal is to shed light on the indeterminacy thesis and its consequences. I (...) will distinguish two kinds of indeterminacy that have very different sources and very different consequences. But this does not purport to be an exhaustive study: there may well be other forms of indeterminacy that this .. (shrink)

This paper explores the relationships between Davidson's indeterminacy of interpretation thesis and two semantic properties of sentences that have come to be recognized recently, namely semantic incompleteness and semantic indecision. More specifically, I will examine what the indeterminacy thesis entails for sentences of the form ‘By sentence S, agent A means that m’ and ‘Agent A believes that p.’ My primary goal is to shed light on the indeterminacy thesis and its consequences. I will distinguish two (...) kinds of indeterminacy that have very different sources and very different consequences. But this does not purport to be an exhaustive study: there may well be other forms of indeterminacy that this paper does not address.I will first explain the phenomena of semantic incompleteness and semantic indecision, and then explore their relationships with the indeterminacy thesis. (shrink)

This paper motivates and explores an expressivist theory of vagueness, modelled on Allan Gibbard’s normative expressivism. It shows how Chris Kennedy’s semantics for gradable adjectives can be adjusted to fit into a theory on Gibbardian lines, where assertions constrain not just possible worlds but plans for action. Vagueness, on this account, is literally indecision about where to draw lines. It is argued that the distinctive phenomena of vagueness, such as the intuition of tolerance, can be explained in terms of (...) practical constraints on plans, and that the expressivist view captures what is right about several contending theories of vagueness. (shrink)

A number of prominent metaphysicians have recently defended a set of ideas which I will call ‘essentialist plenitude.’ Very roughly, and to a first approximation, essentialist plenitude says that wherever there is an object with properties P1, …, Pn there is in fact a plenitude of coincident objects that differ only in the distribution of essentiality and accidentality across P1, …, Pn (§1). The main purpose of this paper is to arouse the suspicion that essentialist plenitude may have far-reaching consequences (...) for the semantics of proper names. More specifically, I will argue that neither descriptivist nor causal theories of proper names work in a plenitude setting (§2). I will close by suggesting that our use of proper names may be thoroughly infected by semantic indecision about which among many coincident objects is referred to (§3). (shrink)

It has been argued that non-relativistic quantum mechanics is the best hunting ground for genuine examples of metaphysical indeterminacy. Approaches to metaphysical indeterminacy can be divided into two families: meta-level and object-level accounts. It has been shown :27–245, 2010. https://doi.org/10.1080/00048400903097786; Skow in Philosophical Quarterly 60:851–858, 2010) that the most popular version of the meta-level accounts, namely the metaphysical supervaluationism proposed by Barnes and Williams, fails to deal with quantum indeterminacy. Such a fact has been taken by many as a challenge (...) to adapt supervaluationism to quantum cases. In this paper, I will focus on the very last of these attempts, i.e. the situation semantics account proposed by Darby and Pickup. After having shown where quantum indeterminacy arises and having surveyed the assumptions endorsed by the participants of the debate, I turn to Darby and Pickup’s proposal. I argue that, despite the machinery introduced, their account still fails to account for quantum indeterminacy. After considering some possible counterarguments, I suggest in the conclusion that one can plausibly extend the argument to those meta-level approaches that treat quantum indeterminacy as worldly indecision. (shrink)

It’s not clear what supervaluationists should say about propositional content. Does a vague sentence, e.g., ‘Harry is bald’, express one proposition, or a barrage of propositions, or none at all? Or is the matter indeterminate? The supervaluationist canon is not decisive on the issue; authoritative passages can be cited in favor of each of the proposals just mentioned. Furthermore, some detractors have argued that supervaluationism is incapable of providing any coherent account of propositional content. This paper considers each of the (...) proposals for how many propositions are expressed by a vague sentence: none, some, all, or it’s indeterminate. Most of these proposals turn out to be unworkable in the metalanguage. I conclude that orthodox supervaluationists—those who identify truth with supertruth—must either relax the standard requirement that propositions be bivalent, or else alter the standard relation between sentences and propositions in which a sentence inherits its truth-conditions from the proposition it expresses. The best option going forward for the orthodox supervaluationist is perhaps the most surprising—amend the requirement that propositions be bivalent. I argue that propositions having supervaluational truth-conditions are best suited to fill the propositional roles in the semantic theory of a vague language. These propositions admit of truth-value gaps, and gappy propositions are controversial, but I argue that they earn their keep. (shrink)

Kilimanjaro is an example of what some philosophers would call a ‘vague object’: it is only roughly 5895 m tall, its weight is not precise and its boundaries are fuzzy because some particles are neither determinately part of it nor determinately not part of it. It has been suggested that this vagueness arises as a result of semantic indecision: it is because we didn’t make up our mind what the expression “Kilimanjaro” applies to that we can truthfully say (...) such things as “It is indeterminate whether this particle is part of Kilimanjaro”. After reviewing some of the limitations of this approach, I will propose an alternative account, based on a new semantic relation—multiple reference—capable of holding in a one-many pattern between a term and several objects in the domain. I will explain how multiple reference works, what differentiates it from plural reference and how it might be used to accommodate at least some aspects of our ordinary discourse about vague objects. (shrink)

The paper defends Gareth Evan's argument against vague identity "de re" from a criticism that quantum mechanics provides actual counter-examples to its validity. A more general version of Evans's argument is stated in which identity involving properties are not essential and it is claimed that the scientific facts as so far known are consistent with the Evansian thesis that indeterminacy in truth-value must always be due to semantic indecision.

There are certain metaphysically interesting arguments ‘from vagueness’, for unrestricted mereological composition and for four-dimensionalism, which involve a claim to the effect that idioms for unrestricted quantification are precise. An elaboration of Lewis’ argument for this claim, which assumes the view of vagueness as semantic indecision, is presented. It is argued that the argument also works according to other views on the nature of vagueness, which also require for an expression to be vague that there are different admissible (...) alternatives of the relevant sort, such as epistemicism, as defended by Williamson. Recent attempts to resist the argument are discussed and rejected. (shrink)

There are certain metaphysically interesting arguments ‘from vagueness’, for unrestricted mereological composition and for four‐dimensionalism, which involve a claim to the effect that idioms for unrestricted quantification are precise. An elaboration of Lewis’ argument for this claim, which assumes the view of vagueness as semantic indecision, is presented. It is argued that the argument also works according to other views on the nature of vagueness, which also require for an expression to be vague that there are different admissible (...) alternatives of the relevant sort, such as epistemicism, as defended by Williamson. Recent attempts to resist the argument are discussed and rejected. (shrink)

This paper offers a rejoinder to an argument by Schiffer against semantic accounts of vagueness (typically relying on supervaluationist techniques) based on indirect discourse. The argument, as far as I know original with Schiffer, occurs in “Two Issues of Vagueness” (Schiffer 1998). It is not addressed at supervaluationism as such, but at the philosophical account of vagueness which typically relies on it. Supervaluationism is not by itself a theory, but a logical technique with several applications. In one such application, (...) supervaluationism serves to alleviate a tension between, on the one hand, the rejection of bivalence for some utterances which characterizes what I take to be the correct view on vagueness (vagueness as semantic indecision – ‘VSI’ henceforth –, to put it in the terms of a well-known defender of the view, David Lewis), and, on the other, well-established facts about the semantics of logical expressions. I will address Schiffer’s argument by putting forward some considerations on the concept of de re thoughts which I take to undermine it. These considerations are not ad hoc, but highly germane to VSI; or so I will try to show. (shrink)

Peter Unger's puzzle, the problem of the many, is an argument for the conclusion that we are grossly mistaken about what kinds of objects are in our immediate surroundings. But it is not clear what we should make of Unger's argument. There is an epistemic view which says that the argument shows that we don't know which objects are the referents of singular terms in our language. There is a linguistic view which says that Unger's puzzle shows that ordinary singular (...) terms and count nouns are vague. Finally, there is an ontological view which says that the puzzle shows that there are vague objects. ;The epistemic view offers the simplest solution to the problem of the many, but runs foul of a different problem, the problem of vague reference. The problem of vague reference is that given the presuppositions of the epistemic view there are too many too similar objects that might be the reference of a name such as 'Kilimanjaro' for it to be plausible that the name has a determinate reference. The linguistic view, spelled out in terms of semantic indecision and supervaluation, offers the same solution to the problem of the many and to the problem of vague reference. But it leaves no room for de re beliefs about ordinary material object. The ontological view offers a solution to the problem of the many that avoids the problem of vague reference and the problem of de re beliefs. For these reasons it is preferable to the other two. ;However, ontological vagueness has met strong objections. It has been argued that it is a fallacy of verbalism, that it is inconsistent and that once formulated in a consistent way it is not distinguishable from the linguistic view. These objections can be met, but not without cost. To avoid the charge of being inconsistent, friends of the ontological view have to give up the law of excluded middle. ;A positive account of vague parthood has two parts. First, parthood is not primitive but dependent on other primitive facts. The most important of the primitive facts are about to what kinds objects belong and how objects are casually related. Second, sometimes the primitive facts fail do determine of two objects whether one is part of the other. Given a notion of vague parthood, a notion of vague object can be defined roughly in the following way: An object O is vague if there is an object a such that it is indeterminate whether a is part of O. (shrink)

Who should be diagnosed with intellectual disability and who should not? For borderline cases, the answer to this question may be as difficult to decide on as determining the borderline between being bald or not. While going bald may be upsetting to some, it is also an inevitable and relatively undramatic course of nature. In contrast, getting a diagnosis of intellectual disability is likely to have more far-reaching consequences. This makes the question of where the cutoff point for intellectual disability (...) lies more imperative. Philosophy of science may help psychologists to understand the nature of this dilemma in a more profound manner. This article builds on the sorites paradox to explore the vagueness that surrounds the concept of intellectual disability and the consequences of this vagueness for the diagnostic process. While epistemicists argue that vagueness is a consequence of our limited knowledge of the world that we live in, semantic theorists claim that there is nothing that we do not know, but that our language allows for indecisiveness. What these different lines of understanding mean for psychologists who are diagnosing intellectual disability, is described in this article. Furthermore, the article discusses practical implications of these philosophical underpinnings. (shrink)

Legal studies and consequently legal history focus on constitutional documents, believing in a nominalist autonomy of constitutional semantics.Reconsidering Constitutional Formation in the late 18th and 19th century, kept historic constitutions from being simply log-books for political experts through a functional approach to the interdependencies between constitution and public discourse. Sovereignty had to be 'believed' by the subjects and the political élites. Such a communicative orientation of constitutional processesbecame palpable in the 'religious' affinities of the constitutional preambles. They were held as (...) 'creeds' of a new order, not only due to their occasional recourse to divine authority, but rather due to the claim for eternal validity contexts of constitutional guarantees. The communication dependency of constitutions was of less concern in terms of the preamble than the constituents' big worries about government organisation. Their indecisiveness between monarchical and popular sovereignty was established through the discrediting of the Republic in the Jacobean reign of terror and the 'renaissance' of the monarchy in the military resistance against the French revolutionary and later Napoleonic campaigns. The constitutional formation as a legal act of constituting could therefore defend the monarchy from the threat of the people (Albertine Statute 1848), could be a legal decision of a national constituent assembly (Belgian Constitution 1831), could borrow from the old liberties (Polish May Constitution 1791) or try to remain in between by referring to the Nation as sovereign (French September Constitution 1791, Cádiz Constitution 1812). Common to all contexts is the use of national sovereignty as a legal starting point. The consequent differentiation between constituent and constituted power manages to justify the self-commitment of political power in legal terms. National sovereignty is the synonym for the juridification of sovereignty by means of the constitution. The novelty of the constitutions of the late 18th and 19th century is the normativity, the positivity of the constitutional law as one unified law, to be the measure for the legality of all other law. Therefore ReConFort will continue with the precedence of constitution. (www.reconfort.eu). (shrink)

The paper argues that the objects of belief should not be conceived as sets of possible worlds or propositions of set of centered possible worlds or egocentric propositions (this is the propositional conception), but rather as sets of pairs consisting of a centered world and a sequence of objects (this is the intentional conception of the objects of belief). The paper explains the deep significance of this thesis for the framework of two-dimensional semantics, indeed for any framework trying to adequately (...) relate semantics and epistemology (which is here construed as what I call the Congruence Principle). I give three arguments for this thesis, two preliminary indecisive ones by way of examples, and third theoretical one alluding to a deep principle of philosophical psychology (which I call the Invariance Principle). This paper is an improved and up-dated version of my paper No. 25. It will appear in Causation, Coherence, and Concepts. A Collection of Essays of mine. (shrink)