Although vision is the de facto model system of consciousness research, studying olfactory consciousness has its own advantages, as this collection of articles emphatically demonstrates. One advantage of olfaction is its computational and phenomenological simplicity, which facilitates the identification of basic principles. Other researchers study olfactory consciousness not because of its simplicity, but because of its unique features. Together, olfaction's simplicity and its distinctiveness make it an ideal system for testing theories of consciousness. In this research topic, the results of (...) recent research into olfactory consciousness are presented. (shrink)

Our sense of smell pervasively influences our most common behaviors and daily experience, yet little is known about olfactory consciousness. Over the past decade and a half research in both the fields of Consciousness Studies and Olfaction has blossomed, however, olfactory consciousness has received little to no attention. The olfactory systems unique anatomy, functional organization, sensory processes, and perceptual experiences offers a fecund area for exploring all aspects of consciousness, as well as a external perspective for re-examining the assumptions of (...) contemporary theories of consciousness. It has even been suggested that the olfactory system may represent the minimal neuroanatomy that is required for conscious processing. Here, we seek contributions that should serve as the foundation for future research concerning consciousness using olfaction as a model. -/- Given the variegated nature of research on consciousness, we seek original papers including review articles, original research, and theoretical contributions concerning the nature of olfactory consciousness. The scope of the special edition widely incorporates olfaction as it relates to Consciousness, Awareness, Attention, Phenomenal- or Access-Consciousness, and Qualia. Research concerning olfaction and cross-modal integration as it relates to conscious experience is also welcome. -/- As the initial foray into this uncharted area of research, we welcome contributions from across all disciplines contributing to cognitive neuroscience, including neurobiology, neurology, psychology, philosophy, linguistics, and computer sciences. It is our hope that this special edition will serve as the impetus for future interdisciplinary research on olfaction and consciousness. (shrink)

Andrea Cesalpino is an important figure in the history of science. He demonstrated that blood circulates into heart from veins and from the heart to arteries, paving the way to Harvey’s complete description of blood circulation. Moreover, he was the founder of botany as a systematic discipline, which he based, rather than on the observation of accidental similarities of plants, on the discovery of their vegetative-generative principle. In philosophy, he attempted to conciliate the immortality of the soul (i.e., the form (...) of the body) with the existence of a unique immaterial intellect, which is individuated and multiplied in the singular souls that participate to it. (shrink)

I will present and criticise the two theories of truthmaking David Armstrong offers us in Truth and Truthmakers (Armstrong 2004), show to what extent they are incompatible and identify troublemakers for both of them, a notorious – Factualism, the view that the world is a world of states of affairs – and a more recent one – the view that every predication is necessary. Factualism, combined with truthmaker necessitarianism – ‘truthmaking is necessitation’ – leads Armstrong to an all-embracing totality state (...) of affairs that necessitates not only everything that is the case but also everything else – that which is not the case, that which is merely possible or even impossible. All the things so dear to realists – rocks, natural properties, real persons – become mere abstractions from this ontological monster. The view that every predication is necessary does in some sense the opposite: it does away with totality states of affairs and, arguably, also with states of affairs. We have particulars and universals, partially identical and necessarily connected to everything else. Just by the existence of anything, everything is necessitated – the whole world mirrored in every monad. Faced with the choice between these two equally unappealing alternatives, I suggest returning to Armstrong’s more empiricist past: the world is not an all-inclusive One, nor necessitated by every single particular and every single universal, but a plurality of particulars and universals, interconnected by a contingent and internal relation of exemplification. While a close variant, truthmaker essentialism, can perhaps be saved, this means giving up on truthmaker necessitarianism. This, I think, what it takes to steer a clear empiricist course between the Scylla of Spinozist general factness and the Charybdis of a Leibnizian overdose of brute necessities. (shrink)

Accelerating global climate change drives new climate risks. People around the world are researching, designing, and implementing strategies to manage these risks. Identifying and implementing sound climate risk management strategies poses nontrivial challenges including (a) linking the required disciplines, (b) identifying relevant values and objectives, (c) identifying and quantifying important uncertainties, (d) resolving interactions between decision levers and the system dynamics, (e) quantifying the trade-offs between diverse values under deep and dynamic uncertainties, (f) communicating to inform decisions, and (g) learning (...) from the decision-making needs to inform research design. Here we review these challenges and avenues to overcome them. ▪ People and institutions are confronted with emerging and dynamic climate risks. ▪ Stakeholder values are central to defining the decision problem. ▪ Mission-oriented basic research helps to improve the design of climate risk management strategies. (shrink)

In her article, "Thinking and Moral Considerations," Hannah Arendt provides a provocative approach to the question of evil by suggesting that banal evil-the most common kind-may arise directly from thoughtlessness. If that is so, thinking may provide an antidote to evil. Learning to think would then offer the individual and society protection against the dangers of thoughtless evil. She further suggests that thinking may clear the way for a form of judging that "when the chips are down" may turn people (...) toward right rather than wrong, beauty rather than ugliness. In this essay I address her claim by noting an example of apparently thoughtless evil, the murder of Duncan by Macbeth, and by showing how this event clarifies Arendt's thesis, including both its weaknesses and its strengths. The use of Macbeth will amount to a sketch of certain features of the play particularly relevant to this ethical issue, followed by an analysis of ways Arendt's thesis connects with the murder of Duncan. (shrink)

The Theistic Argument from Intentionality (TAI) is a venerable argument for the existence of God from the existence of eternal truths. The argument relies, inter alia, on the premises that (i) truth requires representation, and that (ii) non-derivative representation is a function of, and only of, minds. If propositions are the fundamental bearers of truth and falsity, then these premises entail that propositions (or at least their representational properties) depend on minds. Although it is widely thought that psychologism—the view that (...) the fundamental truth-bearers are mind-dependent—was refuted by Frege, a psychologistic view of propositions has been undergoing a revival. However, this new psychologism suffers from a problem of scarcity—finite minds cannot generate enough thoughts to play the role of fundamental truth-bearers. This objection paves the way for a revised version of the TAI: only an infinite mind can furnish enough thoughts to play the role of propositions. (shrink)

God is typically conceived as perfectly good and necessarily so, in two senses: in terms of always performing the best possible act and in terms of having maximal moral worth. Yet any being that freely performs the best act she can must be accorded greater moral worth for any such action than a being that does so necessarily. I conclude that any being that performs the best possible act of necessity cannot also have maximal moral worth, making the concept of (...) God’s perfect goodness incoherent. (shrink)

The Council of Europe’s 2008 White Paper on Intercultural Dialogue: ‘living together as equals in dignity’ points to the need for shared values upon which intercultural dialogue might rest. In order, however, to overcome the monologic separateness that threatens community, we must educate ourselves to recognize the dialogism of our humanity and to engage in deep encounters with others with a mature skepticism of all dogmatisms, including our own. In order to aid us in reaching the necessary insight, the author (...) calls upon Bakhtin’s ideas of the dialogism of every utterance and of the unity and heteroglossia of language, Gadamer’s hermeneutical experience that shakes us loose from what we think we know, and Levinas’s description of that transcendent ideal of a dialogue beyond reciprocity. These perspectives break open our certainty that tribalism and individualism are fundamental, placing them instead as secondary phenomena that, though powerful, pronounce neither the initial nor the final word on our life together. (shrink)

This paper consists of a conversation between a philosopher specialising in ethics and religion and an educational researcher with an interest in cultural studies and contemporary social theory. Dialogic in form, this paper employs an interdisciplinary response to an interdisciplinary project and offers the following components: a dialogic theorizing of the implications for education of a research project on spiritual capital; a continuation of the project of analyzing moral thinking in various cultural and societal settings; a continuation of the project (...) of analyzing political rhetoric (towards an understanding of the polemics of political rhetoric); a reaffirmation of the value of recognizing difference and ambiguity in the global moment. (shrink)

It is true of many truths that I do not believe them. It is equally true, however, that I cannot rationally assert of any such truth both that it is true and that I do not believe it. To explain why this is so, I will distinguish absence of belief from disbelief and argue that an assertion of “p, but I do not believe that p” is paradoxical because it is indefensible, i.e. for reasons internal to it unable to convince. (...) A closer examination of the irrationality involved will show that such is the skeptic’s predicament, trying to convince us to bracket knowledge claims we have good grounds to take ourselves to be entitled to. Even if the sceptic cannot be proven wrong, his challenge still demands an answer, if not a treatment. In this paper, I argue that the cure lies in epidemiology rather than epistemology: instead of attacking the sceptic head-long, I commend guerilla tactics, vaccinating our fellow non-sceptics against the sceptical virus. I will not argue that the sceptic is wrong, necessarily wrong or that he cannot be believed, but that he cannot convince. Scepticism requires a leap of faith: something we may justifiably refrain from even on the sceptic’s own standards. (shrink)

I reassess the famous arguments of Frank Plumpton Ramsey (1925) against the tenability of the distinction between particulars and universals and discuss their recent elaboration by Fraser MacBride. I argue that Ramsey’s argument is ambiguous between kinds and properties and that his sceptical worries can be resolved once this distinction is taken into account. A crucial role in this dissolution is a notion of what is essential to a property. I close by some epistemological considerations.

I discuss voluntary belief in the context of a phenomenon unique to our current political moment: self- brainwashing. Using the very public QAnon movement as a case study, I argue that, although the conditions in which QAnon beliefs are formed is highly similar to those that produce false confessions, the QAnon believer and not the false confessor is morally and epistemically responsible because the former’s beliefs are voluntary: belief is voluntary when the believer has both the capacity and the opportunity (...) to revise their belief. I conclude that this voluntariness is because of the uniquely distributed, Internet-based nature of QAnon. (shrink)

Research on the ethics of algorithms has grown substantially over the past decade. Alongside the exponential development and application of machine learning algorithms, new ethical problems and solutions relating to their ubiquitous use in society have been proposed. This article builds on a review of the ethics of algorithms published in 2016, 2016). The goals are to contribute to the debate on the identification and analysis of the ethical implications of algorithms, to provide an updated analysis of epistemic and normative (...) concerns, and to offer actionable guidance for the governance of the design, development and deployment of algorithms. (shrink)

For computer simulation models to usefully inform climate risk management, uncertainties in model projections must be explored and characterized. Because doing so requires running the model many ti...

Laws are supposed to tell us how physical systems actually behave. The analysis of an important part of physical practice--abstraction--shows, however, that laws describe the behavior of physical systems under very special circumstances, namely when they are isolated. Nevertheless, laws are applied in cases of non-isolation as well. This practice requires an explanation. It is argued that one has to assume that physical systems have dispositions. I take these to be innocuous from an empiricist's standpoint because they can--at least in (...) principle--be measured. Laws can be applied whenever such a disposition is present, they describe how the physical system would behave if the disposition were manifest. (shrink)

El kitsch no es solo una categoría que ha definido una de las posibles gramáticas estéticas de la modernidad, sino también una dimensión antropológica que ha tenido diferentes configuraciones en el curso de los procesos históricos. El ensayo ofrece una mirada histórico-crítica sobre las transformaciones que condujeron desde el kitsch de principios del siglo XX hasta el neokitsch contemporáneo: desde la génesis del kitsch hasta su afirmación como una de las manifestaciones más tangibles de la cultura de masas. Integrándose con (...) la estética posmoderna, el kitsch se transforma en neokitsch, una estética que utiliza el kitsch como su propia sintaxis en el complejo escenario de la estética contemporánea. /// -/- Kitsch is not just a category that has defined one of the possible aesthetic grammars of modernity, but also an anthropological dimension that has had different configurations in the course of historical processes. The essay offers a historical-critical look at the transformations that led from the early twentieth century kitsch to the contemporary neokitsch: from the genesis of kitsch to its affirmation as one of the most tangible manifestations of mass culture. Integrating with postmodern aesthetics, kitsch turns into neokitsch, an aesthetic that deliberately uses kitsch as its own syntax in the complex scenario of contemporary aesthetics. (shrink)

Some authors have called for increased research on various forms of geoengineering as a means to address global climate change. This paper focuses on the question of whether a particular form of geoengineering, namely deploying sulfate aerosols in the stratosphere to counteract some of the effects of increased greenhouse gas concentrations, would be a just response to climate change. In particular, we examine problems sulfate aerosol geoengineering (SAG) faces in meeting the requirements of distributive, intergenerational, and procedural justice. We argue (...) that SAG faces obstacles to meeting the requirements of all three considered kinds of justice, because its impacts can harm some persons and communities much more than others; it poses serious risks to future generations; and SAG is especially prone to unilateral implementation. While we do not claim that SAG ought not to be implemented, we argue that it is the responsibility of proponents of SAG to recognize and address these ethical obstacles before advocating its implementation. (shrink)

In a recent piece, Jon Bebb (2023) has argued that we have no reason to believe, contrary to what is often assumed, that ‘normal’ is ambiguous between a statistical and a normative sense. I argue that his case rests on two false premisses, and that we have very good reasons to believe that ‘normal’ is, in fact, ambiguous in this way. As part of my argument, I will go on to suggest that if ‘normal’ is ambiguous between a statistical and (...) a normative sense, that is because of the deep but seldom recognised connection between regularities and rules. This suggestion, if correct, will in turn help us elucidate three familiar thoughts about normality. (shrink)

There are essentially two ways to develop the Peircean idea that future contingents are all false. One is to provide a quantificational semantics for "will," as is usually done. The other is to define a quantificational postsemantics based on a linear semantics for "will." As we will suggest, the second option, although less conventional, is more plausible than the first in some crucial respects. The postsemantic approach overcomes three major troubles that have been raised in connection with Peirceanism: the apparent (...) scopelessness of "will" with respect to negation, the failure of Future Excluded Middle, and the so-called zero credence problem. (shrink)

This paper argues that most of the alleged straight solutions to the sceptical paradox which Kripke ascribed to Wittgenstein can be regarded as the first horn of a dilemma whose second horn is the paradox itself. The dilemma is proved to be a by‐product of a foundationalist assumption on the notion of justification, as applied to linguistic behaviour. It is maintained that the assumption is unnecessary and that the dilemma is therefore spurious. To this end, an alternative conception of the (...) justification of linguistic behaviour is outlined, a conception that vindicates some of the insights behind Kripke's Wittgenstein's sceptical solution of the paradox. This alternative conception is defended against two objections (both familiar from McDowell's works): (1) that it would imply that for the linguistic community there is no authority, no standard to meet and, therefore, no possibility of error and (2) that it would lead to a kind of idealism. (shrink)

Notions of agency and of weakness of will clearly seem to be related to one another. This essay takes on a rather modest task in relation to current discussion of these topics; it seeks to establish the following claim: If A is a normal human agent, weakness of will is possible for A. The argument relies on demonstrating that certain necessary conditions for normal human agency are at least roughly equivalent to certain sufficient conditions for weakness of will. The connection (...) between agency and weakness of will is made through the use of an extended example that lays bare the links between the two. (shrink)

I respond to Chalmers’ (2006, 2010) objection to the Phenomenal Concept Strategy (PCS) by showing that his objection is faced with a dilemma that ultimately undercuts its force. Chalmers argues that no version of PCS can posit psychological features that are both physically explicable and capable of explaining our epistemic situation. In response, I show that what Chalmers calls ‘our epistemic situation’ admits either of a phenomenal or of a topic-neutral characterization, neither of which supports Chalmers’ objection. On the one (...) hand, if our epistemic situation is characterized phenomenally, then Chalmers’ demand that PCS should explain our epistemic situation is misplaced. PCS can explain our epistemic situation only if there is a reductive explanation of consciousness. But according to PCS, no reductive explanation of consciousness can be given. On the other hand, if our epistemic situation is characterized topic-neutrally, then PCS is not only physically explicable, but it also explains our epistemic situation. Either way, PCS is safe. (shrink)

This paper tries to get a grip on two seemingly conflicting intuitions about reductionism in quantum mechanics. On the one hand it is received wisdom that quantum mechanics puts an end to ‘reductionism’. Quantum-entanglement is responsible for such features of quantum mechanics as holism, the failure of supervenience and emergence. While I agree with these claims I will argue that it is only part of the story. Quantum mechanics provides us with thorough-going reductionist explanations. I will distinguish two kinds of (...) micro-explanation (or micro-‘reduction’). I will argue that even though quantum-entanglement provides an example for the failure of one kind of micro-explanation it does not affect the other. Contrary to a recent paper by Kronz and Tiehen I claim that the explanation of the dynamics of quantum mechanical systems is just as reductionist as it used to be in classical mechanics. (shrink)

We address the question whether there is an explanation for the fact that as Fodor put it the micro-level “converges on stable macro-level properties”, and whether there are lessons from this explanation for other issues in the vicinity. We argue that stability in large systems can be understood in terms of statistical limit theorems. In the thermodynamic limit of infinite system size N → ∞ systems will have strictly stable macroscopic properties in the sense that transitions between different macroscopic phases (...) of matter (if there are any) will not occur in finite time. Indeed stability in this sense is a consequence of the absence of fluctuations, as (large) fluctuations would be required to induce such macroscopic transformations. These properties can be understood in terms of coarse-grained descriptions, and the statistical limit theorems for independent or weakly dependent random variable describing the behaviour averages and the statistics of fluctuations in the large system limit. We argue that RNG analyses applied to off-critical systems can provide a rationalization for the applicability of these limit theorems. Furthermore we discuss some related issues as, for example, the role of the infinite-system idealization. (shrink)

It is often assumed that we are only blameworthy for that over which we have control. In recent years, however, several philosophers have argued that we can be blameworthy for occurrences that appear to be outside our control, such as attitudes, beliefs and omissions. This has prompted the question of why control should be a condition on blameworthiness. This paper aims at defending the control condition by developing a new conception of blameworthiness: To be blameworthy, I argue, is most fundamentally (...) to deserve to feel guilty. Being blamed by someone else is not necessarily harmful to the wrongdoer. The blame might not be expressed, or the wrongdoer might not care. But to blame oneself necessarily involves suffering. This conception of blameworthiness explains why the control condition should obtain: We are morally blameworthy for A only if A was under our control because to be blameworthy is to deserve to feel guilty, to feel guilty is to suffer, and one deserves to suffer for A only if A was under one’s control. (shrink)

In this paper, we propose a regularity theory of causation. The theory aims to be reductive and to align with our pre‐theoretic understanding of the causal relation. We show that our theory can account for a wide range of causal scenarios, including isomorphic scenarios, omissions, and scenarios which suggest that causation is not transitive.

This paper explores an idea of Stoic descent that is largely neglected nowadays, the idea that an argument is valid when the conditional formed by the conjunction of its premises as antecedent and its conclusion as consequent is true. As it will be argued, once some basic features of our naıve understanding of validity are properly spelled out, and a suitable account of conditionals is adopted, the equivalence between valid arguments and true conditionals makes perfect sense. The account of validity (...) outlined here, which displays one coherent way to articulate the Stoic intuition, accords with standard formal treatments of deductive validity and encompasses an independently grounded characterization of inductive validity. (shrink)

The essay contributes to the philosophical literature on emotions by advancing a detailed analysis of jadedness and by investigating whether jadedness can be subject to the various standards that are often thought to apply to our emotional states. The essay argues that jadedness is the affective experience of weariness, lack of care, and mild disdain with some object, and that it crucially involves the realisation that such an object was previously, but is no longer, significant to us. On the basis (...) of such a characterisation, jadedness is shown to be an affective call to restructure our commitments and values in a manner that we no longer assign any kind of significance to its object. Precisely because of its potential to affect our lives in such a fashion, jadedness is shown to carry philosophical, psychological, and even social importance. (shrink)

This paper examines the remarkable but not much analyzed phenomenon of anti-Cartesianism in the Weimar Republic, which was fueled by philosophers as well as by literary scholars, such as Ernst Robert Curtius. The outright rejection of Descartes needs to be seen within the context of the deep social and political crisis of a defeated Germany between the two World Wars. Rejection of rationality in favour of a perceived deeper German grasp of reality was part of the conservative backlash against the (...) national humiliation. Descartes as both the ‘father of modernity’ and the epitome of French ‘civilisation’ served as the perfect antagonist to what was extolled as the German authentic mode of being. Implanting this anti-Cartesianism into his nationalist elitist philosophical discourse Heidegger amplified it, and under the slogan “German philosophy resists” he channeled it into the national-socialist ideology. In a strange turn of events it was the surge of interest he encountered in post-war France that reestablished Heidegger’s intellectual standing and paved the road to his comeback in Germany around 1950. (shrink)

Judith Jarvis Thomson (1929-2020), philosophe américaine parmi les figures les plus marquantes dans l’étude de la normativité et de l’éthique, s’est éteinte ce 20 novembre à l’âge de 91 ans. Professeure émérite au MIT, sa carrière s’est étendue sur cinq décennies consacrées à la recherche, à l’enseignement et à la publication de plusieurs articles et ouvrages sur la nature des valeurs, des normes et des droits. Parmi ses ouvrages les plus importants, nous rappelons The Realm of Rights (1990), Goodness and (...) Advice (2001) et Normativity (2008). (shrink)

De se thoughts have traditionally been seen to be exceptional in mandating a departure from orthodox theories of attitudes. Against this, skeptics about the de se have argued that the de se phenomena demand no more of our theories of attitudes than traditional Frege cases. In this camp one view is that the de se can be accounted for by MOPs in the same way that MOPs can account for how it can be rational to believe, for instance, ”Hesperus is (...) shining” while also believing ”Phosphorus is shining.” This paper formulates some minimal conditions that de se MOPs must have in order to explain the relevant de se phenomena. Some potential replies are answered. I conclude that de se MOPs are not exceptional. (shrink)

This paper employs some outcomes (for the most part due to David Lewis) of the contemporary debate on the metaphysics of dispositions to evaluate those dispositional analyses of meaning that make use of the concept of a disposition in ideal conditions. The first section of the paper explains why one may find appealing the notion of an ideal-condition dispositional analysis of meaning and argues that Saul Kripke’s well-known argument against such analyses is wanting. The second section focuses on Lewis’ work (...) in the metaphysics of dispositions in order to call attention to some intuitions about the nature of dispositions that we all seem to share. In particular, I stress the role of what I call "Actuality Constraint". The third section of the paper maintains that the Actuality Constraint can be used to show that the dispositions with which ideal-condition dispositional analyses identify my meaning addition by "+" do not exist (in so doing, I develop a suggestion put forward by Paul Boghossian). This immediately implies that ideal-condition dispositional analyses of meaning cannot work. The last section discusses a possible objection to my argument. The point of the objection is that the argument depends on an illicit assumption. I show (1) that, in fact, the assumption in question is far from illicit and (2) that even without this assumption it is possible to argue that the dispositions with which ideal-condition dispositional analyses identify my meaning addition by "+" do not exist. (shrink)

Given certain well-known observations by Mach and Russell, the question arises what place there is for causation in the physical world. My aim in this chapter is to understand under what conditions we can use causal terminology and how it fi ts in with what physics has to say. I will argue for a disposition-based process-theory of causation. After addressing Mach’s and Russell’s concerns I will start by outlining the kind of problem the disposition based process-theory of causation is meant (...) to solve. In a second step I will discuss the nature of those dispositions that will be relevant for our question. In section 3 I will discuss existing dispositional accounts of causation before I proceed to present my own account (sections 4 to 6) and contrast it with traditional process-theories (section 7). (shrink)

This essay provides an analysis of the role of affectivity in Martin Heidegger's writings from the mid to late 1920s. We begin by situating his account of mood within the context of his project of fundamental ontology in Being and Time. We then discuss the role of Befindlichkeit and Stimmung in his account of human existence, explicate the relationship between the former and the latter, and consider the ways in which the former discloses the world. To give a more vivid (...) and comprehensive picture of Heidegger's account of mood, we focus on the experience of anxiety by articulating both its function within fundamental ontology and, relatedly, its revelatory nature. We conclude by considering the place of emotions in Heidegger's thinking from this period. In a companion essay, ‘Affectivity in Heidegger II: Temporality, Boredom, and Beyond’, we complement our present analysis by revisiting the issue of affectivity in terms of Heidegger's discussion of temporality in Division II of Being and Time. We also expand our present discussion by considering the fundamental mood of boredom and other specific moods that Heidegger considers within his later thinking. (shrink)

In "Essence and Modality", Kit Fine proposes that for a proposition to be metaphysically necessary is for it to be true in virtue of the nature of all objects whatsoever. Call this view Fine's Thesis. This paper is a study of Fine's Thesis in the context of Fine's logic of essence (LE). Fine himself has offered his most elaborate defense of the thesis in the context of LE. His defense rests on the widely shared assumption that metaphysical necessity obeys the (...) laws of the modal logic S5. In order to get S5 for metaphysical necessity, he assumes a controversial principle about the nature of all objects. I will show that the addition of this principle to his original system E5 leads to inconsistency with an independently plausible principle about essence. In response, I develop a theory that avoids this inconsistency while allowing us to maintain S5 for metaphysical necessity. However, I conclude that our investigation of Fine's Thesis in the context of LE motivates the revisionary conclusion that metaphysical necessity obeys the principles of the modal logic S4, but not those of S5. I argue that this constitutes a distinctively essentialist challenge to the received view that the logic of metaphysical necessity is S5. (shrink)