The paper provides to give a minimal contribution about a typical argumentation scheme which called "ad hominem". Especially, this mode of conduct a dialogue and arguing towards an opponent has been revisited by not long past approaches on Argumentation Theory with the aim to re-legitimate it in logical context and re-consider its consequences in terms of validity, consistence and alethic thinking. Ad hominem argument is part of rational discussion and informs audience about the coherence between speaker and his favored thesis.

This brief essay would want to point out the soft-law as an useful device to study in deep the legal phenomenon by problematizing it into our current socio-economical reality. Then, it aims to consider this expression of special legal normativity in order to revaluate the role of interpreters in qualifying sources of Law.

Based upon the concept of Law qualified in Monarchia, II.50, Dante was not only a general philosopher (a lover of knowledge) as well as a political disputant in his times, but also his primary contribution (not always obvious) in legal speculation could be demonstrated. In fact, if his thought reflected the platonic ordo sapientiae through a deep intersection between téchne and episteme (phronesis) toward a linguistic koiné, could we say the same thing on his concept of justice as a rational (...) ars boni et aequi? This essay aims to depict Dante as legal theorist of his times and theorist of Justice beyond them, adopting the hermeneutical point of view, not just as an interest into textual interpretation but referring his use of language as form of life and his works an inexhaustible sources of education for legal philosophy. (shrink)

An overview of hyperintensionality is provided. Hyperintensional languages have expressions with meanings that are more fine-grained than necessary equivalence. That is, the expressions may necessarily co-apply and yet be distinct in meaning. Adequately accounting for theories cast in hyperintensional languages is important in the philosophy of language; the philosophy of mind; metaphysics; and elsewhere. This entry presents a number of areas in which hyperintensionality is important; a range of approaches to theorising about hyperintensional matters; and a range of debates that (...) attention to hyperintensional constructions has generated. (shrink)

This book is both an introduction to and a research work on Meinongianism. “Meinongianism” is taken here, in accordance with the common philosophical jargon, as a general label for a set of theories of existence – probably the most basic notion of ontology. As an introduction, the book provides the first comprehensive survey and guide to Meinongianism and non-standard theories of existence in all their main forms. As a research work, the book exposes and develops the most up-to-date Meinongian theory (...) (called modal Meinongianism), applies it to specific fields, and discusses its open problems. Part I of the book provides a historical introduction to, and critical discussion of, the dominant philosophical view of existence: the “Kantian-Fregean-Quinean” perspective. Part II is the full-fledged introduction to the Meinongian theories of existence as a real property of individuals: after starting with the so-called naïve Meinongian conception and its problems, it provides a self-contained presentation of the main neo-Meinongian proposals, and a detailed discussion of their strengths and weaknesses. Part III develops a specific neo-Meinongian theory of existence employing a model-theoretic semantic framework. It discusses its application to the ontology and semantics of fictional objects, and its open problems. The methodology of the book follows the most recent trends in analytic ontology. In particular, the meta-ontological point of view is largely privileged. (shrink)

A counterpossible conditional is a counterfactual with an impossible antecedent. Common sense delivers the view that some such conditionals are true, and some are false. In recent publications, Timothy Williamson has defended the view that all are true. In this paper we defend the common sense view against Williamson’s objections.

Williamson has claimed that we assess counterfactuals 'If it were/had been that A, it would be/have been that C' primarily using a combination of two heuristics, both inconsistent: one for the indicative 'if' – essentially, a Ramsey Test for indicatives; one for 'would'. A better candidate for our primary way of assessing counterfactuals has been known for decades. Mathematical results guarantee that it doesn't have certain troubles of the heuristics invoked by Williamson; on some ways of fine-tuning, it may even (...) be rationally ideal. So calling it a 'heuristic' may be uncharitable. (shrink)

I want to model a finite, fallible cognitive agent who imagines that p in the sense of mentally representing a scenario—a configuration of objects and properties—correctly described by p. I propose to capture imagination, so understood, via variably strict world quantifiers, in a modal framework including both possible and so-called impossible worlds. The latter secure lack of classical logical closure for the relevant mental states, while the variability of strictness captures how the agent imports information from actuality in the imagined (...) non-actual scenarios. Imagination turns out to be highly hyperintensional, but not logically anarchic. Section 1 sets the stage and impossible worlds are quickly introduced in Sect. 2. Section 3 proposes to model imagination via variably strict world quantifiers. Section 4 introduces the formal semantics. Section 5 argues that imagination has a minimal mereological structure validating some logical inferences. Section 6 deals with how imagination under-determines the represented contents. Section 7 proposes additional constraints on the semantics, validating further inferences. Section 8 describes some welcome invalidities. Section 9 examines the effects of importing false beliefs into the imagined scenarios. Finally, Sect. 10 hints at possible developments of the theory in the direction of two-dimensional semantics. (shrink)

We present and defend the Australian Plan semantics for negation. This is a comprehensive account, suitable for a variety of different logics. It is based on two ideas. The first is that negation is an exclusion-expressing device: we utter negations to express incompatibilities. The second is that, because incompatibility is modal, negation is a modal operator as well. It can, then, be modelled as a quantifier over points in frames, restricted by accessibility relations representing compatibilities and incompatibilities between such points. (...) We defuse a number of objections to this Plan, raised by supporters of the American Plan for negation, in which negation is handled via a many-valued semantics. We show that the Australian Plan has substantial advantages over the American Plan. (shrink)

'Ontology and Metaontology: A Contemporary Guide' is a clear and accessible survey of ontology, focussing on the most recent trends in the discipline. Divided into parts, the first half characterizes metaontology: the discourse on the methodology of ontological inquiry, covering the main concepts, tools, and methods of the discipline, exploring the notions of being and existence, ontological commitment, paraphrase strategies, fictionalist strategies, and other metaontological questions. The second half considers a series of case studies, introducing and familiarizing the reader with (...) concrete examples of the latest research in the field. The basic sub-fields of ontology are covered here via an accessible and captivating exposition: events, properties, universals, abstract objects, possible worlds, material beings, mereology, fictional objects. The guide's modular structure allows for a flexible approach to the subject, making it suitable for both undergraduates and postgraduates looking to better understand and apply the exciting developments and debates taking place in ontology today. (shrink)

The Humean view that conceivability entails possibility can be criticized via input from cognitive psychology. A mainstream view here has it that there are two candidate codings for mental representations (one of them being, according to some, reducible to the other): the linguistic and the pictorial, the difference between the two consisting in the degree of arbitrariness of the representation relation. If the conceivability of P at issue for Humeans involves the having of a linguistic mental representation, then it is (...) easy to show that we can conceive the impossible, for impossibilities can be represented by meaningful bits of language. If the conceivability of P amounts to the pictorial imaginability of a situation verifying P, then the question is whether the imagination at issue works purely qualitatively, that is, only by phenomenological resemblance with the imagined scenario. If so, the range of situations imaginable in this way is too limited to have a significant role in modal epistemology. If not, imagination will involve some arbitrary labeling component, which turns out to be sufficient for imagining the impossible. And if the relevant imagination is neither linguistic nor pictorial, Humeans will appear to resort to some representational magic, until they come up with a theory of a ‘third code’ for mental representations. (shrink)

We present a theory of truth in fiction that improves on Lewis's [1978] ‘Analysis 2’ in two ways. First, we expand Lewis's possible worlds apparatus by adding non-normal or impossible worlds. Second, we model truth in fiction as belief revision via ideas from dynamic epistemic logic. We explain the major objections raised against Lewis's original view and show that our theory overcomes them.

I propose a comprehensive account of negation as a modal operator, vindicating a moderate logical pluralism. Negation is taken as a quantifier on worlds, restricted by an accessibility relation encoding the basic concept of compatibility. This latter captures the core meaning of the operator. While some candidate negations are then ruled out as violating plausible constraints on compatibility, different specifications of the notion of world support different logical conducts for negations. The approach unifies in a philosophically motivated picture the following (...) results: nothing can be called a negation properly if it does not satisfy Contraposition and Double Negation Introduction; the pair consisting of two split or Galois negations encodes a distinction without a difference; some paraconsistent negations also fail to count as real negations, but others may; intuitionistic negation qualifies as real negation, and classical Boolean negation does as well, to the extent that constructivist and paraconsistent doubts on it do not turn on the basic concept of compatibility but rather on the interpretation of worlds. (shrink)

A hyperintensional epistemic logic would take the contents which can be known or believed as more fine-grained than sets of possible worlds. I consider one objection to the idea: Williamson’s Objection from Overfitting. I propose a hyperintensional account of propositions as sets of worlds enriched with topics: what those propositions, and so the attitudes having them as contents, are about. I show that the account captures the conditions under which sentences express the same content; that it can be pervasively applied (...) in formal and mainstream epistemology; and that it is left unscathed by the objection. (shrink)

Against hyperintensional accounts of propositional contents, such as truthmaker semantics, impossible worlds semantics, structured propositions, and Fregean senses, Williamson has defended the Claim that such contents are to be taken as sets of possible worlds, resorting to guises while explaining away putative counterexamples as by-products of fallible cognitive heuristics. The workings of same-saying raise issues for the general applicability of the strategy: one can multiply ad libitum examples of co-intensional sentences saying different things, where guises won’t help the Claim, because (...) they make no relevant cognitive difference. Besides, this is not even a catastrophe for possible worlds semantics. (shrink)

_Framing effects_ concern the having of different attitudes towards logically or necessarily equivalent contents. Framing is of crucial importance for cognitive science, behavioral economics, decision theory, and the social sciences at large. We model a typical kind of framing, grounded in (i) the structural distinction between beliefs activated in working memory and beliefs left inactive in long term memory, and (ii) the topic- or subject matter-sensitivity of belief: a feature of propositional attitudes which is attracting growing research attention. We introduce (...) a class of models featuring (i) and (ii) to represent, and reason about, agents whose belief states can be subject to framing effects. We axiomatize a logic which we prove to be sound and complete with respect to the class. (shrink)

Pragmatic vindicatory genealogies provide both a cause and a rationale and can thus affect the space of reasons. But how far is the space of reasons affected by this kind of genealogical argument? What normative and evaluative implications do these arguments have? In this paper, I unpack this issue into three different sub-questions and explain what kinds of reasons they provide, for whom are these reasons, and for what. In relation to this final sub-question I argue, most importantly, that these (...) arguments are ambiguous about what they give us reasons for, meaning that they can be interpreted both as justifications for recognizing the normative standing of certain norms, values, and practices - and thus for living by them - and as excuses for those that do so. I illustrate this point by reference to the genealogical vindication of honour cultures, showing how the vindicatory argument can illuminate such case as one of excusing moral ignorance. Drawing on legal theory and moral philosophy, I show that different evaluative and normative implications hang on the result of the interpretation as either justification or excuse, and show that this ambiguity is a virtue rather than a limitation. (shrink)

Objective correlates—behavioral, functional, and neural—provide essential tools for the scientific study of consciousness. But reliance on these correlates should not lead to the ‘fallacy of misplaced objectivity’: the assumption that only objective properties should and can be accounted for objectively through science. Instead, what needs to be explained scientifically is what experience is intrinsically— its subjective properties—not just what we can do with it extrinsically. And it must be explained; otherwise the way experience feels would turn out to be magical (...) rather than physical. We argue that it is possible to account for subjective properties objectively once we move beyond cognitive functions and realize what experience is and how it is structured. Drawing on integrated information theory, we show how an objective science of the subjective can account, in strictly physical terms, for both the essential properties of every experience and the specific properties that make particular experiences feel the way they do. (shrink)

Manufacturing and industry practices are undergoing an unprecedented revolution as a consequence of the convergence of emerging technologies such as artificial intelligence, robotics, cloud computing, virtual and augmented reality, among others. This fourth industrial revolution is similarly changing the practices and capabilities of operators in their industrial environments. This paper introduces and explores the notion of the Operator 4.0 as well as how this novel way of conceptualizing the human operator necessarily implicates human values in the technologies that constitute it. (...) The design approach known as value sensitive design (VSD) is used to explore how these Operator 4.0 technologies can be designed for human values. Expert elicitation surveys were used to determine the values of industry stakeholders and examples of how the VSD methodology can be adopted by engineers in order to design for these values is illustrated. The results provide preliminary adoption strategies that industrial teams can take to Operator 4.0 technology for human values. (shrink)

Sentences \(\varphi\) and \(\psi\) are _cognitive synonyms_ for one when they play the same role in one’s cognitive life. The notion is pervasive (Sect. 1 ), but elusive: it is bound to be hyperintensional (Sect. 2 ), but excessive fine-graining would trivialize it and there are reasons for some coarse-graining (Sect. 2.1 ). Conceptual limitations stand in the way of a natural algebra (Sect. 2.2 ), and it should be sensitive to subject matters (Sect. 2.3 ). A cognitively adequate individuation (...) of content may be intransitive (Sect. 3 ) due to ‘dead parrot’ series: sequences of sentences \(\varphi _1, \ldots, \varphi _n\) where adjacent \(\varphi _i\) and \(\varphi _{i+1}\) are cognitive synonyms while \(\varphi _1\) and \(\varphi _n\) are not (Sect. 3.1 ). Finding an intransitive account is hard: Fregean equipollence won’t do (Sect. 3.2 ) and a result by Leitgeb shows that it wouldn’t satisfy a minimal compositionality principle (Sect. 3.3 )._Sed contra_, there are reasons for transitivity, too (Sect. 3.4 ). In Sect. 4, we come up with a formal semantics capturing this jumble of desiderata, thereby showing that the notion is coherent. In Sect. 5, we re-assess the desiderata in its light. (shrink)

We outline a neo-Meinongian framework labeled as Modal Meinongian Metaphysics (MMM) to account for the ontology and semantics of fictional discourse. Several competing accounts of fictional objects are originated by the fact that our talking of them mirrors incoherent intuitions: mainstream theories of fiction privilege some such intuitions, but are forced to account for others via complicated paraphrases of the relevant sentences. An ideal theory should resort to as few paraphrases as possible. In Sect. 1, we make this explicit via (...) two methodological principles, called the Minimal Revision and the Acceptability Constraint. In Sect. 2, we introduce the standard distinction between internal and external fictional discourse. In Sects. 3–5, we discuss the approaches of (traditional) Meinongianism, Fictionalism, and Realism—and their main troubles. In Sect. 6 we propose our MMM approach. This is based upon (1) a modal semantics including impossible worlds (Subsect. 6.1); (2) a qualified Comprehension Principle for objects (Subsect. 6.2); (3) a notion of existence-entailment for properties (Subsect. 6.3). In Sect. 7 we present a formal semantics for MMM based upon a representation operator. And in Sect. 8 we have a look at how MMM solves the problems of the three aforementioned theories. (shrink)

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

The idea of a distinctively political normativity came under sustained fire lately. Here I formulate, test, and reject a moderate and promising way of conceiving it. According to this conception, political normativity is akin to the kind of normativity at play in all-things-considered judgments, i.e., those judgments that weight together all the relevant reasons to determine what practical rationality as such requires to do. I argue that even when we try to conceive political normativity in this all-things-considered way, and even (...) when we do not concede from the get-go that moral reasons necessarily trump or override normative reasons of a different kind, political normativity is still reducible to morality, because the peculiar content of all-things-considered political oughts can be explained by the interplay of general moral principles and contextual facts that do not obtain exclusively in political scenarios. If my arguments are correct, I provide political realists with one more reason to withdraw from the metaethical battle over the idea of a distinctively political normativity and show that the moralist approach is defensible against a prima facie promising, but ultimately untenable, alternative. (shrink)

There is some consensus on the claim that imagination as suppositional thinking can have epistemic value insofar as it’s constrained by a principle of minimal alteration of how we know or believe reality to be – compatibly with the need to accommodate the supposition initiating the imaginative exercise. But in the philosophy of imagination there is no formally precise account of how exactly such minimal alteration is to work. I propose one. I focus on counterfactual imagination, arguing that this can (...) be modeled as simulated belief revision governed by Laplacian imaging. So understood, it can be rationally justified by accuracy considerations: it minimizes expected belief inaccuracy, as measured by the Brier score. (shrink)

A logic is called 'paraconsistent' if it rejects the rule called 'ex contradictione quodlibet', according to which any conclusion follows from inconsistent premises. While logicians have proposed many technically developed paraconsistent logical systems and contemporary philosophers like Graham Priest have advanced the view that some contradictions can be true, and advocated a paraconsistent logic to deal with them, until recent times these systems have been little understood by philosophers. This book presents a comprehensive overview on paraconsistent logical systems to change (...) this situation. The book includes almost every major author currently working in the field. The papers are on the cutting edge of the literature some of which discuss current debates and others present important new ideas. The editors have avoided papers about technical details of paraconsistent logic, but instead concentrated upon works that discuss more 'big picture' ideas. Different treatments of paradoxes takes centre stage in many of the papers, but also there are several papers on how to interpret paraconistent logic and some on how it can be applied to philosophy of mathematics, the philosophy of language, and metaphysics. (shrink)

I present an approach to our conceiving absolute impossibilities—things which obtain at no possible world—in terms of ceteris paribus intentional operators: variably restricted quantifiers on possible and impossible worlds based on world similarity. The explicit content of a representation plays a role similar in some respects to the one of a ceteris paribus conditional antecedent. I discuss how such operators invalidate logical closure for conceivability, and how similarity works when impossible worlds are around. Unlike what happens with ceteris paribus counterfactual (...) conditionals, the closest worlds are relevantly closest belief-worlds: closest to how things are believed to be, rather than to how they are. Also, closeness takes into account apriority and the opacity of intentional contexts. (shrink)

Scopo di questo agile ma denso volume è approfondire “The part played by the mathematical construction in the context of a full investigation of Kant’s theory of sensibility, that to say the Transcendental Aesthetic”. Si tratta della ripresentazione della tesi di dottorato della Shabel, da cui la stessa ha riportato ampi squarci per un articolo award-winning 1998 dal titolo ”Kant on the Symbolic Construction of Mathematical Concepts” (Studies in the History and the Philosophy of Science). Non si tratta di un (...) saggio di circostanza, bensì del risultato di un'attenta e approfondita ricerca sul ruolo della costruzione di concetti, come praticata e intesa in matematica al tempo di Kant e che sicuramente influenzò la stesura dell’Estetica Trascendentale. (shrink)

Is there a notion of contradiction—let us call it, for dramatic effect, “absolute”—making all contradictions, so understood, unacceptable also for dialetheists? It is argued in this paper that there is, and that spelling it out brings some theoretical benefits. First it gives us a foothold on undisputed ground in the methodologically difficult debate on dialetheism. Second, we can use it to express, without begging questions, the disagreement between dialetheists and their rivals on the nature of truth. Third, dialetheism has an (...) operator allowing it, against the opinion of many critics, to rule things out and manifest disagreement: for unlike other proposed exclusion-expressing-devices (for instance, the entailment of triviality), the operator used to formulate the notion of absolute contradiction appears to be immune both from crippling expressive limitations and from revenge paradoxes—pending a rigorous nontriviality proof for a formal dialetheic theory including it. (shrink)

We reply to various arguments by Otavio Bueno and Edward Zalta (‘Object Theory and Modal Meinongianism’) against Modal Meinongianism, including that it presupposes, but cannot maintain, a unique denotation for names of fictional characters, and that it is not generalizable to higher-order objects. We individuate the crucial difference between Modal Meinongianism and Object Theory in the former’s resorting to an apparatus of worlds, possible and impossible, for the representational purposes for which the latter resorts to a distinction between two kinds (...) of predication, exemplification and encoding. We show that encoding has fewer forerunners in the history of philosophy than Bueno and Zalta want, and that there’s a reason why the notion has been found baffling by some. (shrink)

In this paper, we take a meta-theoretical stance and aim to compare and assess two conceptual frameworks that endeavor to explain phenomenal experience. In particular, we compare Feinberg & Mallatt’s Neurobiological Naturalism (NN) and Tononi’s and colleagues' Integrated Information Theory (IIT), given that the former pointed out some similarities between the two theories (Feinberg & Mallatt 2016c-d). To probe their similarity, we first give a general introduction to both frameworks. Next, we expound a ground plan for carrying out our analysis. (...) We move on to articulate a philosophical profile of NN and IIT, addressing their ontological commitments and epistemological foundations. Finally, we compare the two point-by-point, also discussing how they stand on the issue of artificial consciousness. (shrink)

Starting from the ‘Dewey Lectures’, Rawls presents his conception of justice within a contextualist framework, as an elaboration of the basic ideas embedded in the political culture of liberal-democratic societies. But how are these basic ideas to be justified? In this article, I reconstruct and criticize Rawls’s strategy to answer this question. I explore an alternative strategy, consisting of a genealogical argument of a pragmatic kind – the kind of argument provided by authors like Bernard Williams, Edward Craig and Miranda (...) Fricker. I outline this genealogical argument drawing on Rawls’s reconstruction of the origins of liberalism. Then, I clarify the conditions under which this kind of argument maintains vindicatory power. I claim that the argument satisfies these conditions and that pragmatic genealogy can thus partially vindicate the basic ideas of liberal-democratic societies. (shrink)

An interpretation of Wittgenstein’s much criticized remarks on Gödel’s First Incompleteness Theorem is provided in the light of paraconsistent arithmetic: in taking Gödel’s proof as a paradoxical derivation, Wittgenstein was drawing the consequences of his deliberate rejection of the standard distinction between theory and metatheory. The reasoning behind the proof of the truth of the Gödel sentence is then performed within the formal system itself, which turns out to be inconsistent. It is shown that the features of paraconsistent arithmetics match (...) with some intuitions underlying Wittgenstein’s philosophy of mathematics, such as its strict finitism and the insistence on the decidability of any mathematical question. (shrink)

In this paper, I argue that one approach to normative political theory, namely contextualism, can benefit from a specific kind of historical inquiry, namely genealogy, because the latter provides a solution to a deep-seated problem for the former. This problem consists in a lack of critical distance and originates from the justificatory role that contextualist approaches attribute to contextual facts. I compare two approaches to genealogical reconstruction, namely the historiographical method pioneered by Foucault and the hybrid method of pragmatic genealogy (...) as practiced by Bernard Williams, arguing that they both ensure an increase in critical distance while preserving contextualism’s distinctiveness. I also show, however, that only the latter provides normative action-guidance and can thus assist the contextualist theorist in the crucial task of discerning how far certain contextual facts deserve their justificatory role. I prove this point by showing how a pragmatic genealogy of the practice of punishment can inform the contextualist’s reflection about the role this practice should play in a transitional scenario, i.e. in the set of circumstances societies go through in the aftermath of large-scale violence and human rights violations. (shrink)

In this paper I argue that Bykvist’s recent challenges to the fitting-attitude account of value (FA) can be successfully met. The challenge from solitary goods claims that FA cannot account for the value of states of affairs which necessarily rule out the presence of favouring subjects. I point out the modal reasons why FA can account for solitary goods by appealing to contemplative attitudes. Bykvist’s second challenge, the ‘distance problem’, questions the ability of FA to match facts about the intensity (...) of fitting attitudes and facts about value, particularly in the case of solitary goods. I argue that this challenge can be met by including the notion of a veil of ignorance in the formulation of FA, and understanding its role as bracketing the relevance of certain facts when determining the fittingness of attitudes to states of affairs. (shrink)

This paper defends a minimal principle of absolute non-vacuity: (AntiNull / IPN) □¬EmptyA, where EmptyA expresses absolute nothingness: no concrete or abstract entities, no modal or logical structures, no domains, interpretations, worlds, states, or facts of any kind exist. From AntiNull one immediately obtains a very weak but non-trivial form of necessary existence: (NECEX) □∃x(x = x) in standard first-order modal logic with non-empty domains, and (NECEX*) □∃x E!(x) in free logic with an existence predicate. The central claim is that (...) AntiNull is not a mere semantic stipulation about model domains, but a substantive metaphysical thesis, supported by a metasemantic theorem and several independent arguments, and compatible with a wide range of ontological positions (moderate platonism, proxy actualism, necessitism). Technically, the core result is a non-satisfiability theorem for absolute emptiness (NEAC: Nonsatisfiability / Non-Applicability of Emptiness Claim). Once we spell out the minimal semantic structure required to interpret a quantified modal language and implement an absolute reading of EmptyA, the formula EmptyA itself is unsatisfiable at any index of any admissible Kripke model; a fortiori, ◇EmptyA is unsatisfiable as well. I then generalize to a schema gNEAC that covers at least four families of modal semantics: first-order Kripke semantics, neighborhood semantics with an existential possibility operator, modal truthmaker semantics, and topological semantics for S4. Under a weak one-way Adequacy Bridge (AB) from metaphysical possibility to semantic realizability, NEAC yields AntiNull and hence NECEX/NECEX*. Four further lines of argument—minimal truthmaking for fundamental modal truths, a comparative cost analysis of theories of possible worlds, a transcendental reading of NEAC, and a dilemma about abstracta and noneism—converge on the same conclusion. The paper thus uses formally regimented modal semantics to settle a central metaphysical question concerning the possibility of absolute nothingness. (shrink)

Philosophical dialetheism, whose main exponent is Graham Priest, claims that some contradictions hold, are true, and it is rational to accept and assert them. Such a position is naturally portrayed as a challenge to the Law of Non-Contradiction (LNC). But all the classic formulations of the LNC are, in a sense, not questioned by a typical dialetheist, since she is (cheerfully) required to accept them by her own theory. The goal of this paper is to develop a formulation of the (...) Law which appears to be unquestionable, in the sense that the Priestian dialetheist is committed to accept it without also accepting something inconsistent with it, on pain of trivialism—that is to say, on pain of lapsing into the position according to which everything is the case. This will be achieved via (a) a discussion of Priest's dialetheic treatment of the notions of rejection and denial; and (b) the characterization of a negation via the primitive intuition of content exclusion. Such a result will not constitute a cheap victory for the friends of consistency. We may just learn that different things have been historically conflated under the label of 'Law of Non-Contradiction'; that dialetheists rightly attack some formulations of the Law, and orthodox logicians and philosophers have been mistaken in assimilating them to the indisputable one. (shrink)

We explore certain algebraic structures that naturally emerge within the framework of logics of synonymy, analytic containment, and hyperintensionality. In particular, we argue that Angell's logic AC, one of the earliest and most successful attempts to analyse the properties of logical constants with a topic-transformative character, can be better understood through a direct algebraic study of De Morgan bisemilattices. Inter alia, we study and compare the quasivarieties of De Morgan bisemilattices generated by certain finite algebras considered in the literature, viewed (...) as formalising different approaches to the validity of inferences among statements of synonymy. (shrink)

In this paper I articulate and respond to Kent Hurtig's objection to the fitting attitude account of value (FA). According to the objection, when a good or bad state of affairs is indexed to the actual world, but is such that the actual world does not contain anyone for whom it is fitting to (dis)favor it, it cannot be fitting for anyone in a non-actual world to (dis)favor it. So there are good or bad states of affairs that it is (...) not fitting for anyone to (dis)favor. First I comment on a solution proposed by Toni Rønnow-Rasmussen. Then I argue that if, due to their location in modal space, the relevant states of affairs cannot even be evaluated as good or bad (and a fortiori favored or disfavored) by readers, then such cases are dialectically powerless against FA; if, on the other hand, they can be evaluated as good or bad—despite their location in modal space—then they can also be favored or disfavored, and it will be fitting for us (if for no one else) to favor or disfavor them, thus defusing the challenge. (shrink)

In this paper we reply to arguments of Kroon (“Characterization and Existence in Modal Meinongianism”. Grazer Philosophische Studien 86, 23–34) to the effect that Modal Meinongianism cannot do justice to Meinongian claims such as that the golden mountain is golden, and that it does not exist.

The development of manufacturing technologies for new materials involves the generation of a large and continually evolving volume of information. The analysis, integration and management of such large volumes of data, typically stored in multiple independently developed databases, creates significant challenges for practitioners. There is a critical need especially for open-sharing of data pertaining to engineering design which together with effective decision support tools can enable innovation. We believe that ontology applied to engineering (OE) represents a viable strategy for the (...) alignment, reconciliation and integration of diverse and disparate data. The scope of OE includes: consistent capture of knowledge pertaining to the types of entities involved; facilitation of cooperation among diverse group of experts; more effective ongoing curation, and update of manufacturing data; collaborative design and knowledge reuse. As an illustrative case study we propose an ontology focused on the representation of composite materials focusing in particular on the class of Functionally Graded Materials (FGM) in particular. The scope of the ontology is to provide information about the components of such materials, the manufacturing processes involved in creation, and diversity of application ranging from additive manufacturing to restorative dentistry. The ontology is developed using Basic Formal Ontology (BFO) and the Ontology for Biomedical Investigations (OBI). (shrink)

We address an argument by Floridi (Synthese 168(1):151–178, 2009; 2011a), to the effect that digital and analogue are not features of reality, only of modes of presentation of reality. One can therefore have an informational ontology, like Floridi’s Informational Structural Realism, without commitment to a supposedly digital or analogue world. After introducing the topic in Sect. 1, in Sect. 2 we explain what the proposition expressed by the title of our paper means. In Sect. 3, we describe Floridi’s argument. In (...) the following three sections, we raise three difficulties for it, (i) an objection from intuitions: Floridi’s view is not supported by the intuitions embedded in the scientific views he exploits (Sect. 4); (ii) an objection from mereology: the view is incompatible with the world’s having parts (Sect. 5); (iii) an objection from counting: the view entails that the question of how many things there are doesn’t make sense (Sect. 6). In Sect. 7, we outline two possible ways out for Floridi’s position. Such ways out involve tampering with the logical properties of identity, and this may be bothersome enough. Thus, Floridi’s modus ponens will be our (and most ontologists’) modus tollens. (shrink)

This work develops a genealogical framework for the nomic structure of an Evolving Block Universe (EBU). The central idea is that: (i) there exists a minimal protological level L0, characterised by the act-type of total exclusion NON, devoid of any physical or nomic content; (ii) physical laws are neither eternal Platonic entities nor mere Humean summaries of the facts, but genealogical outputs of this logical core, fixed at the first emergence of new domains; and (iii) the growth of an EBU (...) universe does not consist only in the addition of events, but in the growth of a logical memory of resolved successions and genealogical laws, measured by a logical time ordered by L_type (normed types of succession) and L_token (integrated instances). Building on the results of For a Genealogy of Proto-Logic, I introduce the tripartition L0/L1/L2, characterise NON as a content-neutral global coherence constraint, and define the fixing of laws via the space of admissible extensions Adm(D,M) for each genealogically new domain D (three cases: empty / singleton / multiple). The resulting laws are historical and path-dependent, with a share of primitive nomic contingency but without optimisation metalaws of a best-system type. I then reformulate the EBU as the growth of the “domain of what has already been resolved”, discuss truthmaking for events and laws in this context, and compare the framework with Smolin’s precedence proposal, with Humean best-system theory, with nomic primitivism, and with dispositionalism. The aim is to show that one can have a universe with historical, non-Humean laws, without initial nomic chaos or rich meta-Platonism, and with a notion of logical time that does not introduce a “second” physical time. The paper is the fourth part of a four-paper project on the genealogical structure of logic, laws, and the universe. (shrink)

Rationalist accounts of the development of folk-psychology maintain that the acquisition of this capacity is aided by special-purpose mechanisms rich in innate structure. Rationalists have typically maintained that false-belief understanding (FBU) emerges very early on, before the age of two. To explain why young children nonetheless fail the false-belief task, rationalists have suggested that they may have troubles expressing their FBU. Here I do two things. First, I argue that extant proposals about what might prevent children from expressing their FBU (...) cannot explain some of the relevant data. Second, I put forward a new rationalist proposal, the processing-time account, according to which young children fail because they cannot carry out all the required processing in the time available. I argue that the processing-time account overcomes the challenges extant rationalist accounts face while being compatible with the evidence in their support, thereby providing a compelling explanation of the development of FBU. (shrink)

Tutti concordano che la conformità di un’azione ai dettami della morale non è sufficiente per conferirle valore morale. Tale valore dipende dalle motivazioni con cui l’agente la compie. L’azione giusta deve essere compiuta per le ragioni giuste. Ma quali ragioni sono quelle giuste? Kant ha una visione notoriamente restrittiva in merito: solo le azioni compiute esclusivamente per senso del dovere hanno valore morale. Diversi kantiani hanno optato per requisiti motivazionali a prima vista più indulgenti. Qui sostengo, tuttavia, che c’è un (...) problema comune a tutte queste concezioni: siccome è difficile soddisfare i loro requisiti e sapere quando sono soddisfatti, è difficile per l’agente sapere se le sue azioni hanno valore morale e se egli è quindi degno di lode. Questo problema costituisce una forma soggettiva di alienazione che si esprime in quella che chiamo “la sindrome dell’impostore morale”. Uso questo spunto per supportare una concezione alternativa del valore morale, modellata su una nozione di merito comune nella sfera non morale e meno esposta a questo problema. (shrink)

This paper starts from an extremely sparse ontology of one individual and properties, and asks how a structured world can emerge from the growth of instantiated structure. I work with a basic language of individuals and properties, a comprehension-like scheme for properties, and a minimal existence principle for individuals. Within this framework I prove a simple “from one to two” theorem: for any individual a there is a corresponding mirror property Ma that holds of exactly those individuals that are indistinguishable (...) from a in purely qualitative terms. I then construct configuration spaces built from a single individual a and admissible sets of properties, and show how a “prototime” can be read off the monotonic growth of instantiated structure: more instantiated properties correspond to “later” stages. On this basis I introduce ranked prototemporal frames and prove representation theorems: under a natural Richness Assumption on the property domain, every finite (and every countable) ranked frame can be represented as a configuration space of one individual plus properties. This provides a structural bridge between a minimal individuals-and-properties ontology and abstract orders of “growing structure”. The paper is the third part of a four-paper project on the genealogical structure of logic, laws, and the universe. It connects the protological work of For a Genealogy of Proto-Logic with the genealogical theory of laws and logical time in an Evolving Block Universe developed in The Genealogy of the Universe: Basic Logic, Logical Time, and Historical Laws. (shrink)

The traditional approach to the analysis of knowledge sees it as a true belief meeting further conditions. I discuss an empirical challenge to this traditional approach, which I call the argument from development. Briefly, the argument is that belief cannot be conceptually prior to knowledge because children acquire the concept of knowledge first. Several prominent scientists and philosophers have argued that this latter claim is supported by many findings with infants and young children. Here, I defend the traditional approach by (...) raising three challenges to the argument from development: the competence-performance challenge, the double-standard challenge, and the underdetermination challenge. I conclude that the developmental data are fully compatible with children acquiring the concept of belief first. In closing, I also argue that further research is needed to investigate when children acquire a concept of knowledge. (shrink)

This paper develops a “genealogy of proto-logic” starting from a single pre-logical act-type of total exclusion, NON, exercised in a situation of total absence of determined content (“nothing” in a purely metalinguistic sense). I distinguish three levels of discourse: L0, the protological level where only the act-type NON is available; L1, the level of formal logic (connectives, quantifiers, domains, etc.); and L2, the metatheoretic level at which we talk about L0 and L1. Working entirely at L2, I reconstruct a conceptual (...) path from repeated applications of NON_in_void to: (i) a minimal configuration C with an operational invariance C = C; (ii) a proto-identity x = x for the act-type NON; and (iii) a minimal domain D = {x} with an internal notion of existence (∃x(x = x)). The aim is not to offer a psychological or historical account of how agents actually acquired logical concepts, but to display a structural route from a very poor act of exclusion to familiar logical notions of identity, domain, and existence. Along the way I clarify the distinction between NON and the classical negation connective, and between “nothing” as an object and as a metalinguistic description of absence. The paper is the second part of a four-paper project on the genealogical structure of logic, laws, and the universe; it prepares the ground for a genealogical theory of laws and logical time in an Evolving Block Universe developed in The Genealogy of the Universe: Basic Logic, Logical Time, and Historical Laws. (shrink)

The key idea of this paper is that grounds are a special kind of reasons, so their logic is part of the logic of reasons. We outline a natural deduction calculus that provides a basic formal characterization of reasons and enables us to obtain some distinctive and relatively uncontentious principles about grounds. Then we show that the calculus outlined is consistent and decidable, which we take to be an interesting result in its own right.

The guise of the good is the thesis that an agent can only want, or intentionally do or pursue something, if and because this seems good to the agent in some respect or other. Bernard Williams criticizes the guise of the good in Ethics and the Limits of Philosophy. In this paper I reconstruct and assess his hitherto unnoticed critical remarks. Williams's opposition is based on the idea that it takes an “extra step” to go from desiring or pursuing something (...) to thinking of it as good. To show this, he employs an argument from elimination (with two strands: an argument from personal ends and an argument from immediate ends), and a separate argument which I call the one‐desire argument. I review and reject two types of answers to Williams's objections: answers that explore different varieties of what it can mean to “think of as good,” and answers that focus on different varieties of goodness under the guise of which one can desire something. I then consider whether a different, but nearby thesis, namely the guise of normative reasons, can accommodate Williams's objections, concluding that this alternative also fails. I end by looking at how this debate might move forward. (shrink)