Beginning in the 1990s, the medieval historiography has devoted increasing attention to the presence of thought experiments in the medieval philosophical sources. Following the line drawn by King, Perler, Grellard and Marenbon studies, this paper aims to use the concept of thought experiment as an historiographical category to explore the issues of Peter Damian’s dilemma, in the chapter I of De divina omnipotentia, about the capacity of the divine power to restore the virginity of a maiden who has (...) lost it. In this perspective, the case of the virgin appears as a counterfactual scenario, that makes us understand how the question is not metaphysical but fundamentally epistemological. Peter Damian is not discussing about possible boundaries of God’s nature: he is rather arguing about the inability of the dialectic arguments to explain the omnipotence, in an attempt to define the cognitive and linguistic modes under which the human intellect could comprehend the virgin’s dilemma. The crucial step is the shift from possibilitas – intended as a statistical approach to the possible as “potential” – to potentia as a metaphysical attribute, regardless of her actualization: in this way, Peter Damian lifts the question up from the level of the human will, which often fails to grasp his objects, to the divine form of the will, which unfailingly achieves his objectives. (shrink)

The systems studied in the special sciences are often said to be causally autonomous, in the sense that their higher-level properties have causal powers that are independent of the causal powers of their more basic physical properties. This view was espoused by the British emergentists, who claimed that systems achieving a certain level of organizational complexity have distinctive causal powers that emerge from their constituent elements but do not derive from them. More recently, non-reductive physicalists have espoused a similar view (...) about the causal autonomy of special-science properties. They argue that since these properties can typically have multiple physical realizations, they are not identical to physical properties, and further they possess causal powers that differ from those of their physical realisers. Despite the orthodoxy of this view, it is hard to find a clear exposition of its meaning or a defence of it in terms of a well-motivated account of causation. In this paper, we aim to address this gap in the literature by clarifying what is implied by the doctrine of the causal autonomy of special-science properties and by defending the doctrine using a prominent theory of causation from the philosophy of science. (shrink)

The (dis)continuism debate in the philosophy and cognitive science of memory concerns whether remembering is continuous with episodic future thought and episodic counterfactual thought in being a form of constructive imagining. I argue that settling that dispute will hinge on whether the memory traces (or “engrams”) that support remembering impose arational, perception-like constraints that are too strong for remembering to constitute a kind of constructive imagining. In exploring that question, I articulate two conceptions of memory traces—the replay theory and the (...) prop theory—that return conflicting answers to whether remembering is constructive imagining. The prop theory’s vision of traces is suggestive of continuism, while the replay theory’s is a natural fit for discontinuism. Which view of traces is in fact correct remains undetermined by current empirical work. Nevertheless, it may already be possible to reach a compromise in the (dis)continuism debate, through the development of a conciliatory continuist causal theory. This view—only outlined here—accepts the continuism-friendly prop theory of traces, while still requiring that genuine remembering fulfills an appropriate causation condition, as required by the kinds of causal theories of remembering typically favored by discontinuists. (shrink)

Ernest Sosa and others have proposed a safety condition on knowledge: If S knows p, then in the nearest (non-actual) worlds in which S believes p, p is true.1 Colloquially, this is the idea that knowing requires not being easily mistaken. Here, I will argue that like another condition requiring a counterfactual relation between a subject’s belief and the world, viz. Robert Nozick’s sensitivity condition, safety leads, in certain cases, to the unacceptable result that knowledge is not closed under known (...) implication. (shrink)

Several conditions for being an intrinsically intentional agent are put forward. On a first level of intentionality the agent has representations. Two kinds are described: cued and detached. An agent with both kinds is able to represent both what is prompted by the context and what is absent from it. An intermediate level of intentionality is achieved by having an inner world, that is, a coherent system of detached representations that model the world. The inner world is used, e.g., for (...) conditional and counterfactual thinking. Contextual or indexical representations are necessary in order that the inner world relates to the actual external world and thus can be used as a basis for action. To have full-blown intentionality, the agent should also have a detached self-awareness, that is, be able to entertain self-representations that are independent of the context. (shrink)

Peter van Inwagen famously offers a version of the luck objection to libertarianism called the ‘Rollback Argument.’ It involves a thought experiment in which God repeatedly rolls time backward to provide an agent with many opportunities to act in the same circumstance. Because the agent has the kind of freedom that affords her alternative possibilities at the moment of choice, she performs different actions in some of these opportunities. The upshot is that whichever action she performs in the actual-sequence (...) is intuitively a matter of mere chance. I explore a new response to the Rollback Argument. If there are true counterfactuals of libertarian freedom, then the agent performs the same action each time she is placed in the same circumstance, because that is what she would freely do in that circumstance. This response appears to negate the chancy intuition. Ultimately, however, I argue that this new response is unsuccessful, because there is a variant of the Rollback Argument that presents the same basic challenge to the libertarian on the assumption that there are true counterfactuals of libertarian freedom. Thus, true counterfactuals of libertarian freedom do not provide the libertarian with a solution to the Rollback Argument. (shrink)

In literature Peter Damian has been often presented as an anti-dialectic thinker. Over time this statement has been subjected to careful historiographical revision. Today it is commonly accepted that the distinction between dialectic and anti-dialectic thinkers only partially describes the state of philosophy in the eleventh century. In fact, the relation between faith and reason is complex in Damian. The purpose of this paper is to reconsider this relation in the light of the significance Damian attributes (...) to the notion of contradiction. Reason must respect the principle of non-contradiction not only when it describes the natural world, but also when it explores the dimension of the mysteries of faith. (shrink)

Peter Damian’s letter 119 De divina omnipotentia is characterized by two main issues: the dilemma about the God’s capacity to restore virginity to a woman and the question about the possibility of undoing the past. Despite the interweaving between these topics, they have to be distinguished in several respects. Aim of the paper will be, firstly, to isolate the two questions, starting with their textual loci; secondly, to focus on the dilemma about the divine capacity to undoing the (...) past, showing that the key of Peter Damian’s argument is the concept of eternity as an epistemic principle, that allows him to define the omnipotence, in the case of the action on temporal necessity, as a sort of second level property of God; finally, to compare the Damian’s solution with some contemporary theories, developed during the debate on omnipotence in the second half of the 20th century, in order to find continuity and discontinuity factors that can help to better understand the coherence and effectiveness of medieval and contemporary arguments. (shrink)

This essay analyses Peter Damian’s idea of perfection, by taking into account his texts devoted to the eremitic conversatio avellanita: in particular, Epistles 18, 50, and 109. It answers to the following working question: how is it possible to achieve an ‘angelic’ condition? Particular attention is paid to the ideas of time, space and ascesis.

The epistle 49 by Peter Damian contains an original allegorical interpretation of the Jewish Sabbath as a day of rest, enriched by a mystical exegesis of the biblical Hexameron, in which the six days of creation correspond to the inner journey of man called to intimately unite with God. Peter Damian expresses this process of deification through the two images of man as microcosm and sovereign of creation and man as temple of God. The main source (...) of Damian’s text seems to be the De natura hominis by Nemesius of Emesa, which he knows thanks to the translation of Alfanus I of Salerno, one of the recipients of the epistle: this is confirmed by textual evidences, but also by a preliminary historical and historiographic reconstruction of the clue of friendship that binds Peter Damian to the archbishop of Salerno. (shrink)

This essay examines the way in which the modal concept of necessity was discussed and analyzed in some eleventh- and early twelfth-century sources, such as Peter Damian’s De divina omnipotentia, Anselm of Canterbury’s Cur deus homo and several anonymous commentaries on Aristotle’s De interpretatione that were presumably composed in the first two decades of the twelfth century by logicians connected to William of Champeaux’s and Peter Abelard’s milieu. My aim is to offer a comparison of these different (...) sources with respect to their use of the Boethian distinction between two types or kinds of necessity, namely, the “absolute” or “simple” necessity that is involved in statements like “God is necessarily immortal” or “it is necessary for humans to be animals”, and the “conditional” or “temporal” necessity that is at stake when we say, for instance, that someone necessarily walks when he is walking. (shrink)

This article proposes an analysis of the use and value of the terms ‘philosophia’ and ‘philosophus’ in Peter Damian’s works. Despite a remarkable number of ‘negative’ occurrences, the two words are also used in a ‘positive’ sense, especially in the sermo VI, devoted to the figure of Saint Eleuchadius, a pagan philosopher who converted himself to the Christian truth and put his intellectual competencies at the service of the Church. Contradicting the standard image of Peter Damian (...) as ‘anti-dialectician’, Eleuchadius’ case shows how the cardinal-bishop of Ostia could accept the idea of a Christian philosopher, following the Augustinian interpretation of the biblical “Gold of the Egyptians”. (shrink)

Dominus Vobiscum is undoubtedly one of Peter Damian’s most original works, and has experienced a renewed interest thanks to the re-emergence of the ecclesiology of communion around Vatican II, but in-depth studies of the work as a whole are missing and its sources seem quite limited. In this analysis of the text and its argumentative structure, the conceptual development is built on the dialectic of contrasts, starting from the binomial of “solitudo pluralis” and “multitudo singularis”, typical of the (...) hermit. The theme is unfolded in its pneumatological, Christological and ecclesiological aspects. A formal analysis seems to demonstrate that the theses presented by Peter Damian are mainly the result of the power of rhetoric, which he undoubtedly mastered. (shrink)

The spread of the reform found one of its protagonists in the hermit and Cardinal Bishop of Ostia, Peter Damian. An example worthy of case-study is the Gallic mission as apostolic legate in 1063. The most complete report of this journey was written by an anonymous disciple. This perspective allows to observe Damian’s communication strategies and the different methods used referring to the various interlocutors. The cause of the apostolic legation was the help request from Hugh, abbot (...) of Cluny, for the pressures suffered by the Bishop of Macon. The occasion was propitious from the point of view of the cardinal bishop to expand his network of personal and institutional relationships and to legitimize the papal supremacy. He proceeded to France, summoned a council at Chalon-sur-Saône and proved the justice of the contentions of Cluny. Despite the lack of historiographical success, this work remains an extremely useful source for studying a man who made his ars rethorica a powerful weapon in the service of the reform. (shrink)

The presence of quotations from the Laus heremiticae vitae contained in Peter Damian’s letter 28 in Paradiso XXI has led scholars to claim that Dante was familiar with the writings of the hermit and cardinal who lived in the 11th century. Instead, the author believes that Dante had only read the Laus heremiticae vitae, which circulated independently of the other works of Peter Damian, whose writings were otherwise unknown to Alighieri. This conclusion is reached on the (...) basis of the poor quality of the information Dante offers on Peter Damian’s biography, which derives from the traditions of Ravenna and not from Fonte Avellana, where he could have found the manuscripts of the hermit and cardinal’s works. (shrink)

Peter Damian’s epistle 28, usually called Dominus vobiscum, shows a complex theological discussion. In fact, the author intertwines different subjects: the reform of the Church, the exaltation of monasticism, and, in particular, the primacy of the eremitical life. However, what is central in Peter Damian’s discourse is the Eucharistic sacrament, which the author considers from the standpoint of a theological sensitivity centered on the liturgical dimension of the celebration and on its spiritual and religious value. This (...) contribution analyses Peter Damian’s treatment of the Eucharistic sacrament, placing it in the historical-theological and doctrinal context of the disputes on the sacrament that animated the Church since the mid-eleventh century. (shrink)

The short paper is a reply to a review of the author’s book HANDELN UND VERURSACHEN (Frankfurt am Main 2000). The reviewer, Peter Rohs, has focused upon the issues of causation, laws of nature and free will. Both Rohs and the author are libertarians, but they disagree on a number of metaphysical issues. The author maintains that causation is a relation between changes, i. e. time-consuming events, not between instantaneous states. Against Davidson’s “principle of the nomological character of causality”, (...) he holds that no exceptionless generalizations subsuming cause-effect pairs exist. He defends a singularist version of the counterfactual analysis of event causality instead. This analysis has application to both physical and mental events, so that no special kind of mental causation needs to be assumed. The paper is divided into five sections: (1) The skeptical view of laws of nature, (2) Causal relata, (3) Churchland’s law of action, (4) Counterfactual conditionals and knowledge of regularities, (5) Freedom and determinism. The debate is continued in a later issue of the same journal. (shrink)

Peter Graham has recently given a dilemma purportedly showing the compatibility of libertarianism about free will and the anti-skeptical epistemology of testimony. In the first part of this paper I criticize his dilemma: the first horn either involves a false premise or makes the dilemma invalid. The second horn relies without argument on an implausible assumption about testimonial knowledge, and even if granted, nothing on this horn shows libertarianism does not entail skepticism about testimonial justification. I then argue for (...) the incompatibility of (i) a view entailed by Open Theism, viz., that there are no true counterfactuals of freedom, (ii) a popular form of process reliabilism about justification and knowledge, and (iii) a weak anti-skepticism about testimonial justification and knowledge. I conclude that there is a costly tension between certain views about testimony and about free will. (shrink)

Composta attorno al 1065-1067, la lettera "Sull’onnipotenza divina" di Pier Damiani si apre con una questione posta da Desiderio, abate di Montecassino: «Sebbene Dio possa ogni cosa, non può restituire la verginità a colei che l’ha perduta. Egli ha certamente il potere di liberarla dalla pena, ma non può ridarle la corona della verginità che ha perduto». Il problema, che Pier Damiani riprendeva dalla lettera XXII di san Gerolamo, è solo in apparenza ozioso: il monaco ravennate ne fa un’autentica questione (...) filosofica, un “esperimento mentale” che solleva domande cruciali sulla natura del tempo e sul rapporto tra necessità e contingenza, leggi divine e princìpi logici, natura divina e natura umana. Il volume, a cura di Roberto Limonta, presenta la traduzione del De divina omnipotentia con note e testo latino a fronte. La prefazione di Mariateresa Fumagalli Beonio Brocchieri e il saggio introduttivo di Roberto Limonta ricostruiscono la lunga durata della questione posta da Pier Damiani, dai dibattiti teologici dei secoli medievali sino alle sue fortune nella filosofia, teologia e letteratura contemporanea. (shrink)

This paper examines "moderate modal skepticism", a form of skepticism about metaphysical modality defended by Peter van Inwagen in order to blunt the force of certain modal arguments in the philosophy of religion. Van Inwagen’s argument for moderate modal skepticism assumes Yablo's (1993) influential world-based epistemology of possibility. We raise two problems for this epistemology of possibility, which undermine van Inwagen's argument. We then consider how one might motivate moderate modal skepticism by relying on a different epistemology of possibility, (...) which does not face these problems: Williamson’s (2007: ch. 5) counterfactual-based epistemology. Two ways of motivating moderate modal skepticism within that framework are found unpromising. Nevertheless, we also find a way of vindicating an epistemological thesis that, while weaker than moderate modal skepticism, is strong enough to support the methodological moral van Inwagen wishes to draw. (shrink)

‘Universal benevolence’ may be defined as the goal of promoting the welfare of every individual, however remote, to the best of one’s ability. Currently, the commonest model of universal benevolence is that of ‘impartiality,’ the notion promoted by Peter Singer, Roderick Firth, and others, that every individual (including oneself) is of equal intrinsic worth. This paper contends that the impartialist model is seriously flawed. Specifically, it is demonstrated that impartialist accounts of benevolence (1) attempt to draw positive moral conclusions (...) from negative premises, (2) draw actual conclusions from merely counterfactual premises, (3) fail to live up to stated claims of naturalism, and (4) give no compelling account of moral motivation. By contrast, I propose an alternate model of universal benevolence, grounded in the Stoic, cosmopolitan theory of oikeiôsis, i.e. ‘appropriation.’ Such a model, in contradistinction to impartiality, would see benevolence as the positive identification between moral agent and moral patient, rather than a charitable sacrifice of oneself for a distinct but equal other. An ethics of oikeiôsis has the further benefit of avoiding each of the four abovementioned conceptual pitfalls common to impartialist theories. (shrink)

In this paper, I am going to explore an alternative explanation of causation in Graham Priest’s modal meinongianism. Priest proposes an understanding of causation, which is either too confusing, or against the metaphysical core of modal meinongianism. In his proposals, causation is discussed in the context of defining purely fictional and abstract objects, by using a counterfactual approach. In this case, causation is understood as an existence-entailing relation. I will argue that such an account of causation proves ineffective. Instead, I (...) will give another interpretation for causation, which is based on Peter Menzies and Huw Price’s version of agency theory of causation. The end result of my work will be the fact that causation as agency can, at best, be useful in understanding intentional acts, but not suitable for explaining what it means for a particular object to causally interact with us. (shrink)

Omissions are sometimes linked to responsibility. A harm can counterfactually depend on an omission to prevent it. If someone had the ability to prevent a harm but didn’t, this could suffice to ground their responsibility for the harm. Michael S. Moore’s claim is illustrated by the tragic case of Peter Parker, shortly after he became Spider-Man. Sick of being pushed around as a weakling kid, Peter became drunk on the power he acquired from the freak bite of a (...) radioactive spider. When a police officer called to Spider-Man to stop an escaping burglar, which he could have done easily, he failed to act. He was through taking orders. The omission was followed by a crime. That very same burglar later robbed Peter’s own house and when challenged he shot dead Peter’s Uncle Ben. Later, Spider-Man tracked down the killer and, when seeing his face close up, the possibility of prevention dawned on him. He could have stopped this crook and had he done so Uncle Ben would still be alive. Stan Lee’s tale of power finished with a Shakespearean twist. Young Peter realised the truth of the WGPCGR-thesis: With Great Power Comes Great Responsibility. We too will endorse the WGPCGR-thesis. There is a close connection between our notions of moral and legal responsibility and the powers we have as causal agents. This will be particularly important when it comes to the case of omissions: where we had the power to act but failed to do so. We hope to show the connections between the notions of power, cause, act, omission and responsibility but also some of the nuances. We will do so with particular reference to Moore’s account in Causation and Responsibility. (shrink)

Any satisfactory epistemology must account for the distinction between propositional and doxastic justification. Can infinitism account for it? Proposals to date have been unsatisfactory. This paper advances a new infinitist account of the distinction. The discussion proceeds as follows. Section 1 sets the stage. Section 2 presents Peter Klein's account. Section 3 raises a problem for Klein's account and suggests an improvement. Section 4 raises a further challenge. Sections 5 to 7 consider several unsuccessful attempts to meet the challenge. (...) Section 8 presents my new proposal, which can meet the challenge. Section 9 concludes the discussion. (shrink)

One of the most basic methods of philosophy is, and has always been, the consideration of counterfactual cases and imaginary scenarios. One purpose of doing so obviously is to test our theories against such counterfactual cases. Although this method is widespread, it is far from being commonly accepted. Especially during the last two decades it has been confronted with criticism ranging from complete dismissal to denying only its critical powers to a cautious defense of the use of thought experiments as (...) counterexamples. One of the strongest criticisms of the method of thought experimentation is "modal skepticism" as explicated and defended by Peter van Inwagen. Van Inwagen argues that the philosopher's notion of logical possibility is confused and that its epistemology is dubious. I argue that van Inwagen's skepticism is unwarranted. There is a sufficiently clear notion of logical possibility and a sufficiently straightforward way of getting to know what is logically possible. In the remainder of the paper I show how that connects with the methodology of thought experimentation in philosophy. (shrink)

1. Introduction: a look back at the reasons vs. causes debate. 2. The interventionist account of causation. 3. Four objections to interventionism. 4. The counterfactual analysis of event causation. 5. The role of free agency. 6. Causality in the human sciences. -- The reasons vs. causes debate reached its peak about 40 years ago. Hempel and Dray had debated the nature of historical explanation and the broader issue of whether explanations that cite an agent’s reasons are causal or not. Melden, (...) Peters, Winch, Kenny and Anscombe had contributed their anticausal conceptions. The neo-Wittgensteinians seemed to be winning the day when in 1963 Donald Davidson published his seminal paper “Actions, Reasons, and Causes”. Davidson’s paper devastated the Wittgensteinian camp. It contained, among other things, a powerful attack on the logical connection argument. Davidson argued that the existence of a logical or conceptual connection between descriptions can never eliminate a causal relation, which holds between events simpliciter, not between events under certain descriptions. Davidson maintained that in a way, reasons can be causes. When somebody acts for a certain reason, his intentional attitudes, or rather changes in his attitudes, cause his bodily movements. Davidson also argued that rationalization is a species of causal explanation. For the definition of action, he argued that intentional actions are bodily movements caused in the right way by beliefs and desires that rationalize them. Davidson’s paper paved the way for causal theories of action, which superseded neo-Wittgensteinian analyses in the following decades. The causal theory was rapidly adopted by Alvin Goldman, David Armstrong, Paul Churchland, Myles Brand and many others, entering the mainstream and dominating the philosophy of action to this very day. In 1971 Georg Henrik von Wright published his book "Explanation and Understanding". The second chapter did not deal with agency, but with causation. It developed a new account of causation, the interventionist or experimentalist account. Focusing on causation, von Wright remedied a major shortcoming of the reasons vs. causes debate. The concept of causality, and the nature of the causal relation, received little attention in this debate, a fact that holds true for both camps. Mostly it was simply taken for granted that, as Hempel had declared, “causal explanation is a special type of deductive-nomological explanation”. One camp then aligned intentional explanations with D-N explanations, while the other camp insisted on their disparity. So strictly speaking, the label “reasons/causes debate” was a misnomer. The controversy dealt primarily with the question as to whether intentional explanations can take the form of D-N explanations, while the notion of causation, and the metaphysics of the causal relation, were left obscured. With von Wright’s new approach, the situation changed. Von Wright was primarily concerned with causation, but his approach contained an implicit attack on the causal theory of action as well. His core idea was that the notion of causality is intimately linked with, or even derived from, the notion of intentionally making something happen. Other philosophers, even Hume, had considered such a connection before, but often just to reject this view, regarding it as a kind of myth belonging to the infancy of the human mind. Von Wright took the idea seriously. He submitted the analysis that p is the cause of q if and only if by doing p we could bring about q. The causal theory of action was also concerned with the relation between causation and agency, to which its name bears witness. The causal theory of action holds that actions are bodily movements with a certain causal history. This is why von Wright’s account constituted a momentous challenge to the causal theory: it reversed the direction of conceptual dependency between both notions. Davidson and his followers tried to define what an intentional action is by using the notion of causation. The causal condition which the causal theory sets is part of the definition of “doing something intentionally”. Von Wright claimed that the conceptual dependency is the other way round. He used the notions of doing, and bringing about, to explain what causal relations are. So, instead of a causal theory of action, he advocated an agency theory of causation, as it may be dubbed. It is remarkable how seldom this clash of opinions about conceptual primacy is reflected in the literature. There are few exceptions: Fred Stoutland noticed the conflict, and he published a number of papers in which he compared Davidson’s and von Wright’s views. Von Wright’s book "Explanation and Understanding" was widely read and discussed in the seventies, especially in Europe. But it strikes me that especially in North America, where the causal theory of action became the orthodoxy of the day, von Wright’s challenge went largely unnoticed. Even Davidson did not seem to take it seriously. He nowhere takes notice of the interventionist theory of causation, while he does discuss von Wright’s earlier book "Norm and Action". As is well-known, Davidson favoured an alternative account of causation, based on “the principle of the nomological character of causality”, as he somewhat clumsily called it, or, later and less clumsily, “the cause-law thesis”. Davidson’s firm adherence to a nomological theory of causality may explain why he did not take much interest in alternative accounts. [...] -/- . 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A major criticism of David Lewis’ counterfactual theory of causation is that it allows too many things to count as causes, especially since Lewis allows, in addition to events, absences to be causes as well. Peter Menzies has advanced this concern under the title “the problem of profligate causation.” In this paper, I argue that the problem of profligate causation provides resources for exposing a tension between Lewis’ acceptance of absence causation and his modal realism. The result is a (...) different problem of profligate causation—one that attacks the internal consistency of Lewisian metaphysics rather than employing common sense judgments or intuitions that conflict with Lewis’ extensive list of causes. (shrink)

This essay outlines a hierarchical framework of Reality that allows for degrees of Reality. I use Reality (with a capital “R”) to designate reality in a primitive, metaphysical sense. Reality, grounding, and essence are the key elements of the framework presented here. I assume that Reality must have a fundamental level and all fundamental phenomena must be Real. Moreover, I postulate that everything non-fundamental is ultimately grounded in the fundamental Real. But what about the Reality of the non-fundamental? I argue (...) that it is possible for non-fundamental phenomena to be Real, Unreal, or Semi-Real. The framework developed here accommodates these possibilities and illuminates them using the notion of essence. I argue that the essential nature of a phenomenon determines its degree of Reality. The framework does not assume that Reality must have degrees but only that it may have degrees. Its theoretical attractiveness consists in its ability to accommodate many diverse intuitions about grounding, help us better understand and classify theories about grounding, and illuminate Reality and its possible degrees. (shrink)

Infectious logics are systems that have a truth-value that is assigned to a compound formula whenever it is assigned to one of its components. This paper studies four-valued infectious logics as the basis of transparent theories of truth. This take is motivated as a way to treat different pathological sentences differently, namely, by allowing some of them to be truth-value gluts and some others to be truth-value gaps and as a way to treat the semantic pathology suffered by at least (...) some of these sentences as infectious. This leads us to consider four distinct four-valued logics: one where truth-value gaps are infectious, but gluts are not; one where truth-value gluts are infectious, but gaps are not; and two logics where both gluts and gaps are infectious, in some sense. Additionally, we focus on the proof theory of these systems, by offering a discussion of two related topics. On the one hand, we prove some limitations regarding the possibility of providing standard Gentzen sequent calculi for these systems, by dualizing and extending some recent results for infectious logics. On the other hand, we provide sound and complete four-sided sequent calculi, arguing that the most important technical and philosophical features taken into account to usually prefer standard calculi are, indeed, enjoyed by the four-sided systems. (shrink)

Where does the impetus towards ethical theory come from? What drives humans to make values explicit, consistent, and discursively justifiable? This paper situates the demand for ethical theory in human life by identifying the practical needs that give rise to it. Such a practical derivation puts the demand in its place: while finding a home for it in the public decision-making of modern societies, it also imposes limitations on the demand by presenting it as scalable and context-sensitive. This differentiates strong (...) forms of the demand calling for theory from weaker forms calling for less, and contexts where it has a place from contexts where it is out of place. In light of this, subjecting personal deliberation to the demand turns out to involve a trade-off. (shrink)

This paper extends Fitting's epistemic interpretation of some Kleene logics, to also account for Paraconsistent Weak Kleene logic. To achieve this goal, a dualization of Fitting's "cut-down" operator is discussed, rendering a "track-down" operator later used to represent the idea that no consistent opinion can arise from a set including an inconsistent opinion. It is shown that, if some reasonable assumptions are made, the truth-functions of Paraconsistent Weak Kleene coincide with certain operations defined in this track-down fashion. Finally, further reflections (...) on conjunction and disjunction in the weak Kleene logics accompany this paper, particularly concerning their relation with containment logics. These considerations motivate a special approach to defining sound and complete Gentzen-style sequent calculi for some of their four-valued generalizations. (shrink)

Paraconsistent logics are logical systems that reject the classical principle, usually dubbed Explosion, that a contradiction implies everything. However, the received view about paraconsistency focuses only the inferential version of Explosion, which is concerned with formulae, thereby overlooking other possible accounts. In this paper, we propose to focus, additionally, on a meta-inferential version of Explosion, i.e. which is concerned with inferences or sequents. In doing so, we will offer a new characterization of paraconsistency by means of which a logic is (...) paraconsistent if it invalidates either the inferential or the meta-inferential notion of Explosion. We show the non-triviality of this criterion by discussing a number of logics. On the one hand, logics which validate and invalidate both versions of Explosion, such as classical logic and Asenjo–Priest’s 3-valued logic LP. On the other hand, logics which validate one version of Explosion but not the other, such as the substructural logics TS and ST, introduced by Malinowski and Cobreros, Egré, Ripley and van Rooij, which are obtained via Malinowski’s and Frankowski’s q- and p-matrices, respectively. (shrink)

This paper discusses a dualization of Fitting's notion of a "cut-down" operation on a bilattice, rendering a "track-down" operation, later used to represent the idea that a consistent opinion cannot arise from a set including an inconsistent opinion. The logic of track-down operations on bilattices is proved equivalent to the logic d_Sfde, dual to Deutsch's system S_fde. Furthermore, track-down operations are employed to provide an epistemic interpretation for paraconsistent weak Kleene logic. Finally, two logics of sequential combinations of cut-and track-down (...) operations allow settling positively the question of whether bilattice-based semantics are available for subsystems of S_fde. (shrink)

I define two metaphysical positions that anti-physicalists can take in response to Jonathan Schaffer’s ground functionalism. Ground functionalism is a version of physicalism where explanatory gaps are everywhere. If ground functionalism is true, arguments against physicalism based on the explanatory gap between the physical and experiential facts fail. In response, first, I argue that some anti-physicalists are already safe from Schaffer’s challenge. These anti-physicalists reject an underlying assumption of ground functionalism: the assumption that macrophysical entities are something over and above (...) the fundamental entities. I call their position “lightweight anti-physicalism.” Second, I go on to argue that even if anti-physicalists accept Schaffer’s underlying assumption, they can still argue that the consciousness explanatory gap is especially mysterious and thus requires a special explanation. I call the resulting position “heavyweight anti-physicalism.” In both cases, the consciousness explanatory gap is a good way to argue against physicalism. (shrink)

In this article we revisit a number of disputes regarding significance logics---i.e., inferential frameworks capable of handling meaningless, although grammatical, sentences---that took place in a series of articles most of which appeared in the Australasian Journal of Philosophy between 1966 and 1978. These debates concern (i) the way in which logical consequence ought to be approached in the context of a significance logic, and (ii) the way in which the logical vocabulary has to be modified (either by restricting some notions, (...) or by adding some vocabulary) to keep as much of Classical Logic as possible. Our aim is to show that the divisions arising from these disputes can be dissolved in the context of a novel and intuitive proposal that we put forward. (shrink)

Some recent researches in experimental philosophy have posed a problem for philosophers’ appeal to intuition (hereinafter referred to as PAI); the aim of this paper is to offer an answer to this challenge. The thesis against PAI implies that, given some experimental results, intuition does not seem to be a reliable epistemic source, and —more importantly— given the actual state of knowledge about its operation, we do not have sufficient resources to mitigate its errors and thus establish its reliability. That (...) is why PAI is hopeless. Throughout this paper I will defend my own conception of PAI, which I have called the Deliberative Conception, and consequently, I will defend intersubjective agreement as a means to mitigate PAI errors, offering empirical evidence from recent studies on the Argumentative Theory of Reason that favor the conception I defend here. Finally, I will reply to some objections that might arise against the Deliberative Conception, which will lead me to discuss some metaphilosophical issues that are significantly relevant for the future of the dispute about the appeal to intuition. (shrink)

Though recent years have seen a proliferation of critical histories of international law, their normative significance remains under-theorized, especially from the perspective of general readers rather than writers of such histories. How do critical histories of international law acquire their normative significance? And how should one react to them? We distinguish three ways in which critical histories can be normatively significant: (i) by undermining the overt or covert conceptions of history embedded within present practices in support of their authority; (ii) (...) by disappointing the normative expectations that regulate people’s reactions to critical histories; and (iii) by revealing continuities and discontinuities in the functions that our practices serve. By giving us a theoretical grip on the different ways in which history can be normatively significant and call for different reactions, this account helps us think about the overall normative significance of critical histories and how one and the same critical history can pull us in different directions. (shrink)

In Kripke’s classic paper on truth it is argued that by adding a new semantic category different from truth and falsity it is possible to have a language with its own truth predicate. A substantial problem with this approach is that it lacks the expressive resources to characterize those sentences which fall under the new category. The main goal of this paper is to offer a refinement of Kripke’s approach in which this difficulty does not arise. We tackle this characterization (...) problem by letting certain sentences belong to more than one semantic category. We also consider the prospect of generalizing this framework to deal with languages containing vague predicates. (shrink)

Panpsychists aspire to explain human consciousness, but can they also account for the physical world? In this paper, I argue that proponents of a popular form of panpsychism cannot. I pose a new challenge against this form of panpsychism: it faces an explanatory gap between the fundamental experiences it posits and some physical entities. I call the problem of explaining the existence of these physical entities within the panpsychist framework “the missing entities problem.” Spacetime, the quantum state, and quantum gravitational (...) entities constitute three explanatory gaps as instances of the missing entities problem. Panpsychists are obliged to solve all instances of the missing entities problem; otherwise, panpsychism cannot be considered a viable theory of consciousness. (shrink)

While we typically think of culture as defined by geography or ethnicity (e.g., American culture, Mayan culture), the term also applies to the practices and expectations of smaller groups of people. Though embedded in the larger culture surrounding them, such subcultures have their own sets of rules like those that scientists do. Philosophy of science has as its main object of studio the scientific activity. A way in which we have tried to explain these scientific practices is from the actual (...) ontological commitments that scientists do through their scientific theories. Certainly, we know scientific theories through some specific scientific language, which is, in its turn, a subset of the natural language developed by a particular culture. This study is conducted to explore and evaluate some of the most important epistemological consequences of these ontological commitments, specially the so-called ‘truth-commitment’ and its relation with a linguistic-cultural framework. There is an interesting debate between advocates and opponents of scientific realistic view of the natural world. Some lines of scientific realism argumentation assure that: (i) Mature scientific theories are approximately true. (ii) There are entities and organisms in the world that correspond with the ontology presupposed by the best scientific theories within a specific domain of scientific research and (iii) The new acceptable scientific theories should explain why past theories were successful predecessors (Colyvan 2008, Cocchiarella 2007 & Laudan 1981). Contrary, anti- realist positions ensure against the realist’s true - claim that is a semantic commitment - that the purpose of scientific theories to found the truth it is simple an unattainable goal, especially if the kind of truth they are looking for is a corresponding relation between scientific theories and the ontology of the world. Anti-realist positions held that this relation could be circular and unknowable. I do believe that there is a deep confusion between the way in which we accede to the knowledge of the constitutive structures, entities and organisms of the world (which is an epistemological matter) and the way these structures, entities and organisms are (which is an ontological matter). It seems that there is a bridge between the epistemological and ontological aspect in need for conceptual clarification. I do propose that the type of link between the two extremes have to be linguistic in nature. (shrink)

We provide a logical matrix semantics and a Gentzen-style sequent calculus for the first-degree entailments valid in W. T. Parry’s logic of Analytic Implication. We achieve the former by introducing a logical matrix closely related to that inducing paracomplete weak Kleene logic, and the latter by presenting a calculus where the initial sequents and the left and right rules for negation are subject to linguistic constraints.

Analizo los principales argumentos en torno a la dependencia teórica de los enunciados y conceptos observacionales tomando como eje de discusión la postura de Gerhard Schurz. Después discuto los principales argumentos sobre la dependencia teórica de la percepción. Finalmente analizo la dependencia teórica de la experimentación científica teniendo como eje de discusión la postura de Allan Franklin. Muestro que un rasgo positivo de la dependencia teórica de la observación y la experimentación es que una teoría científica puede establecer los mecanismos (...) para evaluar la importancia de los fenómenos observados inesperados. Estos mecanismos sin duda constituyen un instrumento esencial para el progreso científico. (shrink)

We examine the set of formula-to-formula valid inferences of Classical Logic, where the premise and the conclusion share at least a propositional variable in common. We review the fact, already proved in the literature, that such a system is identical to the first-degree entailment fragment of R. Epstein's Relatedness Logic, and that it is a non-transitive logic of the sort investigated by S. Frankowski and others. Furthermore, we provide a semantics and a calculus for this logic. The semantics is defined (...) in terms of a \-matrix built on top of a 5-valued extension of the 3-element weak Kleene algebra, whereas the calculus is defined in terms of a Gentzen-style sequent system where the left and right negation rules are subject to linguistic constraints. (shrink)

Se explora la naturaleza de los problemas lacunae a partir del análisis de los conceptos elaborados, respectivamente, por Larry Laudan, Theo Kuipers y Atocha Aliseda. Sugeriré que los problemas lacunae pueden surgir del debilitamiento de la noción de ‘falsación empírica’ y repercutir en la noción de ‘implicación lógica’.

Analizo los alcances y los límites de las teorías sobre el progreso científico elaboradas por Larry Laudan y Philip Kitcher, respectivamente. Comienzo por caracterizar sus teorías, después hago una comparación entre éstas y finalmente reviso cuáles son sus principales problemas. Al final muestro algunas razones por las cuales sus criterios propuestos para evaluar el progreso cognitivo de la ciencia no son exitosos. Termino sugiriendo una manera de evaluar el progreso cognitivo de la ciencia.

We argue that philosophers are competent to facilitate public discussion concerning restrictions on human migration across political borders. We also argue that presenting public audiences with a prima facie case for open borders offers a unique opportunity to elucidate important aspects of philosophical reasoning. Finally, we share resources and a lesson plan for those keen to examine the case for open borders with students, or to facilitate public discussion on these issues.

Albert and Cederman couch the neorealist perspective in terms of ‘systems’ theorizing, Ferguson and Mansbach rhetorically discuss issues and non-issues which are readily addressed within the neoliberal perspective, and of course, Onuf is unabashedly a constructivist. Below, I discuss each theoretical perspective relative to the articles assigned, and, thereafter conclude with some observations on the three articles and theoretical frameworks.

Kant's formulae ought to effectively produce the same result when applied to the moral validity of any particular maxim; further, no valid maxim produces contradictory results when applied against Kant's Universal Law and Humanity formulae. Where one uses all formulae in the assessment of a maxim, one gains a more complete understanding of the moral law, thereby bridging principles of reason with intuition within the agent who has undertaken to evaluate the morality of a particular action. These formulae command without (...) regard to any particular interests, but are instead unconditional; further, these formulae effectively limit choice of action and therefore give rise to duty. Kant implies that the structure of all maxims requires different formulae of the same moral law, i.e., all maxims have a ‘form’ and a ‘matter’, which prompt reconfiguring of the categorical imperative into different formulae in order to test the morality of a maxim. (shrink)

Justiciability sets the boundaries of judicial review and the rule of law. A justiciable issue is that which is appropriate within a judicial forum. That is, where an "independent and impartial body" can remedy rights violations of identifiable claimants, the issue before it is justiciable. If it falls beyond what is judicially determinable, it is 'non-justiciable'. The principle is not fixed, as it does not permanently set the boundaries of that which is appropriate for judicial determination. Rather, it evolves "from (...) context to context," and expands and narrows along what falls within judicial competencies at a particular time. On an elementary level, it is distinct from jurisdiction, as it establishes boundaries of subject matter on policy or constitutional grounds, whereas jurisdiction is grounded in established legal rules. However, questions of jurisdiction can be subsumed under broader questions of justiciability. (shrink)