What is common knowledge? According to the dominant iterative model, a group of people commonly knows that p if and only if they each individually know that p, and they furthermore each know that they each know that p, and so on to infinity. According to the integrative model proposed in this paper, a group commonly knows that p when its members are united in a state of mind of the type whose contents must be true. Epistemic integration within a (...) group is enabled by symmetrical signalling processes such as eye contact. In conversational dyads, symmetrical processing operates on pairs of signals produced by the two sides in a familiar format: speakers generate content for joint attention in main channel communication, and addressees evaluate that content in backchannel communication. Processes of reinforcement learning shape our pairwise signalling, driving the accumulation of common knowledge, both in response to extrinsic reward for coordinated action, and in response to the intrinsic reward of curiosity. Where the iterative model caps the epistemic performance of the group at the level of its weakest member, the integrative model of common knowledge shows how groups working together can outperform their strongest member working alone. (shrink)

Temporal ontology is the philosophical debate on the existence of the past and the future. It features a three-way confrontation between supporters of presentism (the present exists, the past and the future do not), pastism (the past and the present exist, the future does not), and eternalism (the past, the present, and the future all exist). Most philosophers engaged in this debate believe that presentism is much more in agreement with common sense than the rival views; moreover, most of them (...) believe that being in agreement with common sense is epistemically valuable for a philosophical view. We studied experimentally non-experts’ ideas pertaining to the domain of temporal ontology, i.e., as we called it, common-sense temporal ontology, focusing on the Italian population. We found that a non-overwhelming majority of participants (~64%) favoured presentism, while two significant minorities favoured pastism (~19%) and eternalism (~17%). We think that our findings provide some support, albeit weaker than expected, for the view that presentism is more in agreement with common sense than the rival positions. (shrink)

In this article I focus on some unduly neglected common-sense considerations supporting the view that one's evidence is the propositions that one knows. I reply to two recent objections to these considerations.

I argue that the appropriateness of an assertion is sensitive to context—or, really, the “common ground”—in a way that hasn’t previously been emphasized by philosophers. This kind of context-sensitivity explains why some scientific conclusions seem to be appropriately asserted even though they are not known, believed, or justified on the available evidence. I then consider other recent attempts to account for this phenomenon and argue that if they are to be successful, they need to recognize the kind of context-sensitivity that (...) I argue for. (shrink)

Can there be a theory-free experience? And what would be the object of such an experience. Drawing on ideas set out by Husserl in the “Crisis” and in the second book of his “Ideas”, the paper presents answers to these questions in such a way as to provide a systematic survey of the content and ontology of common sense. In the second part of the paper Husserl’s ideas on the relationship between the common-sense world (what he called the ‘life-world’) and (...) the world of physical theory are subjected to a critical evaluation. The relation of Husserl’s ideas to current work in folk psychology and naive physics and to the direct realism of J. J. Gibson are also treated. (shrink)

The Common Core Ontologies(CCO) are designed as a mid-level ontology suite that extends the Basic Formal Ontology. In 2017,CUBRC, Inc. made CCO openly available. CCO has since been increasingly adopted by a broad group of users and applications and is proposed as the first standard mid-level ontology. Despite these successes, documentation of the contents and design patterns of the CCO has been comparatively minimal. This paper is a step toward providing enhanced documentation for the mid-level ontology suite through a discussion (...) of the contents of the eleven ontologies that collectively comprise the Common Core Ontology suite. (shrink)

This paper advocates a realist position with respect to science and common sense. It considers the question of whether science provides knowledge of reality. It presents a positive response to that question. It rejects the anti-realist claim that we are unable to acquire knowledge of reality in favour of the realist view that science yields knowledge of the external world. But it remains to be specified just what world that is. Some argue that science leads to the rejection of our (...) commonsense view of the world. If so, the world about which science informs us is not the world of common sense. Common sense is “stone-age metaphysics”. It is false theory inherited from our primitive ancestors that is to be eliminated in favour of science. Against such an elimination of common sense, it is argued that science both preserves and explains our commonsense experience of the world. Science may well lead to the overthrow of some of our most deeply held beliefs. But common sense reflects a more basic and durable level of experience. Commonsense beliefs are well-confirmed beliefs that are vindicated by their role in successful practical action each and every day. Common sense provides a firm basis on which to base a realist philosophy of science. (shrink)

I discuss the role of translatability in philosophical justification. I begin by discussing and defending Thomas Reid’s account of the role that facts about comparative linguistics can play in philosophical justification. Reid believes that common sense offers a reliable but defeasible form of justification. We cannot know by introspection, however, which of our judgments belong to common sense. Judgments of common sense are universal, and so he argues that the strongest evidence that a judgment is a part of common sense (...) is that it is to be found in all languages. For Reid, then, evidence that a certain distinction is to be found in all languages is evidence that the distinction is part of common sense rather than being a common local prejudice. From such a perspective, empirical work in comparative linguistics can play a defeasible justificatory role in philosophical arguments. I contrast Reid’s position with the more radical position of defenders of the Natural Semantic Metalanguage approach, such as Anna Wierzbicka, who argues that only judgments that are translatable into all natural languages are justifiable. I show how such a position is rooted in an implausible view, although one common among cognitive scientists and linguistics, about the nature of concepts, which does not allow for novel concepts. (shrink)

A popular introduction to common consent arguments for belief in God.

It is widely accepted that it counts for a metaphysical theory when the theory is in accord with common sense and against a metaphysical theory when the theory clashes with common sense. It is unclear, however, why this should be the case. When engaging in metaphysics, why should we give common sense any weight? This chapter maintains that it is only against the backdrop of a particular metametaphysical stance that questions about metaphysical best practices become tractable. From the perspective of (...) a metaphysics-as-modelling approach, common sense ought to play a significant, though defeasible, role in metaphysical theorizing. According with common sense is one of a number of theoretical virtues that metaphysicians should strive for. Nevertheless, it is important for the metaphysician to be cautious when appealing to common sense. She should distinguish what actually falls within the bounds of common sense as such from what a particular researcher happens to find intuitive. Furthermore, our best scientific theories may undercut the evidence provided by common sense. Finally, the metaphysician should attend to the context in which she invokes common sense. For some topics of inquiry, common sense ought to play a more expansive role in our metaphysical theorizing than for others. (shrink)

Is the common cause principle merely one of a set of useful heuristics for discovering causal relations, or is it rather a piece of heavy duty metaphysics, capable of grounding the direction of causation itself? Since the principle was introduced in Reichenbach’s groundbreaking work The Direction of Time (1956), there have been a series of attempts to pursue the latter program—to take the probabilistic relationships constitutive of the principle of the common cause and use them to ground the direction of (...) causation. These attempts have not all explicitly appealed to the principle as originally formulated; it has also appeared in the guise of independence conditions, counterfactual overdetermination, and, in the causal modelling literature, as the causal markov condition. In this paper, I identify a set of difficulties for grounding the asymmetry of causation on the principle and its descendents. The first difficulty, concerning what I call the vertical placement of causation, consists of a tension between considerations that drive towards the macroscopic scale, and considerations that drive towards the microscopic scale—the worry is that these considerations cannot both be comfortably accommodated. The second difficulty consists of a novel potential counterexample to the principle based on the familiar Einstein Podolsky Rosen (EPR) correlations in quantum mechanics. (shrink)

Alexander Campbell once declared “a solemn league and covenant” between philosophy and common sense. Campbell’s pronouncement is representative of a broader trend in the Restorationist movement to look favorably on the common sense response to skepticism—a response originating in the work of Scottish philosopher and former minister Thomas Reid. I recount the tumultuous history between philosophy and common sense followed by the efforts of Campbell and Reid to reunite them. Turning to the present, I argue that an epistemic principle known (...) as phenomenal conservatism best embodies the core insights contained within Reid and Campbell's common sense response to skepticism. I finish by arguing for phenomenal conservatism. (shrink)

The legalization of physician-assisted suicide (PAS) in several states in the U.S. and the growing social approval of euthanasia have created confusion, pastoral challenges, and conflicts between Catholic and non-Catholic healthcare institutions. For many of its supporters, the legal and moral legitimacy of PAS is grounded on the right to autonomy. I concur with Callahan that the right to autonomy, while may be pertinent when it comes to moral debate on suicide, does not justify PAS. Unlike suicide, PAS is not (...) a private matter. It involves the medical institution represented by the physician who is given authority to legitimize the termination of human life, and the society that will give it an imprimatur. If autonomy per se is the basis of this so-called dignity of PAS from the viewpoint of its proponents, they will not hesitate to declare suicide as more dignified than any other way of dying. But current laws in the U.S. on PAS are silent with regard to legal rights to suicide or assisted suicide in general. According to the U.S. Supreme Court, the legislature is the venue for the legalization of PAS, not the court, for PAS is about social approval of assisted suicide. Therefore, the debate concerning the legalization of PAS should shift from individual rights to common good, from autonomy to collective harms and benefits, and from justifying individual cases of PAS to legitimizing it as a social policy. (shrink)

People partaking in a conversation can add to the common ground of said conversation by performing different speech acts. That is, they can influence which propositions are presumed to be shared among them. In this paper, I am going to apply the common ground framework to the phenomenon of epistemic injustice. In doing so, I am going to focus on two kindsof speech acts: making assertions and asking certain kinds of questions. And I am going to look at three varieties (...) of epistemic injustice: testimonial injustice, inquiring injus-tice and interpretative injustice.I am going to argue that what all these varieties of epistemic injustice have in common is that they unfairly inhibit the speaker’s ability to add to the common ground in the way intended by her. This in turn negatively affects which con-versational roles a speaker can play in a given conversation. Based on these results, I am going to end by looking at some of the harms that epistemic injustice inflicts upon its victims. (shrink)

In a recent book (_Lying and insincerity_, Oxford University Press, 2018), Andreas Stokke argues that one lies iff one says something one believes to be false, thereby proposing that it becomes common ground. This paper shows that Stokke’s proposal is unable to draw the right distinctions about insincere performative utterances. The objection also has repercussions on theories of assertion, because it poses a novel challenge to any attempt to define assertion as a proposal to update the common ground.

What role does ‘ordinary language philosophy’ play in the defense of common sense beliefs? J.L. Austin and Ludwig Wittgenstein each give central place to ordinary language in their responses to skeptical challenges to common sense beliefs. But Austin and Wittgenstein do not always respond to such challenges in the same way, and their working methods are different. In this paper, I compare Austin’s and Wittgenstein’s metaphilosophical positions, and show that they share many metaphilosophical commitments. I then examine Austin and Wittgenstein’s (...) respective takes on the problem of other minds and the problem of our knowledge of the external world. Interestingly, we find Wittgenstein employing methods more frequently associated Austin and vice versa. Moreover, we find that a variety of defenses of common sense beliefs are compatible with ‘ordinary language philosophy.’. (shrink)

This paper defends Common Sense Realism against contemporary epistemological skepticism about reality and truth. We argue that reality exists independently of perception and that human cognition provides genuine access to this reality despite inherent limitations. Our defense proceeds through two primary arguments: the Action Argument demonstrating the logical necessity of reality for intentional choice, and the Imagination Argument revealing consciousness's dependence on prior reality. We develop an information theory grounded in objective patterns and introduce the Fragment Theory of Knowledge to (...) explain how partial, perspective-bound experiences access fragments of unified reality. We address challenges from quantum mechanics and evolutionary theory, providing a unified response that integrates scientific understanding with realist commitments, ultimately demonstrating the practical significance of realism across multiple domains of human experience and inquiry. Keywords: Common Sense Realism, epistemology, ontology, Action Argument, Fragment Theory of Knowledge, quantum mechanics, evolutionary theory. (shrink)

To address some questions in global biomedical ethics, three problems about cultural moral differences and alleged differences in Eastern and Western cultures are addressed: The first is whether the East has fundamentally different moral traditions from those in the West. Concentrating on Japan and the United States, it is argued that theses of profound and fundamental East-West differences are dubious because of many forms of shared morality. The second is whether human rights theory is a Western invention with no firm (...) traditions in Eastern moral traditions. It is argued that this thesis is unsupported both historically and in contemporary bioethics. The third problem is whether multiculturalist theory casts doubt on claims of universal principles and rights. It is argued that the reverse is true: multiculturalism is a universalistic theory. The argument throughout supports common morality theory. (shrink)

Philosophy of religion, approached from a comparative perspective, can be a valuable tool for advancing inter-religious dialogue. Unfortunately, “comparative religion” today is usually characterised by two extreme positions: 1) Comparing religions in order to come to the conclusion that one's own religion is superior 2) Arguing for a type of “religious pluralism” that relativises all religious truth claims. -/- The former approach reduces religion to a confrontational form of apologetics, theatrical “debates” and polemics, while the latter reduces religion to a (...) mere acceptance of pragmatically useful perspectivist narratives devoid of absolute reality or truth. -/- Inter-religious dialogue should follow a middle path between these two extremes by engaging with underlying philosophical themes that are common to all religious traditions instead of emphasising the comparison of theological and soteriological arguments that may depend on justifications that are exclusive to a particular religious practice. The philosophical theme explored here is that of dissatisfaction and existential suffering in an imperfect world, a theme found in all “world religions”. Indeed, the diagnosis of this existential predicament and the hope that religious practice may allow one to overcome it appears to be universal, while its causes and the prescribed remedies differ considerably among religious traditions. Nevertheless, inter-religious dialogue beginning from a conviction that all religious practitioners strive for truth and salvation in response to a common existential experience may lead to a more compassionate and productive dialogue between religious communities. This type of inter-religious dialogue avoids accusations of falling into religious syncretism or relativism while encouraging diverse religious communities to address contemporary issues from areas of philosophical common ground. This allows for a more fruitful type of inter-religious dialogue and comparative study of religion that can be pursued while maintaining one's own distinct religious identities and particular religious truths. (shrink)

The coordinated attack scenario and the electronic mail game are two paradoxes of common knowledge. In simple mathematical models of these scenarios, the agents represented by the models can coordinate only if they have common knowledge that they will. As a result, the models predict that the agents will not coordinate in situations where it would be rational to coordinate. I argue that we should resolve this conflict between the models and facts about what it would be rational to do (...) by rejecting common knowledge assumptions implicit in the models. I focus on the assumption that the agents have common knowledge that they are rational, and provide models to show that denying this assumption suffices for a resolution of the paradoxes. I describe how my resolution of the paradoxes fits into a general story about the relationship between rationality in situations involving a single agent and rationality in situations involving many agents. (shrink)

Kant’s _Prolegomena_ is a piece of philosophical advertising: it exists to convince the open-minded “future teacher” of metaphysics that the true critical philosophy — i.e., the first _Critique_ — provides the only viable solution to the problem of metaphysics (i.e. its failure to make any genuine progress). To be effective, a piece of advertising needs to know its audience. This chapter argues that Kant takes his reader to have some default sympathies for the common-sense challenge to metaphysics originating from Thomas (...) Reid and his followers; this fact in turn explains his rhetorical strategies in the _Prolegomena_, particularly regarding the presentation of the problem of metaphysics. The chapter draws attention to the importance of Shaftesbury, who, with a nod to Horace, had argued for the deployment of humour to disarm fraudulent claims to epistemic and moral authority. Kant looks to Horace himself to poke fun at the common-sense challenge to metaphysics, and from there to indicate the general shape of the particular argumentative strategies of the _Critique_ — that project that alone, in his view, can promise some kind of future for metaphysics. (shrink)

ABSTRACTThe question of how common usage could be constitutive for the meaning of linguistic expressions has been discussed by Renaissance philosophers such as Lorenzo Valla, and it also played an important role in Renaissance theories of juridical interpretation. An aspect of the analysis of common usage in Renaissance theories of juridical interpretation that concerns the role of presumption has not yet found much attention. Renaissance jurists such as Simone de Praetis, Nicolaus Everardus, and Aimone de Cravetta saw that both the (...) usage of Latin by practitioners of law and the vernacular common usage of ordinary people often differed from the technical definition of legal concepts as laid down by ancient jurists or modern legislators. In some cases, they ascribed both to Latin and to vernacular common usage the power of changing the meaning of juridical terms. Still, they were aware of the fact that matters of common usage involve always a degree of uncertainty. The methodological notion of presumption is one of the concepts that figured most prominently in Renaissance approaches to the problem of uncertainty, and, in particular, it was applied in the analysis of meaning-change of legal concepts through common usage. (shrink)

The purpose of this paper is to conceptualize and explore what I shall call the Common Subject Problem for ethics. The problem is that there seems to be no good answer to what property everyone who makes moral claims could be talking and thinking about. The Common Subject Problem is not a new problem; on the contrary, I will argue that it is one of the central animating concerns in the history of both metaethics and normative theory. But despite its (...) importance, the Common Subject Problem is essentially invisible on many contemporary ways of carving up the problems of metaethics and normative ethical theory. My aim, therefore, is to make progress – in part by naming the problem, but also by beginning to sketch out the contours of what gives the problem its force, by distinguishing between different paths of response to the problem and assessing some of their chief merits, and finally, by distinguishing the Common Subject Problem from another problem with which it has come to be conflated. This nearby problem is the Moral Twin Earth Problem. Whereas the Common Subject Problem is a problem about what property ‘wrong’ could refer to, the Moral Twin Earth Problem is a problem about how ‘wrong’ could refer to it. The upshot of the paper, therefore, is to rescue one of the historically significant problems in normative ethics and metaethics – a problem that is essentially about normative semantics – from the illusion that has persisted over the last twenty years that it is really, somehow, a problem about metasemantics. Once we have reclaimed this problem, we can see that it could still be a problem even if there are no distinctively metasemantic problems in metaethics at all, that it is a problem faced by a wider variety of views, and that the space of possible solutions is much wider and more interesting for normative theory, moral psychology, and moral epistemology. (shrink)

Kant’s Prolegomena is a piece of philosophical advertising: it exists to convince the open-minded “future teacher” of metaphysics that the true critical philosophy — i.e., the Critique — provides the only viable solution to the problem of metaphysics (i.e. its failure to make any genuine progress). To be effective, a piece of advertising needs to know its audience. This chapter argues that Kant takes his reader to have some default sympathies for the common-sense challenge to metaphysics originating from Thomas Reid (...) and his followers; this fact in turn explains his rhetorical strategies in the Prolegomena, particularly regarding the presentation of the problem of metaphysics. The chapter draws attention to the importance of Shaftesbury, who, with a nod to Horace, had argued for the deployment of humour to disarm fraudulent claims to epistemic and moral authority. Kant looks to Horace himself to poke fun at the common-sense challenge to metaphysics, and from there to indicate the general shape of the particular argumentative strategies of the Critique — that project that alone, in his view, can promise some kind of future for metaphysics. (shrink)

Robert Aumann presents his Agreement Theorem as the key conditional: “if two people have the same priors and their posteriors for an event A are common knowledge, then these posteriors are equal” (Aumann, 1976, p. 1236). This paper focuses on four assumptions which are used in Aumann’s proof but are not explicit in the key conditional: (1) that agents commonly know, of some prior μ, that it is the common prior; (2) that agents commonly know that each of them updates (...) on the prior by conditionalization; (3) that agents commonly know that if an agent knows a proposition, she knows that she knows that proposition (the “K K” principle); (4) that agents commonly know that they each update only on true propositions. It is shown that natural weakenings of any one of these strong assumptions can lead to countermodels to Aumann’s key conditional. Examples are given in which agents who have a common prior and commonly know what probability they each assign to a proposition nevertheless assign that proposition unequal probabilities. To alter Aumann’s famous slogan: people can “agree to disagree”, even if they share a common prior. The epistemological significance of these examples is presented in terms of their role in a defense of the Uniqueness Thesis: If an agent whose total evidence is E is fully rational in taking doxastic attitude D to P, then necessarily, any subject with total evidence E who takes a different attitude to P is less than fully rational. (shrink)

An opinionated introduction to philosophical issues connected to common knowledge.

The common consent argument claims that widespread belief in God is good evidence for God’s existence. Though taken seriously throughout the history of philosophy, the argument died in the 1800s. Our philosophy of religion textbooks ignore it. In this paper, we hope to resuscitate it drawing upon the demographics of religious belief, the cognitive science of religion, and contemporary epistemology. We develop and defend two common consent arguments, which maintain that widespread belief in a High God is good evidence for (...) theism over metaphysical naturalism. (shrink)

The principal question addressed is whether there is a division among common nouns which is similar to a familiar division among noun phrases that designate particular-level individuals: the one which is captured in the relevant literature as the difference between de jure rigid and not de jure rigid singular terms. In relation with the previous philosophical literature relevant to noun rigidity it is argued that the extant positions on the matter are not defended on the basis of well-founded syntactic categories (...) and proper semantic arguments. Proper ways to argue for rigidity ascriptions to nouns are described. Then, such arguments are sought for the case of rigid/non-rigid division among count common nouns. It is shown that there are plausible, albeit inconclusive, reasons to hold that among common nouns (N-bar expressions) only simple common nouns are kind designators, and that if that is the case these simple common nouns will have to be reckoned as de jure rigid designators. (shrink)

The view of nature we adopt in the natural attitude is determined by common sense, without which we could not survive. Classical physics is modelled on this common-sense view of nature, and uses mathematics to formalise our natural understanding of the causes and effects we observe in time and space when we select subsystems of nature for modelling. But in modern physics, we do not go beyond the realm of common sense by augmenting our knowledge of what is going on (...) in nature. Rather, we have measurements that we do not understand, so we know nothing about the ontology of what we measure. We help ourselves by using entities from mathematics, which we fully understand ontologically. But we have no ontology of the reality of modern physics; we have only what we can assert mathematically. In this paper, we describe the ontology of classical and modern physics against this background and show how it relates to the ontology of common sense and of mathematics. (shrink)

According to a common opinion, human olfactory experiences are significantly different from human visual experiences. For instance, olfaction seems to have only rudimentary abilities to represent space; it is not clear whether olfactory experiences have any mereological structure; and while vision presents the world in terms of objects, it is a matter of debate whether there are olfactory object-representations. This paper argues that despite these differences visual and olfactory experiences share a hierarchical subject/property structure. Within this structure, olfactorily experienced odours (...) and visual objects have the same status: they are primary subjects which unify other represented elements into perceptual units. (shrink)

The principle of the common cause claims that if an improbable coincidence has occurred, there must exist a common cause. This is generally taken to mean that positive correlations between non-causally related events should disappear when conditioning on the action of some underlying common cause. The extended interpretation of the principle, by contrast, urges that common causes should be called for in order to explain positive deviations between the estimated correlation of two events and the expected value of their correlation. (...) The aim of this paper is to provide the extended reading of the principle with a general probabilistic model, capturing the simultaneous action of a system of multiple common causes. To this end, two distinct models are elaborated, and the necessary and sufficient conditions for their existence are determined. (shrink)

Two chapters -- "Common Arguments about Abortion" and "Better (Philosophical) Arguments About Abortion" -- in one file, from the open access textbook "Introduction to Ethics: An Open Educational Resource" edited by Noah Levin. -/- Adults, children and babies are arguably wrong to kill, fundamentally, because we are conscious, aware and have feelings. Since early fetuses entirely lack these characteristics, we argue that they are not inherently wrong to kill and so most abortions are not morally wrong, since most abortions are (...) done early in pregnancy before consciousness and feeling develop in the fetus. Furthermore, since the right to life is not the right to someone else’s body, fetuses might not have the right to the pregnant woman’s body, and so she has the right to not allow the fetus use of her body; this further justifies abortion, at least, until technology allows for the removal of fetuses to other wombs. Since morally permissible actions should be legal, abortions should be legal. -/- In the course of arguing for these claims, we: -/- discuss how to best define abortion; dismiss many common “question-begging” arguments that merely assume their conclusion, instead of giving genuine reasons for them; refute some often-heard “everyday arguments” about abortion; explain why some influential philosophical arguments against abortion are unsuccessful; provide some positive arguments that at least early abortions are not wrong; briefly discuss the ethics and legality of later abortions, and more. -/- Little of this discussion should be taken as absolute “proof” of anything, as this is merely a reasoned introduction to the issues: much more needs to be discussed, always. (shrink)

There is growing attention towards atypical brain-body interactions and interoceptive processes and their potential role in psychiatric conditions, including affective and anxiety disorders. This paper aims to synthesize recent developments in this field. We present emerging explanatory models and focus on brain-body coupling and modulations of the underlying neurocircuitry that support the concept of a continuum of affective disorders. Grounded in theoretical frameworks like peripheral theories of emotion and predictive processing, we propose that altered interoceptive processes might represent transdiagnostic mechanisms (...) that confer common vulnerability traits across multiple disorders. A deeper understanding of the interplay between bodily states and neural processing is essential for a holistic conceptualization of mental disorders. (shrink)

Discussions of the relation between confessionalization and early modern natural philosophy have tended to focus on the influence of certain theological doctrines characteristic of the different Christian denominations on specific analyses of the material world. By contrast, I would like to argue that an obstacle to formulating all-too general confessionalization claims derives from ecumenical uses of early modern natural philosophy that serve to provide rational grounds for commonly acceptable theological views. One such ecumenical approach can be found in the work (...) of Kenelm Digby. I develop such a line of interpretation by comparing Digby’s argumentative strategy with the argumentative strategies of one of his readers, Gottfried Wilhelm Leibniz, who in his early writings developed a sophisticated version of mechanical philosophy. Leibniz refers to Digby’s analysis of the powers of organisms, and, like Digby, he uses the limits of these powers as arguments for the existence of immaterial, and hence immortal human souls. The convergence between Digby and the early Leibniz on this central theological point can be seen as an outcome of the analysis of our common notions concerning the nature of matter and of the analysis of our common notions concerning the mental capacities of humans. (shrink)

We present a dynamic model of the evolution of communication in a Lewis signaling game while systematically varying the degree of common interest between sender and receiver. We show that the level of common interest between sender and receiver is strongly predictive of the amount of information transferred between them. We also discuss a set of rare but interesting cases in which common interest is almost entirely absent, yet substantial information transfer persists in a *cheap talk* regime, and offer a (...) diagnosis of how this may arise. -/- . (shrink)

In “Toward an Ontology of Commercial Exchange” [11], we proposed human readable definitions for terms that are central to an ontology of commercial exchange. This paper furthers that project in two ways. First, the definitions have been modified to be compatible with the Common Core Ontologies (CCO). CCO is used in a wide variety of domains including the industrial and military domains. Having a commerce ontology compatible with CCO allows data about the exchange of goods relevant to those domains to (...) be tagged with compatible ontologies. Second, we propose preliminary formalizations of these definitions, with the aim of informing the creation of an ontology which can be used to assist in reasoning over businessrelated data. (shrink)

What role, if any, should our moral intuitions play in moral epistemology? We make, or are prepared to make, moral judgments about a variety of actual and hypothetical situations. Some of these moral judgments are more informed, reflective, and stable than others (call these ourconsideredmoral judgments); some we make more confidently than others; and some, though not all, are judgments about which there is substantial consensus. What bearing do our moral judgments have on philosophical ethics and the search for first (...) principles in ethics? Should these judgments constrain, or be constrained by, philosophical theorizing about morality? On the one hand, we might expect first principles to conform to our moral intuitions or at least to our considered moral judgments. After all, we begin the reflection that may lead to first principles from particular moral convictions. And some of our moral intuitions (e.g., that genocide is wrong) are more fixed and compelling than any putative first principle. If so, we might expect common moral beliefs to have an important evidential role in the construction and assessment of first principles. On the other hand, common moral beliefs often rest on poor information, reflect bias, or are otherwise mistaken. We often appeal to moral principles to justify our particular moral convictions or to resolve our disagreements. Insofar as this is true, we may expect first principles to provide a foundation on the basis of which to test common moral beliefs and, where necessary, form new moral convictions. (shrink)

Some arguments against the assumption that ordinary people may share common knowledge are sound. The apparent cost of such arguments is the rejection of scientific theories that appeal to common knowledge. My proposal is to accept the arguments without rejecting the theories. On my proposal, common knowledge is shared by ideally rational people, who are not just mathematically simple versions of ordinary people. They are qualitatively different from us, and theorizing about them does not lead to predictions about our behavior. (...) Nevertheless, models of action that assume common knowledge have a role to play in our understanding of collective rationality. (shrink)

The main aim of this dissertation is to model the different ways in which we use language when we engage with fiction. This main aim subdivides itself into a number of puzzles. We all know that dragons do not exist. Yet, when I read the Harry Potter novels, I do accept the existence of dragons. How do we keep such fictional truths separate from ‘ordinary’ non-fictional truths? What is the difference between Tolkien writing down all sorts of falsities, and a (...) liar who also says all sorts of untrue things? How can it be true that Frodo was born in the Shire while it is also true that he was invented by Tolkien? Given that a fiction such as Pride and Prejudice is not about the actual world, how can I learn things about 19th century etiquette in England by reading this novel? -/- I develop a coherent semantic analysis of these different puzzles: the ‘workspace account’. This theory is an extension of Stalnaker’s famous pragmatic ‘common ground’ framework. In this framework, assertions are modelled as proposals to update the ‘common ground’ (the set of shared assumptions) between conversational interlocutors. (shrink)

The article presents two antagonistic views of reality, one coming from modern science and the other from flat-Earthers, to discuss the relationships between common-sense, science, and reality. The concrete fact under analysis refers to the solar system and the position of the earth in this system, that is, the duality of geocentrism and heliocentrism. After discussing the reasons for denying geocentrism with arguments from theoretical physics, we return to discussing the duality against the backdrop of the history of science, showing (...) that the issue was much more complex when the Ptolemaic paradigm passed to the Copernican one in the 16th century. The article shows that the paradigm shift presupposed the invention of a reality that took more than 100 years to stop being an invention and become a reality. From an epistemological point of view, a discovery, even if it corresponds to empirical facts, needs theoretical support to be considered true or, in the terms we are dealing with here, to be considered reality and part of common sense. Ontologically speaking, we cannot consider a certain worldview as an existing reality beyond the mental model that created it. (shrink)

Some philosophical theories of the nature of color aim to respect a "common sense" conception of color: aligning with the common sense conception is supposed to speak in favor of a theory and conflicting with it is supposed to speak against a theory. In this paper, we argue that the idea of a "common sense" conception of color that philosophers of color have relied upon is overly simplistic. By drawing on experimental and historical evidence, we show how conceptions of color (...) vary along several dimensions and how even supposedly "core" components of the contemporary "common sense" conception of color are less stable than they have been thought to be. (shrink)

In this paper I argue in favour of a moderate and selective version of scientific realism with respect to the existence of some physical theoretical objects and the truth of some statements about them. The analysis of common sense or ordinary experience reveals that existence and truth assertions concerning familiar objects are warranted if they satisfy what we call the criteria of presence and invariance. Ordinary objects exemplify a form or a structure determined by constant and changing features with respect (...) to the variation of the conditions of observation and a content given in sensory presence. It is claimed that some theoretical physical objects that possess a structure or a form determined by invariant and variable characteristics relatively to a specified group of transformations and a content provided by observations on which the measurement of those characteristics is grounded can also be justifiably asserted to exist. We further show that this defence of scientific realism in physics doesn't fall prey to the objections that have been raised against the usual vindication of scientific realism based on the no-miracle argument. Some standard objections to scientific realism, such as the underdetermination of theories by observations and the pessimistic meta-induction, are examined and shown to be unconvincing. (shrink)

I offer a line of argument that aims at the conclusion that the notion of radically different and incommensurable systems of value is incoherent, which would mean that the presumption of some significant common ground of valuation is rationally required in value inquiry.

This paper is the product of an interdisciplinary, interreligious dialogue aiming to outline some of the possibilities and rational limits of supernatural religious belief, in the light of a critique of David Hume’s familiar sceptical arguments -- including a rejection of his famous Maxim on miracles -- combined with a range of striking recent empirical research. The Humean nexus leads us to the formulation of a new ”Common-Core/Diversity Dilemma’, which suggests that the contradictions between different religious belief systems, in conjunction (...) with new understandings of the cognitive forces that shape their common features, persuasively challenge the rationality of most kinds of supernatural belief. In support of this conclusion, we survey empirical research concerning intercessory prayer, religious experience, near-death experience, and various cognitive biases. But we then go on to consider evidence that supernaturalism -- even when rationally unwarranted -- has significant beneficial individual and social effects, despite others that are far less desirable. This prompts the formulation of a ”Normal/Objective Dilemma’, identifying important trade-offs to be found in the choice between our humanly evolved ”normal’ outlook on the world, and one that is more rational and ”objective’. Can we retain the pragmatic benefits of supernatural belief while avoiding irrationality and intergroup conflict? It may well seem that rationality is incompatible with any wilful sacrifice of objectivity. But in a situation of uncertainty, an attractive compromise may be available by moving from the competing factions and mutual contradictions of ”first-order’ supernaturalism to a more abstract and tolerant ”second-order’ view, which itself can be given some distinctive intellectual support through the increasingly popular Fine Tuning Argument. We end by proposing a ”Maxim of the Moon’ to express the undogmatic spirit of this second-order religiosity, providing a cautionary metaphor to counter the pervasive bias endemic to the human condition, and offering a more cooperation- and humility-enhancing understanding of religious diversity in a tense and precarious globalised age. (shrink)

(Penultimate Draft). I consider common ground in its evolutionary context and argue for several claims. First, common ground is widely (though not universally) distributed among social animals. Second, the use of common ground is favored (i.e. is predicted to emerge and subsequently persist) among populations of animals whose members face recurrent interdependent decision-making problems in which the benefit of their courses of action are contingent on the variable choices of their stable social partner(s). Third, humans deploy cognitive and social mechanisms (...) for establishing and updating common ground that are not deployed by other living animals—the use of common ground has not only persisted within the human lineage but been amplified as well. Finally, I suggest that some of these points count against the iterative construal of common ground. In its place, I propose an alternative psychological construal of common ground in terms of what I will call reciprocal responsiveness. (shrink)

A main function of common natures in Avicenna’s metaphysics is supposed to be providing an objective ground for the categories. Thus, it is commonly assumed that in his metaphysics things are objectively divided into the categories into which they are because members of each category share the same common nature. However, common natures cannot perform the function unless they are shared, in a real sense of the word, by the members of the respective categories, and it is not clear at (...) all in what real sense Avicenna took common natures to be shared by them. On the one hand, he rejected Platonic and Aristotelian realisms about common natures, the two standard accounts of how common natures are shared by their instances. On the other hand, it is unclear that his alternative account(s) of common natures renders them genuinely common. The primary goal of this paper is to examine whether Avicenna’s common natures can provide an objective ground for the categories. It considers various interpretations of Avicenna's account and argues that they are either incorrect interpretations of Avicenna or do not render common natures genuinely common. It concludes with proposing to look elsewhere in Avicenna’s system to find the objective ground. (shrink)

Many philosophers think that common sense knowledge survives sophisticated philosophical proofs against it. Recently, however, Bryan Frances (forthcoming) has advanced a philosophical proof that he thinks common sense can’t survive. Exploiting philosophical paradoxes like the Sorites, Frances attempts to show how common sense leads to paradox and therefore that common sense methodology is unstable. In this paper, we show how Frances’s proof fails and then present Frances with a dilemma.

Bas van Fraassen endorses both common-sense realism — the view, roughly, that the ordinary macroscopic objects that we take to exist actually do exist — and constructive empiricism — the view, roughly, that the aim of science is truth about the observable world. But what happens if common-sense realism and science come into conflict? I argue that it is reasonable to think that they could come into conflict, by giving some motivation for a mental monist solution to the measurement problem (...) of quantum mechanics. I then consider whether, in a situation where science favors the mental monist interpretation, van Fraassen would want to give up common-sense realism or would want to give up science. (shrink)

The meaning of an utterance is often enriched by the pragmatic context in which it is uttered. This is because in ordinary conversations we routinely and uncontroversially compress what we say, safe in the knowledge that those interpreting us will ‘add in’ the content we intend to communicate. Does the same thing hold true in the case of legal utterances like ‘This constitution protects the personal rights of the citizen’ or ‘the parliament shall have the power to lay and collect (...) taxes’? This article addresses this question from the perspective of the constitutional originalist—the person who holds that the meaning of a constitutional text is fixed at some historical moment. In doing so, it advances four theses. First, it argues that every originalist theory is committed to some degree of pragmatic enrichment, the debate is about how much. Second, that in determining which content gets ‘added in’, originalists typically hold to a common knowledge standard for enrichment, protestations... (shrink)

Social objects have become common subjects of interest to both social ontologists and conceptual engineers, but up to this point much of the philosophical work from these two fields has surprisingly been done in isolation from each field. I show how these prolific research fields—social ontology, conceptual engineering, and conceptual ethics—can mutually benefit each other through a unifying model I propose called the 2D-CE model that shows the dependence relations between a given concept, its instantiation conditions, and whatever language represents (...) such devices. This model combines a model from social ontology with insights from conceptual engineering and conceptual ethics into a powerful metaphilosophical tool that highlights the role of social agents for metaphysical and metalinguistic explanation. A major benefit of the model is its utility for not only social philosophy, but for other areas of research beyond the social world. (shrink)