The endocellular bacteriumWolbachiamanipulates the reproduction of its arthropod hosts for its own benefit by various means, the most widespread being cytoplasmic incompatibility (CI). To date, the molecular mechanism involved in CI has not been elucidated. We examine here three different CI models described in previous literature, namely, the “lock‐and‐key”, “titration–restitution” and “slow‐motion” models. We confront them with the full range of CI patterns discovered so far, including the most complex ones such as multiple infections, asymmetrical and partial compatibility relationships and (...) the existence ofWolbachiavariants that can rescue the host from CI but not induce it. We conclude that the lock‐and‐key model is the most parsimonious of the models and fits the observations best. The two other models cannot be categorically invalidated, but they encounter some difficulties that make additional hypotheses necessary. BioEssays 25:259–265, 2003. © 2003 Wiley Periodicals, Inc. (shrink)

We discuss a recent work by J. Lawrence et al. [arxiv.org/abs/2208.11793] criticizing relational quantum mechanics (RQM) and based on a famous nonlocality theorem Going back to Greenberger Horne and Zeilinger (GHZ). Here, we show that the claims presented in this recent work are unjustified and we debunk the analysis.

The fact that there are quantum observables without a simultaneous measurement is one of the fundamental characteristics of quantum mechanics. In this work we expand the concept of joint measurability to all kinds of possible measurement devices, and we call this relation compatibility. Two devices are incompatible if they cannot be implemented as parts of a single measurement setup. We introduce also a more stringent notion of incompatibility, strong incompatibility. Both incompatibility and strong incompatibility are rigorously characterized and their (...) difference is demonstrated by examples. (shrink)

It is commonly held that Wittgenstein abandoned the Tractatus largely because of a problem concerning color incompatibility. My aim is to solve this problem on Wittgenstein’s behalf. First I introduce the central program of the Tractatus (§1) and the color incompatibility problem (§2). Then I solve the problem without abandoning any Tractarian ideas (§3), and show that given certain weak assumptions, the central program of the Tractatus can in fact be accomplished (§4). I conclude by distinguishing my system of analysis (...) from others and by explaining the historical underpinnings of my understanding of the nature of elementary propositions (§5). (shrink)

I have sketched the well-known distinction between facts and evidence not to defend or attack it , but rather as a preface to a key episode in the history of the conceptual categories of fact and evidence. My question is neither, “Do neutral facts exist?” nor “How does evidence prove or disprove?” but rather, “How did our current conceptions of neutral facts and enlisted evidence, and the distinction between them, come to be?” How did evidence come to (...) be incompatible with intention, and is it possible to imagine a kind of evidence that is intention-laden?It is my claim that partial answers to these questions lie buried in the sixteenth- and seventeenth-century literature on prodigies and miracles. I shall argue that during this period prodigies briefly became the prototype for a new kind of scientific fact, and that miracles briefly exemplified a form of evidence patent to the senses and crucially dependent on intention. Both conceptions diverge sharply not only from current notions of facts and evidence, but also from medieval views on the nature of prodigies and miracles. Prodigies were originally closely akin to portent, divine signs revealing God’s will and things to come; miracles were more intimately associated with the private experience of grace than with the public evidence of the senses. Prodigies were transformed from signs into nonsignifying facts, and miracles into compelling evidence, as part of more sweeping changes in natural philosophy and theology in the mid-seventeenth century. Lorraine Daston is professor of history of science at the University of Göttingen, Federal Republic of Germany. She is the author of Classical Probability in the Enlightenment and is currently at work on a history of scientific objectivity. (shrink)

Facts happen at every interaction, but they are not absolute: they are relative to the systems involved in the interaction. Stable facts are those whose relativity can effectively be ignored. In this work, we describe how stable facts emerge in a world of relative facts and discuss their respective roles in connecting quantum theory and the world. The distinction between relative and stable facts resolves the difficulties pointed out by the no-go theorem of Frauchiger and (...) Renner, and is consistent with the experimental violation of the Local Friendliness inequalities of Bong et al.. Basing the ontology of the theory on relative facts clarifies the role of decoherence in bringing about the classical world and solves the apparent incompatibility between the ‘linear evolution’ and ‘projection’ postulates. (shrink)

The incompatibility within the context of modeling cannot be established simpliciter. The fact that modeling is understood as an activity whose representational power can only be partially established, may minimize the supposed existence of incompatible models. Indeed, it is argued from perspectivism that incompatibility can be dissolved, meaning that it becomes trivial or simply false due to the inherently pragmatic and partial nature of the act of representation and modeling. From this perspective, incompatibility can only be a consequence of (...) a misunderstanding of the very nature of modeling and representation In this sense, in order to tackle this strategy at its root from perspectivism, we will first need to outline the maximal perspectivism thesis, attempting to identify the possible escape routes that perspectivism could find in order to explain incompatibility as an illusory incompatibility. Then, we will analyze Valence Bond Model and Molecular Model of covalent bonds, and we will conclude that the dissuasive strategies used to minimize and/or disregard incompatibility prove to be fruitless. (shrink)

After Tractatus Logico-Philosophicus, Wittgenstein realized that elementary propositions may logically conflict with each other, due to the fact that the most elementary measurements may contradict each other. This led to the view that logic consists of various calculi. A calculus consists of measurement scales, each scale being a rule for the application of numbers. These scales determine logical relationships between elementary propositions by reason of arithmetical relations. Attempts to reject Wittgenstein's change in viewpoint, which ignore the relevance of measurement and (...) arithmetic, are remiss. In this light, I discuss Sarah Moss’s criticism of intermediate Wittgenstein. (shrink)

The aim of this article is to generalize logics of formal inconsistency (LFIs) to systems dealing with the concept of incompatibility, expressed by means of a binary connective. The basic idea is that having two incompatible formulas to hold trivializes a deduction, and as a special case, a formula becomes consistent (in the sense of LFIs) when it is incompatible with its own negation. We show how this notion extends that of consistency in a non-trivial way, presenting conservative (...) translations for many simple LFIs into some of the most basic logics of incompatibility, thereby evidencing in a precise way how the notion of incompatibility generalizes that of consistency. We provide semantics for the new logics, as well as decision procedures, based on restricted non-deterministic matrices. The use of non-deterministic semantics with restrictions is justified by the fact that, as proved here, these systems are not algebraizable according to Blok-Pigozzi nor are they characterizable by finite Nmatrices. Finally, we briefly compare our logics to other systems focused on treating incompatibility, specially those pioneered by Brandom and further developed by Peregrin. (shrink)

If propositions are made true in virtue of corresponding to facts, then what are the truth-makers of true negative propositions such as ‘The apple is not red’? Russell argued that there must be negative facts to account for what makes true negative propositions true and false positive propositions false. Others, more parsimonious in their ontological commitments, have attempted to avoid them. Wittgenstein rejected them since he was loath to think that the sign for negation referred to a negative (...) element in a fact. A contemporary of Russell’s, Raphael Demos, attempted to eliminate them by appealing to ‘incompatibility’ facts. More recently, Armstrong has appealed to the totality of positive facts as the ground of the truth of true negative propositions. Oaklander and Miracchi have suggested that the absence or non-existence of the positive fact (which is not itself a further fact) is the basis of a positive proposition being false and therefore of the truth of its negation. (shrink)

Jonathan Weisberg claims that certain probability assessments constructed by Jeffrey conditioning resist subsequent revision by a certain type of after-the-fact defeater of the reasons supporting those assessments, and that such conditioning is thus “inherently anti-holistic.” His analysis founders, however, in applying Jeffrey conditioning to a partition for which an essential rigidity condition clearly fails. Applied to an appropriate partition, Jeffrey conditioning is amenable to revision by the sort of after-the-fact defeaters considered by Weisberg in precisely the way that he demands.

In the book “Freedom of the Will”, Jonathan Edwards put forward a strong ar-gument for theological fatalism. This argument, I suppose, can be considered as the universal basis for discussion between Fatalists and Anti-Fatalists in the 20th century, especially in the context of the most powerful argument for fatalism, introduced by Nelson Pike. The argument of Edwards rests upon the following principles: if something has been the case in the past, it has been the case necessarily ; if God knows (...) something, it is not the case that ~A is possible. Hence, Edwards infers that if God had foreknowledge that A, then A is necessary, and it is not the case that someone could voluntarily choose ~A. The article argues that the Edwards` inference Kgp → □p rests upon the modal fallacy; the inference „God had a knowledge that p will happen, therefore „God had a knowledge that p will happen” is the proposition about the past, and hence, the necessarily true proposition“ is ambiguous; thus, it is not the case that this proposition necessarily entails the impossibility of ~p; it is not the case that p, being known by God, turns out to be necessary. Thus, we can avoid the inference of Edwards that if Kgp is a fact of the past, then we cannot freely choose ~p. It has also been shown that the main provisions of the argument of Edwards remain significant in the context of contemporary debates about free will and foreknowledge. Additionally, I introduce a new challenge for fatalism – argument from Brouwerian axiom. (shrink)

I like the view that the fundamental facts are logically simple, not complex. However, some universal generalizations and negations may appear fundamental, because they cannot be explained by logically simple facts about particulars. I explore a natural reply: those universal generalizations and negations are true because certain logically simple facts—call them —are the fundamental facts. I argue that this solution is only available given some metaphysical frameworks, some conceptions of metaphysical explanation and fundamentality. It requires a (...) ‘fitting’ framework, according to which metaphysical theories explain the aptness of representations in terms of how things are fundamentally. Fitting frameworks conceive of the fundamental facts as those that are metaphysically ‘real’; call them the ‘facts-in-reality’. Moreover, we must take as primary a plural notion of the facts-in-reality, not the singular notion of a fact-in-reality. By contrast, a metaphysics that grounds facts is incompatible with my strategy for keeping the fundamental facts logically simple. (shrink)

The author argues for the existence of negative facts. The first section is devoted to an argument, grounded on truthmaker maximalism, that aims at demonstrating that negative facts must exist at least as false propositions’ falsemakers. In the second section, the author analyzes and criticizes several attempts to get rid of negative facts: the ones based on incompatibilities, absences, totality facts and polarities, as well as the ones based on various restrictions on truthmaker maximalism or on (...) the non-acceptance of facts as truthmakers. In particular, it is shown that an ontology that accepts negative facts is simpler than an ontology that denies their existence and that in general, many attempts to get rid of negative facts turn out to recognize the existence of such entities or of entities that are more mysterious than negative facts themselves. (shrink)

This article explores the explanation of incommensurable theories as alternative conceptual schemes based on different categorical or taxonomic structures. The concept of incommensurability, which is a cornerstone of the late philosophy of Thomas Kuhn, is elucidated, reflecting his approach to avoid assessing the history of science in terms of the truth and falsity of scientific paradigms. It is shown how Kuhn has combined Frege – Russell’s descriptivist semantics and the causal theory of reference by Hilary Putnam and Saul Kripke. His (...) version of semantics consists in redefinition of natural kinds in terms of neuropsychology, in substantiating mentalist and internalist perspective on language. Kuhn’s philosophical position is identified as post-Darwinian Kantianism. It is expressed not in a priori nature of knowledge, but in its determination by conceptual schemes and sociocultural relativity. Despite the fact that the incommensurable terms seem to occur in the history of knowledge, incommensurability remains not the clearest and most consistent way of thinking on the history of science. Kuhn repeatedly refined his views on incommensurability, ultimately aligning it more closely with alternative classifications of objects serving as a framework for subsequent theories. Natural kind concepts, like taxonomic units, distribute the perceived objects into hierarchies reflecting structures of external world. On the one hand, kinds differentiate objectively existing objects into groups. On the other hand, kind terms are both mental modules and cultural constructs that are used to organize the experience of language speakers, identify objects, and provide the basis for group beliefs. Kuhn posits that the development of scientific theories constitutes an evolution of conceptual schemes characterized by disparities and incommensurability. (shrink)

Judicial formalism is perceived as fully compliant with the requirements of the rule of law. With its reliance on plain meaning and its reluctance to apply historical, purposive and functional interpretative premises, it seems an ideal tool for constraining discretionary judicial powers and securing the predictability of law’s application, which latter is one of the main tenets of the rule of law. In this paper, I argue that judicial formalism is based on a misguided model of language, and as such (...) cannot deliver what it promises. In fact, judicial decisions based on formalistic reasoning are surprising to their addressees and instead of promoting predictability, they undermine it. A judicial strategy fully compliant with the rule of law requires a different vision of language than that proposed by judicial formalism, and as a consequence, a different, moderately non-formalistic conception of legal interpretation. (shrink)

In this paper I argue for the incompatibility of three claims, each of them quite attractive to a theist. First, the doctrine of deep dependence: the universe depends for its existence, in a non-causal way, on God. Second, the doctrine of true transcendence: the universe is wholly distinct from God; God is separate and apart from the universe in respect of mereology, modes, and mentality. Third, the doctrine of robust creaturely freedom: some creature performs some act such that he could (...) have done other than he in fact did. After laying out the claims, I show that their conjunction has its adherents—most clearly, the medieval Jewish philosopher, Maimonides. I then argue in detail that the claims are in fact incompatible. I conclude with a discussion of which of the claims is best jettisoned, drawing in part on the work of the Absolute Idealist, Mary Calkins. (shrink)

The standard conception of God is that of a necessary being. On a possible worlds semantics, this entails that God exists at every possible world. According to the modal realist account of David Lewis, possible worlds are understood to be real, concrete worlds—no different in kind from the actual world. Some have argued that Lewis’s view is incompatible with classical theism (e.g., Sheehy, 2006). More recently, Ross Cameron (2009) has defended the thesis that Lewisian modal realism and classical theism (...) are in fact compatible. I argue that this is not the case. Modal realism, I argue, is equipped to accommodate necessary beings in only one of three ways: (1) By way of counterpart theory, or (2) by way of a special case of trans-world identity for causally inert necessary beings (e.g., pure sets), or else (3) causally potent ones which lack accidental intrinsic properties. However, each of these three options entails unacceptable consequences—(1) and (2) are incompatible with theism, and (3) is incompatible with modal realism. I conclude that (at least) one of these views is false. (shrink)

. In a number of papers I have sought to discuss and cast some doubt on a certain strategy of response to an argument that purports to show that God's foreknowledge is incompatible with human freedom. This argument proceeds from the alleged ‘fixity of the past’ to the conclusion that God's foreknowledge is incompatible with human freedom. William Lane Craig has criticized my approach to these issues. Here I should like to respond to some of Craig's claims. My (...) goal is to attempt to achieve a clearer, more penetrating view of some of the issues pertaining to the relationship between God's foreknowledge and human freedom. The focus here will be on a strategy of response to the incompatibilist's argument which is associated with William of Ockham. (shrink)

Armstrong’s combinatorial theory of possibility faces the obvious difficulty that not all universals are compatible. In this paper I develop three objections against Armstrong’s attempt to account for property incompatibilities. First, Armstrong’s account cannot handle incompatibilities holding among properties that are either simple, or that are complex but stand to one another in the relation of overlap rather than in the part/ whole relation. Secondly, at the heart of Armstrong’s account lies a notion of structural universals which, building on an (...) objection by David Lewis, is shown to be incoherent. I consider and reject two alternative ways of construing the composition of structural universals in an attempt to meet Lewis’ objection. An important consequence of this is that all putative structural properties are in fact simple. Finally, I argue that the quasi-mereological account presupposes modality in a way that undermines the reductionist aim of the combinatorialist theory of which it is a central part. I conclude that Armstrong’ quasi-mereological account of property incompatibility fails. Without that account, however, Armstrong’s combinatorial theory either fails to get off the ground, or else must give up its goal of reducing the notion of possibility to something non-modal. (shrink)

The image of perception as openness to fact is best understood as the claim that the contents of perception are mind-independent facts. However, I argue against John McDowell that this claim, which he accepts, is incompatible with his conceptualism, namely the thesis that the contents of perception are fully conceptual. If we want to give justice to the image of perception as openness to facts, we have to acknwoledge that perception relates us to a non-conceptual world.

Only in recent years have the German bioethical and biopolitical debates begun to decline due to rationalization concerning stem cell research or the pre-implantation diagnosis related to the ethical status of the beginning of human life. This is due to the fact that in these contexts we have to ask whether quality of life assessment is ethically acceptable in principle. A fundamental premise in the current debate is that quality of life assessment and human dignity are incompatible. In this (...) paper four different standards of quality of life assessment are distinguished (the naturalistic, the social, the interpersonal and the personal standard). Then an interpretation of human dignity is developed which rests on the essential feature of human beings to develop the capacity for personal autonomy. Finally it is argued that human dignity in this sense is compatible with quality of life assessments based on the personal and the interpersonal standard. (shrink)

Truthmaker maximalism is the claim that every truth has a truthmaker. The case of negative truths leads some philosophers to postulate negative states of affairs or to give up on truthmaker maximalism. This paper defends a version of the incompatibility view of negative truths. Negative truths can be made true by positive facts, and thus, truthmaker maximalism can be maintained without postulating negative states of affairs.

It is commonly assumed that facts would be complex entities made out of particulars and universals. This thesis, which I call Compositionalism, holds that parthood may be construed broadly enough so that the relation that holds between a fact and the entities it ‘ties’ together counts as a kind of parthood. I argue firstly that Compositionalism is incompatible with the possibility of certain kinds of fact and universal, and, secondly, that such facts and universals are possible. I (...) conclude that Compositionalism is false. What all these kinds of fact and universal have in common is a violation of supplementation principles governing any relation that may be intelligibly regarded as a kind of parthood. Although my arguments apply to Compositionalism generally, I focus on recent work by David Armstrong, who is a prominent and explicit Compositionalist. (shrink)

This book explores the ethical dilemma clinicians may face when disclosing a diagnosis of atypical sex. The moment of disclosure reveals an epistemic incompatibility between scientific fact and social meaning in relation to sex. Attempting to assess the bio-psychosocial implications of this dilemma highlights a complex historic antagonism between fact and meaning making satisfactory resolution of this dilemma difficult. Drawing on David Hume, WVO Quine and Michel Foucault the author presents an integrative model, which views scientific fact and social meaning (...) as codetermining threads in one fabric of knowledge. From this epistemic perspective, the ethical dilemma is understood as a tear in the fabric signifying a rupturing of ontological integrity. To mend this tear and resolve the ethical dilemma three metaphysical perspectives are considered: essentialism, naturalism and emergentism. The book’s unique features include: an exploration of the impact of diagnostic disclosure on people with atypical sex ; a synthesis of the epistemic perspectives of social and natural science facilitating interdisciplinary collaboration; a critical evaluation of three metaphysical perspectives on atypical sex ; the application of Hume’s epistemological and moral distinctions to contemporary biomedicine and bioethics. The book’s target audience includes academics, students and professionals whose work intersects the natural and social sciences, and individuals interested in the metaphysics, epistemology and meta-ethics of sex. (shrink)

Russell's introduction of negative facts to account for the truth of "negative" sentences or beliefs rests on his collaboration with Wittgenstein in such efforts as the characterization of formal necessity, the theory of logical atomism, and the use of the Ideal Language. In examining their views we arrive at two conclusions. First, that the issue of negative facts is distinct from questions of meaning or intentionality; what a sentence or belief means or is about rather than what makes (...) it true or false. Second, that the ontological use of the Ideal Language is incompatible with the requirements of its employment in the logical study of inferences. On this basis we conclude that despite elaborations by recent proponents, the doctrine of negative facts lacks adequate support, and perhaps more importantly, it is proper ontological method to free the Ideal Language from the exigencies of a symbolism constructed for logical investigation. (shrink)

The idea that the world is made of particles — little discrete, interacting objects that compose the material bodies of everyday experience — is a durable one. Following the advent of quantum theory, the idea was revised but not abandoned. It remains manifest in the explanatory language of physics, chemistry, and molecular biology. Aside from its durability, there is good reason for the scientific realist to embrace the particle interpretation: such a view can account for the prominent epistemic fact that (...) only limited knowledge of a portion of the material universe is needed in order to make reliable predictions about that portion. Thus, particle interpretations can support an abductive argument from the epistemic facts in favor of a realist reading of physical theory. However, any particle interpretation with this property is untenable. The empirical adequacy of modern particle theories requires adoption of a postulate known as permutation invariance — the claim that interchanging the role of two particles of the same kind in a dynamical state description results in a description of the identical state. It is the central claim of this essay that PI is incompatible with any particle interpretation strong enough to account for the epistemic facts. This incompatibility extends across all physical theories. To frame and motivate the inconsistency argument, I begin by fixing the relevant notion of particle. To single out those accounts of greatest appeal to the realist, I develop the logically weakest particle ontology that entails the epistemic fact that the world is piecewise predictable, an ontology I call ‘minimal atomism’. The entire series of scientific conceptions of the particle, from Newton’s mechanically interacting corpuscles to the ‘centers of force’ in classical field theories, all comport with MA. As long as PI is left out, even quantum mechanics can be viewed this way. To assess the impact of PI on this picture, I present a framework for rigorously connecting interpretations to physical theories. In particular, I represent MA as a set of formal conditions on the models of physical theories, the mathematical structures taken to represent states of the world. I also formulate PI — originally introduced as a postulate of non-relativistic quantum mechanics — in theory independent terms. With all of these pieces in hand, I am then able to present a proof of the inconsistency of PI and MA. In the second part of the essay, I survey responses to the inconsistency result open to the scientific realist. The two most plausible approaches involve abandoning particles in one way or another. The first alternative interpretation considered takes the property bearing objects of the world to be regions of space rather than particles. In this view, the properties once attributed to particles in quantum states are attributed instead to one or more regions of space. PI no longer obtains in this case, at least not as a statement about the permutation symmetry of property bearers. Rather, the new interpretation naturally imposes an analogous constraint on quantum states. The second major approach to evading the inconsistency result is to dispense with objects altogether. This is the recommendation of so-called ‘Ontic Structural Realism’. The central OSR thesis is that structure rather than entities are the basic ontological components of the world. OSR is intended to embrace the ‘miracle’ argument in favor of scientific realism while avoiding the pessimistic meta-induction. I demonstrate that one principal motivation for OSR based on the under-determination of interpretations in QM is actually dissolved by the incompatibility result. At the same time, I suggest reasons to think that OSR fares no better with respect to the pessimistic meta-induction than traditional realism does. Thus, while PI and MA may be incompatible, object ontologies remain the best option for the realist. (shrink)

Hugh Mellor has proposed what appears to be a new solution to the problem of intrinsic change (Mellor 1998). Assuming endurantism and a B‐theoretic, nonpresentist view of time, facts are supposed to have only enduring things and atemporal properties (or relations) as constituents, but no times. The having of properties and relations is not relativised to times. Instead, the whole of a fact is conceived of as temporally localised. It will be argued that this interesting and novel proposal does (...) not succeed as an account of change in the intrinsic properties of things. The basic difficulty is that the view still leads into contradiction, since it makes it incomprehensible how one and the same thing can have both a property and some incompatible property. The having of these incompatible properties is treated as two facts. But to add that these facts have certain temporal locations is of no help for avoiding the contradiction. (shrink)

In talking about the compatibility of quantum observables, discussions often center on the question of whether the corresponding operators commute—even though commutativity is a coarse-grained notion that largely fails to capture the salient “nonclassical” features of quantum theory. Often, too, such discussions involve the issue of whether the operators in question satisfy a Heisenberg-like inequality, of the form ΔA·ΔB≥r>0—even though such inequalities are specific to unbounded operators and (for this and other reasons) are typically not a useful way to discuss (...) joint uncertainty in quantum mechanics. In the present paper we emphasize a simpler dichotomy, in which operator pairs (A, B) are classified according to whether or not states can be found with arbitrarily small dispersions in both A and B. If A and B cannot be made arbitrarily dispersionless simultaneously, then we call A and B an uncertainty pair. Otherwise, we call A and B a certainty pair. An interesting feature of uncertainty pairs in particular is that they are stable, in the sense that if A and B form an uncertainty pair, then slight enough perturbations of A and B must also form an uncertainty pair. This stability, obvious in the finite-dimensional case, follows in general from an operator inequality derived herein. A consequence of this inequality is that perturbed position and momentum operators X+δX and P+δP cannot share an eigenvector unless |δX|·|δP|≥ℏ/2. (Here vertical bars denote the operator norm.) This, despite the fact that (as we show) arbitrarily slight perturbations of X and P can fail to satisfy a Heisenberg inequality—a fact which raises interesting measurement issues in its own right. (shrink)

Lawrence et al. have presented an argument purporting to show that “relative facts do not exist” and, consequently, “Relational Quantum Mechanics is incompatible with quantum mechanics”. The argument is based on a GHZ-like contradiction between constraints satisfied by measurement outcomes in an extended Wigner’s friend scenario. Here we present a strengthened version of the argument, and show why, contrary to the claim by Lawrence et al., these arguments do not contradict the consistency of a theory of relative (...) class='Hi'>facts. Rather, considering this argument helps clarify how one should not think about a theory of relative facts, like RQM. (shrink)

This paper compares and contrasts relational quantum mechanics with a pragmatist view of quantum theory. I first explain important points of agreement. Then I point to two problems faced by RQM and sketch DP?s solutions to analogous problems. Since both RQM and DP have taken the Born rule to require relative facts I next say what these might be. My main objection to RQM as originally conceived is that its ontology of relative facts is incompatible with scientific (...) objectivity and undercuts the evidential base of quantum theory. In contrast DP?s relative facts have all the objectivity we need to accept quantum theory as scientific knowledge. But a very recent modification to RQM has successfully addressed my main objection,bringing the two views into even closer alignment. (shrink)

Jamel Khermimoun considers that Muslims born in France and in the West now build their identity not from an imported model but from a strong sense of belonging to the nation, which they claim at the same time as their Islam. He wants to shed light on his reading of texts guided by the spirit of flexibility and openness advocated by Islam. We must listen carefully to what he has to say to us; one must know how to confront ones (...) own point of view with ones own, and thus enter into a process of dialogue which, as he writes himself, creates real issues and is capable of appeasing the spirits (Jean Baubrot, professor emeritus of the Chair History and Sociology of Secularism [Ecole Pratique des Hautes Etudes in Paris] and author of several books). Through this book, the author has the merit of advocating the creation of a field of mutual acquaintance [...], a base of common values that can help Westerners and Muslims to get out of the tunnel of reciprocal prejudices, to protect together the true notion of secularism that calls for respect for individual choices and the defense of the right of expression (Claudia Mansueto, doctor of literature, professor at the University of Trieste). Jamel Khermimoun provides answers to the questions raised by the place of the Muslim religion in modern societies. For the author, Islam is not incompatible with secularism because it shares with it the most important values which make possible cohabitation, or even mutual enrichment. Instead of opposing them, it encourages us to reinvest the republican principles that make up our societies. [...] It is for those of us who want to understand the world in which they live. The links of Islam to modernity, to knowledge, to the idea of freedom, to the equality of the sexes, to violence, to fanaticism, to racism, are here dealt with frankness and clarity (Victor Loupan, journalist, author, former international reporter at Figaro Magazine). (shrink)

In constructing the concept of truth I believe to be implicit in Sartre's philosophy, I shall inevitably make glancing contact with differences between his and Descartes' understanding of the cogito—their common foundational truth. This family quarrel will, however, remain peripheral to my discussion of what I take to be the core claim of any cogito-argument: that my existence is certain insofar as it results from my thinking. Beyond that, nothing is certain about what Descartes meant by the certainty of the (...) cogito, or about what could reasonably be meant by it. His express inconsistencies in characterizing the force of his cogito-argument are well known, as are the various incompatible, textually more or less defensible, construals of generations of his interpreters. Unsurprisingly, then, the problem of truth for those of his followers, including Sartre, who have not been content to accept cogito, ergo sum as an unanalyzable datum, has tended to centre on proposing more intellectually transparent readings of their ancestor's seemingly inscrutable ergo. (shrink)

It is inconsistent to believe both that values are subjective and that the problem of evil is a good argument against the existence of god. David hume, Bertrand russell, Antony flew, And many others fall into this inconsistency. It arises because the existence or non-Existence of God is an issue about objective fact, But reports or expressions of subjective human states cannot get a grip on objective reality. Since the problem of evil is the only substantial positive argument for the (...) non-Existence of god, The subjectivist unbeliever can be rationally at most an agnostic, Not an atheist. (shrink)

A new version of the incompatibilist argument is developed. Knowledge is justified true belief. If God’s divine knowledge must be justified knowledge, then humans cannot have the “alternative possibilities” type of free will. This incompatibilist argument is immunized against the application of the hard-soft fact distinction. If divine knowledge is justified, then the only kind of facts that God can know are hard facts, permitting this incompatibilist argument to succeed.

A new version of the incompatibilist argument is developed. Knowledge is justified true belief. If God’s divine knowledge must be justified knowledge, then humans cannot have the “alternative possibilities” type of free will. This incompatibilist argument is immunized against the application of the hard-soft fact distinction. If divine knowledge is justified, then the only kind of facts that God can know are hard facts, permitting this incompatibilist argument to succeed.

There is a long history of philosophical intuition that the human mind must be more than physical or mechanical. I argue that this intuition arises from the perfect “transparency” of physical and mechanical states, in the sense that such states have no obscure or occult elements, but are fully intelligible in mathematical terms. In the paper, I derive a contradiction from the claim that such a physical system has genuine intentionality, comparable with an intelligent human. The contradiction arises from the (...) fact that, according to physicalism, the physical properties of a brain state determine the narrow propositional content of any conscious thought occurring in that state. This fact allows a physical property of brain states to be defined using Cantor’s diagonal construction, and then a contradiction results if a physical system is assumed to form thoughts involving that property. (shrink)

Review Article on Jerry A. Coyne, Faith versus Fact: Why Science and Religion are Incompatible.

The recent literature offers several models of the notion of matter of fact supposition1 revealed in the acceptance of the so-called indicative conditionals. Some of those models are qualitative [Collins 90], [Levi 96], [Stalnaker 84]. Other probabilistic models appeal either to infinitesimal probability or two place probability functions. Recent work has made possible to understand which is the exact qualitative counterpart of the latter probabilistic models. In this article we show that the qualitative notion of change that thus arises is (...) hypothetical revision, a notion previously axiomatized in [Arló-Costa 97] and [Arló-Costa & Thomason 96]. This notion is incompatible with AGM as well as with other standard methods of theory change. The way in which matter-of-fact supposition is modeled by hypothetical revision is illustrated via examples. The model is compared with other qualitative accounts of the notion of supposition encoded in two-place probability functions, with models of subjunctive supposition, as well as with some of the well know models of learning. Applications in knowledge representation and in the theory of games and decisions are summarized. (shrink)

The distinction between hard and soft facts has been used by compatibilists to argue that God's divine foreknowledge is not incompatible with human free will. The debate over this distinction has ignored the question of the justification of divine knowledge. I argue that the distinction between hard and soft facts is illusory because the existence of soft facts presupposes that justification exists. Moreover, if the hard fact /soft fact distinction collapses, then God justifiably knows all future (...) events, and human beings cannot possess free will. (shrink)

The distinction between hard and soft facts has been used by compatibilists to argue that God's divine foreknowledge is not incompatible with human free will. The debate over this distinction has ignored the question of the justification of divine knowledge. I argue that the distinction between hard and soft facts is illusory because the existence of soft facts presupposes that justification exists. Moreover, if the hard fact /soft fact distinction collapses, then God justifiably knows all future (...) events, and human beings cannot possess free will. (shrink)

The development of the theory of deliberative democracy is connected to the completion of two tasks. The first is to combine broad political participation with the rationality of the political process. The second is to ensure the political unity of modern societies, which are characterized by a pluralism of often incompatible values, norms, and lifestyles. Within the framework of this theory, the key democratic procedure is rational deliberation open to all interested parties. The purpose of this procedure is to (...) reach an agreement, as stated in the theory of Jurgen Habermas. However, experimental studies of deliberative practices show that they may result not in agreement but in the radicalization of positions. Unlike Habermas, John Rawls believes that a consensus on values and norms is unattainable. His theory of political liberalism attempts to answer the question of how political unity is possible in practically insoluble conflict, that is, in a situation of disagreement. He proposes the ideal of a well-ordered society with the assumption that a just society is one in which there is no agreement on comprehensive doctrines, but there is a consensus on the basic principles of justice. However, Rawls’s theory, in turn, faces a number of significant problems. For example, he was forced to admit that the democratic culture of society is a prerequisite for the formation of basic principles of justice in a well-ordered society. Rawls’s idea about the connections among disagreement, political freedom, and democracy influenced the further development of the theory of democracy, stimulating the search for different models of decision-making and the formation of political will without rational agreement. After all, the possibility of democracy lies in the conflict of ideas about justice and good. (shrink)

Fragmentalism is the view that reality is not a metaphysically unified place, but fragmented in a certain sense, and constituted by incompatible facts across such fragments. It was introduced by Kit Fine in a discussion of tense realist theories of time. Here I discuss the conceptual foundations of fragmentalism, identify several open questions in Fine’s characterization of the view, and propose an understanding of fragmentalism that addresses these open questions.

Fragmentalism allows incompatible facts to constitute reality in an absolute manner, provided that they fail to obtain together. In recent years, the view has been extensively discussed, with a focus on its formalisation in model-theoretic terms. This paper focuses on three formalisations: Lipman’s approach, the subvaluationist interpretation, and a novel view that has been so far overlooked. The aim of the paper is to explore the application of these formalisations to the alethic modal case. This logical exploration will (...) allow us to study (i) cases of metaphysical incompatibility between modal facts and (ii) cases of modal dialetheias. In turn, this will enrich our understanding of the role of impossibility in the fragmentalist framework. (shrink)

A central problem for any truthmaker theory is the problem of negative truths. In this paper, I develop a novel, piecemeal strategy for solving this problem. The strategy puts central focus on a truth-relevant notion of aboutness within a metaphysically modest version of truthmaker theory and uses key conceptual tools gained by taking a deeper look at the best attempts to solve the problem of intentionality. I begin this task by critically discussing past proposed solutions to P-NEG in light of (...) Russell’s debate with Demos. This reveals a central difficulty with addressing the problem, specifically that one cannot be committed to incompatibility facts in one’s account of negation and of the truth of negative truths. I then present an aboutness-based version of truthmaker theory. Utilising what I call the strict and full account of aboutness, I extract aboutness-based theories of truth and falsity. I use this machinery to present a promising new strategy for solving P-NEG which does not have the problems of alternative approaches. Finally, I present and respond to some potential objections. (shrink)

Objects often manifest themselves in incompatible ways across perspectives that are on a par. Phenomena of this kind have been responsible for crucial revisions to our conception of the world, both philosophical and scientific. The standard response to them is to deny that the way things appear from different perspectives are ways things really are out there, a response that is based on an implicit metaphysical assumption that the world is a unified whole. This dissertation explores the possibility that (...) this assumption is false, that the world is fragmented instead of unified. On the proposed understanding of such worldly fragmentation, there is a notion of co-obtainment according to which two facts may obtain without co-obtaining. Since not every fact that obtains also co-obtains with every other fact, two incompatible facts may both obtain, as long as they do not co-obtain in the introduced sense. The possibility of such fragmentation sheds new light on a range of phenomena. It allows us to explore a view of time that takes the notion of passage as its defining primitive. It bolsters a no-subject view of experience against the objection that it leads to solipsism. It allows a realist view about colours to withstand the objection from conflicting appearances. And, it makes room for a view on which things really have the properties that are attributed to objects and events across different frames of reference, such as length, mass, duration and simultaneity. Overall, fragmentalism changes the way in which the manifest image feeds into an objective conception of the world: what is manifest to us is not misleading in what sort of properties it shows the world to have, it's only misleading in making it seem more unified than it really is. (shrink)