En el cristianismo, un elemento se eleva por sobre los demás en su darse: la gracia, dación gratuita que Dios otorga a su criatura. Principalmente, la gracia se entiende y estudia como aquel don dado a la naturaleza de la criatura para su complementación o perfección. Sin embargo, el tema no encuentra su agotamiento ahí, pues la gracia también puede ser dispensada para la finalización de un designio intrahistórico, tal como narran los Evangelios.

In this paper, I link philosophical discussion of policies for trans inclusion or exclusion, to a method of policy making. I address the relationship between concerns about safety, fairness, and inclusion in policy making about the inclusion of transwomen athletes into women’s sport. I argue for an approach based on lexical priority rather than simple ‘balancing’, considering the different values in a specific order. I present justifying reasons for this approach and this lexical order, based on the special obligations of (...) International Federations such as World Rugby. As a result, I provide a justificatory framework for the WR Guidelines that exclude transwomen from the women’s game in WR competitions. Finally, I give an account of a maximally safe, maximally fair and maximally inclusive form of sex categorisation in sport. (shrink)

Modern philosophy recognizes two major ethical theories: deontology, which encourages adherence to rules and fulfillment of duties or obligations; and consequentialism, which evaluates morally significant actions strictly on the basis of their actual or anticipated outcomes. Both involve the systematic application of universal abstract principles, reflecting the culturally dominant paradigm of technical rationality. Professional societies promulgate codes of ethics with which engineers are expected to comply, while courts and the public generally assign liability to engineers primarily in accordance with the (...) results of their work, whether intended or unintended. A third option, prominent in ancient philosophy, has reemerged recently: virtue ethics, which recognizes that sensitivity to context and practical judgment are indispensable in particular concrete situations, and therefore rightly focuses on the person who acts, rather than the action itself. Beneficial character traits—i.e., virtues—are identified within a specific social practice in light of the internal goods that are unique to it. This paper proposes a comprehensive framework for implementing virtue ethics within engineering. (shrink)

In this paper I discuss a new conception that has arrived relatively recently on the scene, in the context of the debate over the inclusion of transwomen (hereafter TW) in female sport. That conception is ‘Meaningful Competition’ (hereafter MC) – a term used by some of those who advocate for the inclusion of TW in female sport if and only if they reduce their testosterone levels. I will argue that MC is not fair. I understand MC as a substitute concept, (...) as an attempt to substitute for the perfectly serviceable concept of fair competition. It is an attempt at conceptual engineering that should be resisted. This is important because some International Federations have accepted MC as good coin, and the underlying theory of MC, which I explicate for the first time, underpins the stance taken by the IOC (International Olympic Committee) in its Framework Document. To establish that the inclusion of TW in female sport meets the criteria of MC in the sense I explicate here, does not show that the inclusion of TW in female sport is fair. Such inclusion is not fair, and the proper currency of sport is fair competition. ‘Meaningful Competition’, on the other hand, is a snare and a delusion. (shrink)

The study of intrapersonal economic relations, or economics , is still at the programmatic stage. There is no generally accepted paradigm, or even as well-defined set of problems that constitute it as a subdiscipline within economics. Some questions are, however, emerging as foci of interest for a small but increasing number of writers, not just in economics, but also in psychology and philosophy. The writings of Thomas Schelling on self-management, of George Ainslie on self-control, and of Derik Parfit on personal (...) identity testify to this convergence. (shrink)

Peirce is best known as the founder of pragmatism, but his dissatisfaction with how others understood and appropriated it prompted him to rename his own doctrine “pragmaticism” and to compose several variants of his original maxim defining it, as well as numerous restatements and elaborations. This paper presents an extensive selection of such formulations, followed by analysis and commentary demonstrating that for Peirce the ultimate meaning of an intellectual concept is properly expressed as a conditional proposition about the deliberate, self-controlled (...) conduct of its interpreters, not the law-governed behavior of its object. (shrink)

Professionalism requires that physicians uphold the best interests of patients while simultaneously insuring just use of health care resources. Current articulations of these obligations like the American Board of Internal Medicine Foundation's Physician Charter do not reconcile how these obligations fit together when they conflict. This is the problem of dual agency. The most common ways of dealing with dual agency: “bunkering”—physicians act as though societal cost issues are not their problem; “bailing”—physicians assume that they are merely agents of society (...) and deliver care typically based on a strongly consequentialist public health ethic; or “balancing”—a vaguely specified attempt to uphold both patient welfare and societal need for judicious resource use simultaneously—all fail. Here I propose how the problem of dual agency might begin to be addressed with rigor and consistency. Without dealing with the dual agency problem and getting more specific about how to reconcile its norms when they conflict, the expectations of professionalism risk being written off as cute, nonbinding aphorisms from the medical profession. (shrink)

The term “virtual reality” was first coined by Antonin Artaud to describe a value-adding characteristic of certain types of theatrical performances. The expression has more recently come to refer to a broad range of incipient digital technologies that many current philosophers regard as a serious threat to human autonomy and well-being. Their concerns, which are formulated most succinctly in “brain in a vat”-type thought experiments and in Robert Nozick's famous “experience machine” argument, reflect a fundamental misunderstanding of the way that (...) such technologies would probably have to work. They also considerably underestimate the positive contributions that virtual reality technologies could make to the growth of human knowledge. Here, we examine and critique Nozick's claim that no reasonable person would want to plug into his hypothetical experience machine in light of a broadly enactivist understanding of how future VR technologies might be expected to function. We then sketch out a tentative theory of the phenomenon of truth in fiction, in order to characterize some of the distinct epistemic opportunities that VR technologies promise to provide. (shrink)

‘Internalism’ is used in metaethics for a cluster of claims which bear a family resemblance. They tend to link, in some distinctive way—typically modal, mereological, or causal—different parts of the normative realm, or the normative and the psychological. The thesis of this paper is that much metaethical mischief has resulted from philosophers’ neglect of the distinction between two different features of such claims. The first is the modality of the entire claim. The second is the relation between the items specified (...) in the claim. In part one I explain this distinction and the problems neglecting it may cause. In part two I show that it has been neglected, and has caused those problems, at least with respect to one version of internalism. That is judgment internalism, which claims that moral beliefs are necessarily related to pro- or con-attitudes; e.g., that if you believe you ought to x you must have some motivation to x. The considerations standardly adduced in favor of judgment internalism support only a version which lacks the metaethical implications typically attributed to it, at least so far as anyone has shown. Proponents and opponents of judgment internalism fail to realize this because of their neglect of the modality/relation distinction. I illustrate by considering discussions of judgment internalism by Russ Shafer-Landau, Simon Blackburn, James Dreier, David Brink, and others. (shrink)

The Recursive Bayesian Net (RBN) formalism was originally developed for modelling nested causal relationships. In this paper we argue that the formalism can also be applied to modelling the hierarchical structure of mechanisms. The resulting network contains quantitative information about probabilities, as well as qualitative information about mechanistic structure and causal relations. Since information about probabilities, mechanisms and causal relations is vital for prediction, explanation and control respectively, an RBN can be applied to all these tasks. We show in particular (...) how a simple two-level RBN can be used to model a mechanism in cancer science. The higher level of our model contains variables at the clinical level, while the lower level maps the structure of the cell's mechanism for apoptosis. (shrink)

This paper examines corporate social responsibility in Japan today within the context of the paradigm of the moral unity of business. Under this paradigm, business is expected to operate under the same set of moral standards operative in other societal institutions. We suggest that a micro moral unity characterizes Japan—business activity is linked to that society’s moral values but only within carefully circumscribed communities of interest. Because of the strains brought on by the maturing of the Japanese economy, the negative (...) consequences of this micro moral unity are now becoming apparent. A new paradigm will be required to address thesechallenges. A possible foundation for such a paradigm, based on the emerging notion of kyosei (living and working together for the common good), is discussed. (shrink)

This article uses concepts from sociology, history, and philosophy to explore the shifting relationship between moral values and business in the Western world. We examine the historical roots and intellectual underpinnings of two major business-society paradigms in ideal-type terms. In pre-industrial Western society, we argue that business activity was linked to society’s values of morality (the moral unity paradigm}-for good or for ill. With the rise of industrialism, we contend that business was freed from moral constraints by the alleged “invisible (...) hand” of efficient markets (the amoral theory of business). Armed with this understanding of the intellectual history of the moral unity and amoral business-society paradigms, we suggest that some variant of the moral unity paradigm may be recurring in post-industrial society. (shrink)

Charles Sanders Peirce is best known as the founder of pragmatism, but the name that he preferred for his overall system of thought was ‘‘synechism’’ because the principle of continuity was its central thesis. He considered time to be the paradigmatic example and often wrote about its various aspects while discussing other topics. This essay draws from many of those widely scattered texts to formulate a distinctively Peircean philosophy of time, incorporating extensive quotations into a comprehensive and coherent synthesis. Time (...) is not an existential subject with past, present, and future as its incompatible predicates, but rather a real law enabling things to possess contrary qualities at its different determinations, and Peirce identifies four classes of such states based on when and how they are realized. Because time is continuous, it is not composed of instants, and even the present is an indefinite lapse during which we are directly aware of constant change. The accomplished past is perpetually growing as the possibilities and conditional necessities of the future are actualized at the present, and the entire universe evolves from being utterly indeterminate toward being absolutely determinate. Nevertheless, time must return into itself even if events are limited to only a portion of it, a paradox that is resolved with the aid of projective geometry. Temporal synechism thus touches on a broad spectrum of philosophical issues including mathematics, phenomenology, logic, and metaphysics. (shrink)

The orthodox view in statistics has it that frequentism and Bayesianism are diametrically opposed—two totally incompatible takes on the problem of statistical inference. This paper argues to the contrary that the two approaches are complementary and need to mesh if probabilistic reasoning is to be carried out correctly.

This chapter first outlines some of Foucault' s conceptualizations of forms of power, focusing on discipline and biopower. The first section explores the extent to which Foucault understood modern power relations to be constraining limits, inhospitable to freedom. The second section focuses on some of Foucault's general conceptualizations rather than specific historical analyses of power and resistance. The third section follows Foucault's conceptualization of power relations as more expansive and complex than domination. In the final section Foucault's affirmative conceptualization of (...) power relations in the forms of liberty and freedom, not only resistance, comes to light. The section argues that Foucault's theorization and practice of resistance and liberty illustrate that, under contemporary conditions, resistance is the most viable way to practice freedom. Most of Foucault's work on ethical concern for the self focuses on the Classical Greek and Hellenistic eras, as Greek ethics turns power relations on the self. (shrink)

Although Peirce frequently insisted that continuity was a core component of his philosophical thought, his conception of it evolved considerably during his lifetime, culminating in a theory grounded primarily in topical geometry. Two manuscripts, one of which has never before been published, reveal that his formulation of this approach was both earlier and more thorough than most scholars seem to have realized. Combining these and other relevant texts with the better-known passages highlights a key ontological distinction: a collection is bottom-up, (...) such that the parts are real and the whole is an ens rationis, while a continuum is top-down, such that the whole is real and the parts are entia rationis. Accordingly, five properties are jointly necessary and sufficient for Peirce’s topical continuum: rationality, divisibility, homogeneity, contiguity, and inexhaustibility. (shrink)

Principlism is simple. Four intuitive ideas, creating order out of moral chaos, at least categorizing considerations for better deliberation over right and wrong, good and bad, in a modern, plurali...

Literature and Understanding investigates the cognitive gain from literature by focussing on a reader's close analysis of a literary text. It examines the meaning of 'literature', outlines the most prominent positions in the literary cognitivism debate, explores the practice of close reading from a philosophical perspective, provides a fresh account of what we mean by 'understanding' and in so doing opens up a new area of research in the philosophy of literature. This book provides a different reply to the challenge (...) that we can't learn anything worthwhile from reading literary fiction. It makes the innovative case that reading literary fiction as literature rather than as fiction stimulates five relevant senses of understanding. The book uses examples of irony, metaphor, play with perspective and ambiguity to illustrate this contention. Before arguing that these five senses of understanding bridge the gap between our understanding of a literary text and our understanding of the world beyond that text. The book will be of great interest for researchers, scholars and post-graduate students in the fields of aesthetics, literary theory, literature in education and pedagogy. (shrink)

A traditional ethic of medicine asserts that physicians have special obligations to individual patients with whom they have a clinical relationship. Contemporary trends in US healthcare financing like bundled payments seem to threaten traditional conceptions of special obligations of individual physicians to individual patients because their population-based focus sets a tone that seems to emphasise responsibilities for groups of patients by groups of physicians in an organisation. Prior to undertaking a cogent debate about the fate and normative weight of special (...) obligations and a traditional ethic for contemporary healthcare, we need a deeper examination of what the traditional ethic of special obligations really means. Here we offer a conception of ‘doubly distributed’ special obligations. Physicians and similarly minded healing professionals abiding by a traditional ethic have always spread their devotion and attention across multiple patients and have shared responsibilities with physician and non-physician colleagues in much the same way devoted parents have frequently distributed their special obligations across multiple children and across multiple parents. By taking up the extended analogy of parent we argue that doubly distributing special obligations need not contradict the possibility of special obligations in restructured collective forms of healthcare delivery and financing. (shrink)

Important discussions about limiting care based on professional judgment often devolve into heated debates over the place of physicians in bedside rationing. Politics, loaded rhetoric, and ideological caricature from both sides of the rationing debate obscure precise points of disagreement and consensus, and hinder critical dialogue around the obligations and boundaries of professional practice. We propose a way forward by reframing the rationing conversation, distinguishing between the scale of the decision and its context avoiding the word “rationing.” We propose to (...) shift the terminology, using specific, descriptive words to defuse conflict and re-focus the debate towards substantive issues. These distinctions can clarify the real ethical differences at stake and facilitate a more constructive conversation about the clinical and social responsibilities of physicians to use resources ethically at the bedside and their role in allocating medical resources at a societal level. (shrink)

Without taking a position on the overall justification of anti-doping regulations, I analyse the possible justification of Therapeutic Use Exemptions from such rules. TUEs are a creative way to prevent the unfair exclusion of athletes with a chronic condition, and they have the potential to be the least bad option. But they cannot be competitively neutral. Their justification must rest, instead, on the relevance of intentions to permissibility. I illustrate this by means of a set of thought experiments in which (...) only an athlete’s intentions vary. I argue that the Doctrine of Double Effect sheds some light on TUEs and illustrate this by applying different readings of the DDE to the thought experiment. This underpins a justification of anti-doping exemptions very different from the approach adopted by the World Anti-Doping Agency. I argue for three changes to bring TUEs in line with this understanding: rewriting of the regulations, transparency, and a greater role for athletes in determining what exemptions are allowed, and when. (shrink)

A traditional ethic of medicine asserts that physicians have special obligations to individual patients with whom they have a clinical relationship. Contemporary trends in US healthcare financing like bundled payments seem to threaten traditional conceptions of special obligations of individual physicians to individual patients because their population-based focus sets a tone that seems to emphasise responsibilities for groups of patients by groups of physicians in an organisation. Prior to undertaking a cogent debate about the fate and normative weight of special (...) obligations and a traditional ethic for contemporary healthcare, we need a deeper examination of what the traditional ethic of special obligations really means. Here we offer a conception of ‘doubly distributed’ special obligations. Physicians and similarly minded healing professionals abiding by a traditional ethic have always spread their devotion and attention across multiple patients and have shared responsibilities with physician and non-physician colleagues in much the same way devoted parents have frequently distributed their special obligations across multiple children and across multiple parents. By taking up the extended analogy of parent we argue that doubly distributing special obligations need not contradict the possibility of special obligations in restructured collective forms of healthcare delivery and financing. (shrink)

In this article, I argue that the later Wittgenstein’s related conclusions regarding the importance of a non-theoretical understanding of human behaviour and the essentially therapeutic function of philosophy can be arrived at without subscribing either to the position that description and explanation are necessarily distinct activities or the idea that language is an inherently rule-based activity operating within determinate conceptual-cultural regimes. I aim to do so by bringing together two figures, A.R. Louch and Roy Harris, both of whom stand within (...) a post-Wittgensteinian tradition, but whose kindred yet hitherto unconnected departures from the orthodoxy of that tradition render their work not only distinctive but all the more compelling for it. I shall try to exhibit the affinity between Louch and Harris by means of an expository discussion of the former’s thesis regarding the role and form of explanation in the social and behavioural sciences, followed by an account of explanation in linguistic inquiry consistent with the latter’s ‘integrationist’ philosophy of language and communication. I will also claim that the thought of both Louch and Harris points towards a form of atheoretical empiricism in the investigation of human action, as well as a broadly therapeutic conception of philosophical and linguistic inquiry respectively. However, I will suggest that such a conception is not necessarily best served by the adoption of an overtly therapeutic rhetoric. (shrink)

In the last chapter of The Public and its Problems John Dewey outlines the alleged fallacy of "the democratic creed". According to him the fallacy is described as conflating emancipation with the capacity to rule, i.e. the capacity to make policy decisions. His point is that the power to make decisions does not entail a capacity to make good choices. Capable are those in the know, the experts who are "intellectually qualified". The answer to the fallacy is to propose epistocracy: (...) The rule of experts – as Walter Lippman had come close to arguing. But Dewey tries to refute the argument for epistocracy. He rehearses the old platonic wisdom that the harmonious state... (shrink)

In this paper, we reply to Eric Moore’s argument that Lance Armstrong did not cheat, at least according to one, standard account of cheating. If that is the case, we argue, so much the worse for th...

A supertask is a process in which an infinite number of individuated actions are performed in a finite time. A Newtonian supertask is one that obeys Newton''s laws of motion. Such supertasks can violate energy and momentum conservation and can exhibit indeterministic behavior. Perez Laraudogoitia, who proposed several Newtonian supertasks, uses a local, i.e., particle-by-particle, analysis to obtain these and other paradoxical properties of Newtonian supertasks. Alper and Bridger use a global analysis, embedding the system of particles in a Banach (...) space, to determine the origin of the strange behavior. This paper provides a common framework for the discussion of both the local and global methods of analysis. Using this single framework, the areas of disagreement and agreement are made explicit. Further examples of supertasks are proposed to illuminate various aspects of the discussion. (shrink)

Charles Peirce developed Existential Graphs as a diagrammatic syntax for representing and reasoning about propositions, with three parts: Alpha for propositional logic, Beta for first-order predicate logic, and Gamma for aspects of modal logic, second-order logic, and metalanguage. He made several adjustments between 1909 and 1911 that merit further consideration: using heavy lines to denote possible states of things in which attached propositions would be true, drawing a red line just inside the edge of a page and writing postulates in (...) the resulting margin, shading oddly enclosed areas instead of drawing thin lines as their boundaries, and using multiple sheets of paper to represent different subjects within the overall universe of discourse. These modifications can be combined to constitute a plausible candidate for Delta, a fourth part that Peirce intended to add but never spelled out. It implements modern formal systems of modal propositional logic in accordance with a version of possible worlds semantics in which the laws for the actual state of things are facts in every possible state of things. (shrink)

Hamid Vahid criticizes Tyler Burge's account of perceptual entitlement. Vahid argues that Burge's account fails to satisfy a criterion of adequacy that any correct account of perceptual warrant must satisfy. According to Vahid, a correct account of perceptual warrant must allow for perceptual beliefs which are produced by a properly functioning perceptual system yet which lack warrant. The present article argues that Vahid's critique of Burge fails. It presents numerous examples of such beliefs that are consistent with Burge's account of (...) perceptual entitlement. (shrink)

The elaborated intrusion (EI) theory of desire (Kavanagh, Andrade, & May, 2005) attributes the motivational force of cravings to cognitive elaboration, including imagery, of apparently spontaneous thoughts that intrude into awareness. We report a questionnaire study in which respondents rated a craving for food or drink. Questionnaire items derived from EI theory formed a single factor alongside factors for anticipated reward/relief, resistance, and opportunity. In a multiple regression predicting strength of craving, the first three factors accounted for 36% of the (...) variance. Opportunity did not enter the model. In a second study, the difference between individuals' strong and weak cravings to take part in a sporting activity was shown to be related to visual, auditory, and general imagery, and to anticipated reward or relief from engaging in the activity. Implications for treatment of craving-related disorders are discussed in the light of these results and of other research indicating that interference with imagery can reduce the strength of craving. (shrink)

Evidence-based law seeks to make best use of evidence to assess the effectiveness of laws and regulations. The question arises as to how exactly to make best use of evidence. This paper argues that Evidential Pluralism provides an answer to this question and can thus provide philosophical foundations for evidence-based law. Evidential Pluralism is a theory of causal enquiry which maintains that one needs to scrutinise mechanistic studies alongside the experimental and observational studies that are the focus of present-day evidence-based (...) medicine and evidence-based policy. The paper develops a new approach to evidence-based law, called EBL+, based on the principles of Evidential Pluralism. Three examples show how the proposed methods work: banning hand-held mobile phone use while driving, sugar tax, and face-mask mandates for controlling Covid-19. (shrink)

Revisionists and traditionalists appeal to Acts 15, welcoming the Gentiles, for analogies directing the church's response to homosexual persons. John Perry has analyzed the major positions. He faults revisionists for inadequate attention to the Jerusalem Decree and faults one traditionalist for using the Decree literally rather than through analogy. I argue that analogical use of the Decree must supplement rather than displace the plain sense. The Decree has been neglected due to assumptions that Paul opposed it, that it expired, or (...) because Gentiles wanted non-kosher meat. I argue that Paul continued to observe the Torah and supported the Decree, that it has not expired, and that Gentile desire for non-kosher meat is not a firm obstacle. Affirming the plain sense of the Decree, I develop the analogy from Acts 15 to homosexual persons. (shrink)

How does one committed to the claims of Christ and a biblical story of redemption live Christianly and navigate the competing worldviews encountered in everyday medical practice? Adopting the practical conceptual framework promoted by Reformed Christian philosopher and theologian Albert Wolters, we argue for an all-encompassing biblical understanding of God’s cosmic redemption plan for the entire creation order in contrast to a more typical sacred/secular duality. We then apply the concepts of structure and direction, drawn from a pretheological understanding of (...) human life drawn from the Scripture, to a semi-fictional case study in discerning Christian faithfulness in everyday mundane aspects of medicine. Our subsequent analysis seeks to render an interpretation of what it means to live life consistent with that worldview when confronted with challenges like those presented in the case. (shrink)

This paper challenges the view that academic professionalism resides in the professional 'autonomy ' of the academic, the 'self-regulation' of academics as an occupational group, and the differential 'status' of academic workers. This still influential notion of academic professionalism, it is argued, leads to institutional stasis. What is required is greater reflexivity by academics in respect of their underlying professional values. In particular the piece challenges the academic community to re-think academic freedom - the bedrock of professional identity within that (...) community - in terms of increased inclusivity: 'freedom for all' rather than 'freedom for academics'. The paper touches on issues relating to practice and organisational structure, but focuses primarily on the need for academics to shift the moral bases of their claim to professionalism. In so doing, it also challenges the post-Dearing consensus that the debate on academic professionalism can be adequately conducted in terms of 'standards' and 'outcomes'. A prime purpose of the paper is to promote debate and discussion by setting a different kind of agenda and by couching that agenda within a different kind of discourse. (shrink)

This article argues that the concept of evil is needed in normative ethics in general as well as in the professional ethics of social work. Attention is drawn to certain shortcomings in the classical theories of normative ethics when it comes to recognizing the profound destructiveness of certain types of acts that exceed the mere ?bad? or ?wrong? applied in the most common theories of moral philosophy. Having established the category of morally evil acts in general, the author turns to (...) the field of social work and applies it to some paradigm cases of evil that many social workers are likely to be confronted with during the course of their service. In the final part of the article, the concept of moral evil is discussed in relation to the professional ethics of social work in general, with reference to certain value assumptions that are found to be inherent to social work. (shrink)

Theoretical questions concerning language and communication figure prominently throughout the work of the Czech-British social philosopher and anthropologist Ernest Gellner. The article traces the development of Gellner’s linguistic thought from his early, controversial engagements with Ordinary Language Philosophy to his responses to Chomsky’s work in linguistics and his late-career assessments of Wittgenstein and particularly Malinowski whose – subsequently repudiated – view of the fundamental difference between the alleged “primitive” and “scientific” functions of language turns out to play a central explanatory (...) role in Gellner’s renowned theory of nationalism. The key to understanding Gellner’s thinking on language is to grasp both his adherence to a “telementational” model of communication and his scientism. This leads him to embrace the view that modern national cultures are predicated upon an industrial-scientific mode of cognition which both requires and entails a radically distinctive metaphysics of communication, namely one which allows for the conveyance of culture-transcending, “context-free” conceptual content. This, I claim, is a serious error which stems in large part from a misdiagnosis of the cognitive and communicative consequences of literacy and in particular a failure to correctly apprehend what linguist Roy Harris has termed the “autoglottic space” engendered by the availability of writing. (shrink)

Although modern modal logic came about largely after Peirce's death, he anticipated some of its key aspects, including strict implication and possible worlds semantics. He developed the Gamma part of Existential Graphs with broken cuts signifying possible falsity, but later identified the need for a Delta part without ever spelling out exactly what he had in mind. An entry in his personal Logic Notebook is a plausible candidate, with heavy lines representing possible states of things where propositions denoted by attached (...) letters would be true, rather than individual subjects to which predicates denoted by attached names are attributed as in the Beta part. New transformation rules implement various commonly employed formal systems of modal logic, which are readily interpreted by defining a possible world as one in which all the relevant laws for the actual world are facts, each world being partially but accurately and adequately described by a closed and consistent model set of propositions. In accordance with pragmaticism, the relevant laws for the actual world are represented as strict implications with real possibilities as their antecedents and conditional necessities as their consequents, corresponding to material implications in every possible world. (shrink)