In lieu of an abstract, here is a brief excerpt of the content:ON BEING OR NOT BEING A THOMIST ROBERT E. LAti'DER St. John's University Jamaica, New York Nineteenth-Century Scholasticism: The Search for a Unitary Method. Gerald A. McCool, S.J. New York: Fordham University Press, 1989. 301 pages (paper). From Unity to Pluralism: The Internal Evolution of Thomism. Gerald A. McCool, S.J. New York: Fordham University Press, 1989. 9248 pages (hardcover). BEFORE I READ Gerald A. McCool's two volumes examining (...) nineteenth and twentieth centrury scholast :i:cism and Thomism, if someone had asked my philosophica ;l o:rientation, I would have replied "I am a Thomist." Having rerud McCool's two books, I still and with a strong sense of gratitude articulate my philosophical self-des,ignation as Thomisit, but what I mean by Thomist has become considerably more nuanced. Not only those who identify themselvies with the thought of St. Thomas but a, wider philosophical and theologiea1l community shou1d be grateful to Father McCool for- his eXiceHent scholarly contribution to the understanding of sicholasticism and Thomism. His two volumes show many of us who call ourselves Thomists where we have been an:d wheve we rare and, by illuminating our past,and present, clarify for us our options for the future. Nineteenth-Century Scholasticism was first published under,the title Catholic Theology in the Nineteenth Century by The Seabury Press in 1977, but it has been re-issued hy Fordham University to ruocompany the appearance of his second volume. In this earlier work McCool ohal'ts in detail the growth and 301 30~ ROBERT E. LAUDER d.wection of scholasticism, especially in relation to two influential Chmich documents: the Apostolic Consititu.tion on Faith Dei Filius, solemnly app:rovced in 1870 by the fathers of the First Vatican Council, and Leo XIII's 1879 encyclical Aeterni Patris. The,earlier,document defined and darified the Church's teaching on the supernatural and free charac1te:r of faith and on the relation between supe:matural faith and natural reason; the encydical was a disciplinary document concerning the method of philosophicaJ instruction for priests. McCool \Stresses that the linking of the two documents in the minds of Roman authorities and theologians gave the documents enormous weight and influence during the nineteenth and well into the twentieth century, but now, more than a hundred years fater, their influence is being and r'easses:sed. Though the present situation in Catholic philosophical and theological circles is not a case history reversing itself, it is an extra011dina :ry example of history leruding to the l'eopening of questions ithat,seemed definitivdy dosed. McCool suggests that there are at ~east two factors affecting contemporary Catholic theology which indicate that ·current historical research into nineteenth-century Catholic theology may point to a genuine option between a deveJoped Thomism and a restored pre-Thomistic nineteenth century system: The first of these is the freedom given to Catholic theologians by the Second Vatican Council to experiment with non-Thomistic theological systems. Aetelf'ni Patris no longer enjoys the status of an irrevocable theological option, based on immutable dogmatic and metaphysical principles. Its theological signification has been relativized. Aeterni Patris must now be considered an historical moment in the dialectical progress of theological development. The second distinctive characteristic of contemporary theology is the current ferment over theological method. This means that the nineteenth-century debate, which the official option of Aetelf'ni Patris seemed to have closed definitively, has been reopened. The disciples of SL Thomas and the partisans of the ' new ' theologies are free once more to submit their diverse theological methods to the judgment of their fellow theologians. (p. 6) GERALD MC COOL AND THOMISM 303 McCool views Joseph Kleutgen as the outstanding representativ ;e of the noo-Thomisit.ic movement in the nineteenth century. Kleutgen was trying to strike a balance between the extremes of fideisim and rationalism. He felt strongly thrut if one says positive and speculative theology are nort intrinsically difforent in their intellootua;} questions from a philosophy of·l'leve!Imtion then either natural veason's proper autonomy has to be compromised by a tmditional :fideism or the distinctiveness and gra.tuity of supernatuml knowledge has to be blurred by... (shrink)

Doing Greek Philosophy conveys a vivid sense of dynamism and continuity of the Greek philosophical tradition and illustrates how interaction between Greek philosophers creates and sustains that tradition. It concentrates on a set of inter-related challenges and problems that emerged early in the tradition and moves on to the subsequent reactions to them.

Drawing on a passage from Ramsey's Truth and Probability, we formulate a simple, plausible constraint on evaluating the accuracy of credences: the Calibration Test. We show that any additive, continuous accuracy measure that passes the Calibration Test will be strictly proper. Strictly proper accuracy measures are known to support the touchstone results of accuracy-first epistemology, for example vindications of probabilism and conditionalization. We show that our use of Calibration is an improvement on previous such appeals by showing how it answers (...) or sidesteps problems that have been raised for previous work in this area. (shrink)

Der Wandel der kulturellen Verhältnisse führt zu einer Zuspitzung des Verhältnisses von Gesellschaft und Rechtssystem. In diesem Prozess gestaltet New Political Ecology (NPE) Umwelt und Rechtssystem und ist zugleich evolutiv ausgerichtet. NPE erfährt Evolution in der Zeit als Überfluss und in eigenartiger Vernetzung als knappes Gut. Diese Verbindung basiert auf Zusammenhängen, die bisher noch nicht systematisch bearbeitet worden sind. Dabei geht es ganz wesentlich auch um das Verhältnis von Staat und moderner Risikogesellschaft. Wissenschaftlicher Fortschritt erweist sich vor diesem Hintergrund selbst (...) als ein evolutiver Prozess. (shrink)

In the good old days, when general philosophy of science ruled the Earth, a simple division was often invoked to talk about philosophical issues specific to particular kinds of science: that between the natural sciences and the social sciences. Over the last 20 years, philosophical studies shaped around this dichotomy have given way to those organized by more fine-grained categories, corresponding to specific disciplines, as the literatures on the philosophy of physics, biology, economics and psychology--to take the most prominent four (...) examples--have blossomed. In general terms, work in each of these areas has become increasingly enmeshed with that in the corresponding science itself, increasingly naturalistic (in at least one sense of that term), and in my view, increasingly interesting. (shrink)

Utilitarianism, the great reforming philosophy of the nineteenth century, has today acquired the reputation for being a crassly calculating, impersonal philosophy unfit to serve as a guide to moral conduct. Yet what may disqualify utilitarianism as a personal philosophy makes it an eminently suitable guide for public officials in the pursuit of their professional responsibilities. Robert E. Goodin, a philosopher with many books on political theory, public policy and applied ethics to his credit, defends utilitarianism against its critics and (...) shows how it can be applied most effectively over a wide range of public policies. In discussions of such issues as paternalism, social welfare policy, international ethics, nuclear armaments, and international responses to the environment crisis, he demonstrates what a flexible tool his brand of utilitarianism can be in confronting the dilemmas of public policy in the real world. (shrink)

Se resume en esta obra el vasto y complejo sistema teórico-jurídico de Hans Kelsen, el jurista más grande de nuestro siglo. La doctrina de Kelsen y en particular su Teoría Pura del Derecho han conocido muchas vicisitudes y ataques debidos más a prejuicios políticos y racistas que a una verdadera confrontación con sus tesis. El autor enfatiza en el hecho de que la doctrina jurídica de Kelsen no es una teoría terminada y archivada sino en permanente desarrollo, una teoría a (...) cuya ulterior construcción están convocados todos los juristas. (shrink)

Fourteen new essays by a distinguished team of authors offer a broad and stimulating re-examination of transcendental arguments. This is the philosophical method of arguing that what is doubted or denied by the opponent must be the case, as a condition for the possibility of experience, language, or thought.The line-up of contributors features leading figures in the field from both sides of the Atlantic; they discuss the nature of transcendental arguments, and consider their role and value. In particular, they consider (...) how successful such arguments are as a response to sceptical problems. The editor's introduction provides historical context and philosophical orientation for the discussions. This is the first major appraisal of transcendental arguments since the 1970s; they have continued to play a significant role in philosophy, and recent developments in epistemology and metaphysics have raised new questions and challenges for them. Transcendental Arguments will be essential reading for anyone interested in this area of philosophy, and the starting-point for future work. (shrink)

The standard view of academic freedom and free speech is that they play complementary roles in universities. Academic freedom protects academic discourse, while other public discourse in universities is protected by free speech. Here I challenge this view, broadly, on the grounds that free speech in universities sometimes undermines academic practices. One defense of the standard view, in the face of this worry, says that campus free speech actually furthers the university’s academic aims. Another says that universities have a secondary (...) democratic function, which cannot be fulfilled without free speech on campus. I identify shortcomings in both types of arguments. (shrink)

This essay assesses the rationale for regulating research administrators as carefully as they regulate researchers. The reasons for such regulation are identical: protecting scientific integrity, ensuring responsible use of public funds, addressing the lack of effective recourse for victims, creating negative consequences for misbehaving actors, and addressing high incentives for misconduct. Whereas the reasons compelling us to regulate research administrators are obvious, counterarguments to administrative oversight are based on suggestions that the incidence and prevalence of cases of administrative misconduct are (...) too low to warrant formal regulation. I briefly describe examples of the phenomenon drawn from publicly available records. My analysis suggests that the misconduct of research administrators is both serious and worthy of better oversight. Improved oversight of research administration will help steward tax dollars appropriately and enhance the overall integrity of the scientific record and of the free pursuit of knowledge more generally. (shrink)

McGowan argues that everyday verbal bigotry makes a key contribution to the harms of discriminatory inequality, via a mechanism that she calls sneaky norm enactment. Part of her account involves showing that the characteristic of conversational interaction that facilitates sneaky norm enactment is in fact a generic one, which obtains in a wide range of activities, namely, the property of having conventions of appropriateness. I argue that her account will be better-able to show that everyday verbal bigotry is a key (...) factor in social inequality if it tries to isolate a more specific property of conversation as the thing that facilitates sneaky norm enactment. (shrink)

This work is a brief yet comprehensive introduction to the thought-provoking field of business ethics. It is organized into three parts that cover the role of business in society, the ethics of internal management, and the challenges of international business.

J. Willard Gibbs derived the following equation to quantify the maximum work possible for a chemical reaction$${\text{Maximum work }} = \, - \Delta {\text{G}}_{{{\text{rxn}}}} = \, - \left( {\Delta {\text{H}}_{{{\text{rxn}}}} {-}{\text{ T}}\Delta {\text{S}}_{{{\text{rxn}}}} } \right) {\text{ constant T}},{\text{P}}$$ Maximum work = - Δ G rxn = - Δ H rxn - T Δ S rxn constant T, P ∆Hrxn is the enthalpy change of reaction as measured in a reaction calorimeter and ∆Grxn the change in Gibbs energy as measured, if (...) feasible, in an electrochemical cell by the voltage across the two half-cells. To Gibbs, reaction spontaneity corresponds to negative values of ∆Grxn. But what is T∆Srxn, absolute temperature times the change in entropy? Gibbs stated that this term quantifies the heating/cooling required to maintain constant temperature in an electrochemical cell. Seeking a deeper explanation than this, one involving the behaviors of atoms and molecules that cause these thermodynamic phenomena, I employed an “atoms first” approach to decipher the physical underpinning of T∆Srxn and, in so doing, developed the hypothesis that this term quantifies the change in “structural energy” of the system during a chemical reaction. This hypothesis now challenges me to similarly explain the physical underpinning of the Gibbs–Helmholtz equation$${\text{d}}\left( {\Delta {\text{G}}_{{{\text{rxn}}}} } \right)/{\text{dT}} = - \Delta {\text{S}}_{{{\text{rxn}}}} \left( {\text{constant P}} \right)$$ d Δ G rxn / dT = - Δ S rxn constant P While this equation illustrates a relationship between ∆Grxn and ∆Srxn, I don’t understand how this is so, especially since orbital electron energies that I hypothesize are responsible for ∆Grxn are not directly involved in the entropy determination of atoms and molecules that are responsible for ∆Srxn. I write this paper to both share my progress and also to seek help from any who can clarify this for me. (shrink)

Heavy duty platonism is of great dialectical importance in the philosophy of mathematics. It is the view that physical magnitudes, such as mass and temperature, are cases of physical objects being related to numbers. Many theorists have assumed HDP’s falsity in order to reach their own conclusions, but they are only justified in doing so if there are good arguments against HDP. In this paper, I present all five arguments against HDP alluded to in the literature and show that they (...) all fail. In doing so, I establish two related truths: HDP has been unfairly ignored, and the arguments which take its falsity as a key premise should be re-assessed. (shrink)

Robert Alexy develops his influential theory of legal reasoning exploring the nature of legal argumentation and its relation to practical reasoning. In doing so he sheds light on fundamental questions of law and rationality, which are as crucial to practising lawyers and law students as they are to scholars of legal theory.

The ‘indispensability argument’ for the existence of mathematical objects appeals to the role mathematics plays in science. In a series of publications, Joseph Melia has offered a distinctive reply to the indispensability argument. The purpose of this paper is to clarify Melia’s response to the indispensability argument and to advise Melia and his critics on how best to carry forward the debate. We will begin by presenting Melia’s response and diagnosing some recent misunderstandings of it. Then we will discuss four (...) avenues for replying to Melia. We will argue that the three replies pursued in the literature so far are unpromising. We will then propose one new reply that is much more powerful, and—in the light of this—advise participants in the debate where to focus their energies. (shrink)

The alphabet effect that showed that codified law, alphabetic writing, monotheism, abstract science and deductive logic are interlinked, first proposed by McLuhan and Logan, is revisited. Marshall and Eric McLuhan’s insight that alphabetic writing led to the separation of figure and ground and their interplay, as well as the emergence of visual space, are reviewed and shown to be two additional effects of the alphabet. We then identify more additional new components of the alphabet effect by demonstrating that alphabetic writing (...) also gave rise to Duality, and reductionism or the linear sequential relationship of causes followed by effects. We then review McLuhan’s claim that electrically configured information reversed the dominance of visual space over acoustic space and led to the reversals of cause and effect, and figure and ground. We then demonstrate that General System Theory first formulated by Ludwig von Bertalanffy, which also includes chaos theory, complexity theory and emergence and Jakob von Uexküll’s notion of umwelt also entail the reversal of many aspects of the alphabet effect such as the reversals of cause and effect, and figure and ground. (shrink)

Nozick argues, in “Anarchy, State, and Utopia”, correctly I think, that we can go from an equal distribution of wealth to an unequal one through just means. Nozick then asks: If people voluntarily move from a just distribution of wealth, D1, to a different distribution, D2, “isn’t D2 also just?” While Nozick thinks the new distribution of wealth, D2, is just, I think that it is at least possible to go from a just state of affairs to an un-just state (...) of affairs by just means. I then argue that any unequal distribution of wealth can not maximize the good derived from wealth. Therefore, on the basis of plausible utilitarian ideas, any distribution of wealth that isn’t at least roughly equal is un-just, even it was arrived at by just means from aa equal and just distribution of wealth. (shrink)

At the heart of this book is the age-old question of how law and morality are related. The legal positivist, insisting on the separation of the two, explicates the concept of law independently of morality. The author challenges this view, arguing that there are, first, conceptually necessary connections between law and morality and, second, normative reasons for including moral elements in the concept of law. While the conceptual argument alone is too limited to establish a sufficiently strong connection between law (...) and morality, and the normative argument alone fails to address the nature of law, the two arguments together support a nonpositivistic concept of law, toppling legal positivism qua comprehensive theory of law. (shrink)

Studies the books of Spinoza to clarify some of his central ideas on man, society, and government.

This book analyses the general structure of constitutional rights reasoning under the German Basic Law. It deals with a wide range of problems common to all systems of constitutional rights review. In an extended introduction the translator argues for its applicability to the British Constitution, with particular reference to the Human Rights Act 1998.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain (...) in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

This book addresses three major questions about law and legal systems: (1) What are the defining and organizing forms of legal institutions, legal rules, interpretive methodologies, and other legal phenomena? (2) How does frontal and systematic focus on these forms advance understanding of such phenomena? (3) What credit should the functions of forms have when such phenomena serve policy and related purposes, rule of law values, and fundamental political values such as democracy, liberty, and justice? This is the first book (...) that seeks to offer general answers to these questions and thus gives form in the law its due. The answers not only provide articulate conversancy with the subject but also reveal insights into the nature of law itself, the oldest and foremost problem in legal theory and allied subjects. (shrink)

INTRODUCTION: REASON AND THE PASSIONS i. Philosophy? This same philosophy is a good horse in the stable, but an arrant jade on a journey. ...

‘The following sentence is true only if numbers exist: The number of planets is eight. It is true; hence, numbers exist.’ So runs a familiar argument for realism about mathematical objects. But this argument relies on a controversial semantic thesis: that ‘The number of planets’ and ‘eight’ are singular terms standing for the number eight, and the copula expresses identity. This is the ‘Fregean analysis’.I show that the Fregean analysis is false by providing an analysis of sentences such as that (...) best explains the available linguistic data, and according to which no terms in purport to stand for numbers. (shrink)

We study a canonical modal logic introduced by Lemmon, and axiomatised by an infinite sequence of axioms generalising McKinsey’s formula. We prove that the class of all frames for this logic is not closed under elementary equivalence, and so is non-elementary. We also show that any axiomatisation of the logic involves infinitely many non-canonical formulas.

In lieu of an abstract, here is a brief excerpt of the content:Preface: Virtual Entities in ScienceRobert Harlander, Jean-Philippe Martinez, Friedrich Steinle, and Adrian WüthrichIt is not only since the sudden increase of online communication due to the COVID-19 situation that the concept of the “virtual” has made its way into everyday language. In this context, it mostly denotes a digital substitute for a real object or process. Virtual reality is perhaps the best-known term in this respect. With these digital (...) connotations, “virtuality” has also been used in science and research: Chemists use virtual laboratories, biologists do virtual scanning of molecular structures, and geologists engage in virtual field trips. But the concept of the virtual has a much longer tradition, dating back to long before the dawn of the digital age. Virtual images and virtual displacements were introduced in classical physics already in the late seventeenth and eighteenth centuries, respectively. They represent auxiliary objects or processes without instantiation, with the purpose of efficiently describing specific physical systems. In today’s physics, the term “virtual” is mostly associated with the quantum world, first and foremost with the “virtual particle” of quantum field theory. It has become such an integral part of modern high energy physics that its ontological character may be considered to go beyond the purely auxiliary, which is typically associated with the virtual. [End Page 263]In other disciplines, however, use of the term virtual without a digital connotation is much rarer. While concepts like “virtual adrenaline” show up in physiological research around 1940s, and Charles Darwin, in a private note in January 1840,1 spoke of “virtual change” in the context of embryology, these examples seem to be singular occurrences of entities that were explicitly called “virtual.” The basic idea behind the terminology of the virtual, however, might be much more common, even outside of physics. The “invisible hand” in economics, or the “vital force” in biology, for instance, may carry aspects of a virtual entity, even if they have not been referred to that way.These different observations raise several questions about the status of virtual entities in science. What has led scientists to call one entity “virtual” and not another? Do all virtual entities in science have the same roots and meet the same characteristics? Are they more than auxiliary objects or processes? Why does physics seem to occupy a specific position with respect to the use of the notion of virtuality? These are some points that led us to discuss virtual entities in science during a workshop, out of which grew the present collection. We invited contributions that addressed the historical formation and philosophical interpretation of concepts of virtual entities in physics and other disciplines—in whatever terms they may come. The main goal of the workshop was to bring to the fore similarities and differences in the meanings and functions of these concepts, so as to be able to precisely characterize why certain entities are considered virtual in specific contexts, why a different terminology was often used in each individual case, and in what sense the virtual entities relate to the real world.The organization of the workshop was part of our project “The formation and development of the concept of virtual particles,” a subproject of the Research Unit “The Epistemology of the Large Hadron Collider,” funded by the Deutsche Forschungsgemeinschaft (DFG) and Der Wissenschaftsfonds (FWF). The workshop took place online on four consecutive Fridays in March 2021. It brought together contributors who discussed the role of the concept of the virtual in theoretical as well as experimental activities, and investigated into the origins of the terminology of the virtual as it was applied to the various disciplines of natural science. Dealing with historical, philosophical, but also methodological questions, the presentations covered a wide time range, from the Middle Ages to the present day. While physics naturally emerged as the dominant field, natural philosophy, computer science and biology were also addressed. The papers in this volume were contributed by participants in this workshop and approach the subject from different angles. [End Page 264]First, Friedrich Steinle provides us with an introductory piece that reflects on the specific meaning of the use of the term ‘virtual’ in science. He highlights and... (shrink)

Robert Stalnaker opposes the traditional view that knowledge of one's own current thoughts and feelings is the unproblematic foundation for all knowledge. He argues that we can understand our knowledge of our thoughts and feelings only by viewing ourselves from the outside, by seeing our inner lives as features of the world as it is in itself.

Where does the mind begin and end? Most philosophers and cognitive scientists take the view that the mind is bounded by the skull or skin of the individual. Robert Wilson, in this provocative and challenging 2004 book, provides the foundations for the view that the mind extends beyond the boundary of the individual. The approach adopted offers a unique blend of traditional philosophical analysis, cognitive science, and the history of psychology and the human sciences. The companion volume, Genes and (...) the Agents of Life, explores the theme in the biological sciences. Written with verve and clarity, this ambitious book will appeal to a broad swathe of professionals and students in philosophy, psychology, cognitive science, and the history of the behavioural and human sciences. You can download the table of contents here. (shrink)

In Overdoing Democracy, Robert B. Talisse turns the popular adage "the cure for democracy's ills is more democracy" on its head. Indeed, he argues, the widely recognized, crisis-level polarization within contemporary democracy stems from the tendency among citizens to overdo democracy. When we make everything--even where we shop, the teams we cheer for, and the coffee we drink--about our politics, we weaken our bonds to one another, and work against the fundamental goals of democracy. Talisse advocates civic friendship built (...) around shared endeavors that we must undertake with fellow citizens who do not necessarily share our political affinities as the best way we can obtain a healthier, more sustainable democracy. (shrink)

We live our lives through our emotions, writes Robert Solomon, and it is our emotions that give our lives meaning. What interests or fascinates us, who we love, what angers us, what moves us, what bores us--all of this defines us, gives us character, constitutes who we are. In True to Our Feelings, Solomon illuminates the rich life of the emotions--why we don't really understand them, what they really are, and how they make us human and give meaning to (...) life. Emotions have recently become a highly fashionable area of research in the sciences, with brain imaging uncovering valuable clues as to how we experience our feelings. But while Solomon provides a guide to this cutting-edge research, as well as to what others--philosophers and psychologists--have said on the subject, he also emphasizes the personal and ethical character of our emotions. He shows that emotions are not something that happen to us, nor are they irrational in the literal sense--rather, they are judgements we make about the world, and they are strategies for living in it. Fear, anger, love, guilt, jealousy, compassion--they are all essential to our values, to living happily, healthily, and well. Solomon highlights some of the dramatic ways that emotions fit into our ethics and our sense of the good life, how we can make our emotional lives more coherent with our values and be more "true to our feelings" and cultivate emotional integrity. The story of our lives is the story of our passions. We fall in love, we are gripped by scientific curiosity and religious fervor, we fear death and grieve for others, we humble ourselves in envy, jealousy, and resentment. In this remarkable book, Robert Solomon shares his fascination with the emotions and illuminates our passions in an exciting new way. (shrink)

Robert Stalnaker is an actualist who holds that merely possible worlds are uninstantiated properties that might have been instantiated. Stalnaker also holds that there are no metaphysically impossible worlds: uninstantiated properties that couldn't have been instantiated. These views motivate Stalnaker's "two dimensional" account of the necessary a posteriori on which there is no single proposition that is both necessary and a posteriori. For a (metaphysically) necessary proposition is true in all (metaphysically) possible worlds. If there were necessary a posteriori (...) propositions, that would mean that there were propositions true in all possible worlds but which could only be known to be true by acquiring empirical evidence. Consider such a purported proposition P. The role of empirical evidence for establishing P's truth would have to be to rule out worlds in which P is false. If there were no such worlds to be ruled out, we would not require evidence for P. But by hypothesis, P is necessary and so true in all metaphysically possible worlds. And on Stalnaker's view, the metaphysically possible worlds are all the worlds there are. So there can be no proposition that is true in all possible worlds, but that we require evidence to know. In this way, the motivation for Stalnaker's two dimensional account of the necessary a posteriori rests on his denying that there are metaphysically impossible Worlds. I argue that given his view of what possible worlds are, Stalnaker has no principled reason for denying that there are metaphysically impossible worlds. If I am right, this undercuts Stalnaker's motivation for his two dimensional account of the necessary a posteriori. (shrink)