In 1883, while a student of C. S. Peirce at Johns Hopkins University, Christine Ladd-Franklin published a paper titled On the Algebra of Logic, in which she develops an elegant and powerful test for the validity of syllogisms that constitutes the most significant advance in syllogistic logic in two thousand years. Sadly, her work has been all but forgotten by logicians and historians of logic. Ladd-Franklin's achievement has been overlooked, partly because it has been overshadowed by the work of other (...) logicians of the nineteenth century renaissance in logic, but probably also because she was a woman. Though neglected, the significance of her contribution to the field of symbolic logic has not been diminished by subsequent achievements of others.In this paper, I bring to light the important work of Ladd-Franklin so that she is justly credited with having solved a problem over two millennia old. First, I give a brief survey of the history of syllogistic logic. In the second section, I discuss the logical systems called “algebras of logic”. I then outline Ladd-Franklin's algebra of logic, discussing how it differs from others, and explain her test for the validity of the syllogism, both in her symbolic language and the more familiar language of modern logic. Finally I present a rigorous proof of her theorem. Ladd-Franklin developed her algebra of logic before the methods necessary for a rigorous proof were available to her. Thus, I do now what she could not have done then. (shrink)

Does Spinoza present philosophy as the preserve of an elite, while condemning the uneducated to a false though palliative form of ‘true religion’? Some commentators have thought so, but this contribution aims to show that they are mistaken. The form of religious life that Spinoza recommends creates the political and epistemological conditions for a gradual transition to philosophical understanding, so that true religion and philosophy are in practice inseparable.

Among the thousands of Hellenistic hemispherical relief bowls found on Delos is a small collection of Athenian bowls, isolated by Alfred Laumonier in the course of his work on the much larger corpus of Ionian bowls. All major decorative types are present, with long‑petal bowls in the majority. The imagery largely matches that of bowls found in Athens, but some new stamps are documented. Many fragments can be attributed to specific workshops. The fragments throw new light on the production process, (...) documenting a previously unsuspected step in that process and offering evidence for the export of molds for the production of “Attic” bowls elsewhere. Although some of the bowls arrived on the island before 167, most were imported later, and the opening of this new market may have had an impact on the development of the Athenian industry. (shrink)

Heroism is apparently nonadaptive in Darwinian terms, so why does it exist at all? Risk-taking and heroic behavior are predominantly male tendencies, and literature and legend reflect this. This study explores the possibility that heroism persists in many human cultures owing to a female preference for risk-prone rather than risk-averse males as sexual partners, and it suggests that such a preference may be exploited as a male mating strategy. It also attempts to quantify the relative influences of altruism and bravery (...) in the evolution of heroism. Our study found that females do prefer risk-prone brave males to risk-averse non-brave males, and that men are aware of this preference. Bravery in a male was shown to be the stronger factor influencing female choice of short-term partners, long-term partners, and male friends, with altruism playing a lesser part in their choice. Altruism was deemed important in long-term relationships and friendships, but for short-term liaisons, non-altruists were preferred to altruists. Heroism may therefore have evolved owing to a female preference for brave, risk-prone males because risk-taking acts as an honest cue for "good genes." Altruism was judged to be a less influential factor in the evolution of heroism than bravery and a demonstrated willingness to take risks. (shrink)

[ Susan Hurley] I argue that the aim to neutralize the influence of luck on distribution cannot provide a basis for egalitarianism: it can neither specify nor justify an egalitarian distribution. Luck and responsibility can play a role in determining what justice requires to be redistributed, but from this we cannot derive how to distribute: we cannot derive a pattern of distribution from the 'currency' of distributive justice. I argue that the contrary view faces a dilemma, according to whether (...) it understands luck in interpersonal or counterfactual terms. /// [Richard J. Arneson] Does it make sense to hold that, if it is bad that some people are worse off than others, it is worse if those who are worse off come to be so through sheer bad luck that it is beyond their power to control? In her contribution to this symposium, Susan Hurley cautions against a closely related fallacy: from the fact that people have come to an unequal condition through unchosen bad luck, it does not follow that, if we aim to undo the influence of unchosen luck, we ought to institute equality of condition. Forswearing the fallacy that Hurley analyses is compatible with answering the question affirmatively, and more generally with holding that principles of distributive justice should be sensitive to the distinction between chosen and unchosen bad luck. This essay explores how this might be done. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Kennedy Institute of Ethics Journal 12.3 (2002) 305-323 [Access article in PDF] Scope Note 41 Bioethics and Cloning, Part I Susan Cartier Poland and Laura Jane Bishop This is Part One of a two part Scope Note on Bioethics and Cloning. Part Two will be published in the December 2002 issue of the Kennedy Institute of Ethics Journal and as a separate reprint. Contents For Parts 1 And (...) 2 Part 1Part 2I.History of the ScienceI.Ethical PerspectivesII.Historical CommentaryII.Religious PerspectivesIII.Animal WelfareIII.Fiction and FilmIV.Laws and Legal Literature"Clone" is a collective noun (I, Stewart 1997, p. 771). A collective noun names a group and is composed of individual members, such as "herd" or "flock." Derived from the Greek kl¯on for twig or slip, "clone" was first used in biology to describe the aggregate of asexually produced progeny of an individual, either naturally occurring or man-made; the definition later expanded to mean a group of genetically identical members who originate from a single ancestor. Thus, a clone is a group that results from the process of asexual reproduction.In nature, cloning occurs either by parthenogenesis (reproduction without fertilization) or by fission (embryo splitting). In a pioneering experiment in 1952, Robert Briggs and Thomas J. King (I, 1952), cancer researchers at the Institute for Cancer Research (today part of the Fox Chase Cancer Center) in Philadelphia, demonstrated on frogs another method of cloning by transplanting nuclei into enucleated cells, a technique called "nuclear transplantation," which John B. Gurdon and colleagues (I, 1958, 1975) used to create clones of frogs.Then, in the late 1970s and early 1980s, two back-to-back frauds in cloning occurred. First, the cloning of a human described by American science journalist David Rorvik in the 1978 book In His Image was called a hoax by a court in [End Page 305] 1982. Second, the cloning of three mice, announced by German wunderkind Karl Illmensee to scientific circles in 1979 (and to the public in 1981), could not be proven to be true, according to convincing evidence by McGrath and Solter (I) published in 1984.With their pronouncement that mammalian cloning was impossible, McGrath and Solter essentially stopped cloning research and funding for such biological research. So by the mid-1980s, instead of further investigating cloning, developmental biologists studied embryology related to in vitro fertilization, while molecular biologists studied recombinant DNA under the newly relaxed NIH guidelines. These two strands of scientific investigation came together in the work of Ian Wilmut, who created in vitro embryos using nuclear transplantation to reproduce genetically engineered cattle. Wilmut was seeking a way to increase the successful birth rate when, in the 1990s, he produced identical twin sheep, Megan and Morag, cloned from an embryonic cell, followed by another sheep, Dolly, cloned from an adult cell. The birth of a mammal from an embryo whose genetic material came from an adult cell firmly re-established the possibility of cloning from adults. Prior to Dolly's birth, scientists believed that adult cells lost the ability to dedifferentiate—i.e., to become unspecialized—and so could not direct the development of an embryo through to birth.The 1997 announcement of Dolly's birth initiated the present widespread discussion of cloning. Because of its potentially vast applications across human health, medicine, agriculture, and business/economics, cloning raises a host of issues including those concerning: genetics and genetic engineering, patenting, animal rights and/or animal welfare (especially for transgenic, research, or cloned animals), organ transplantation, reproduction, eugenics, pharmacology (drug production using transgenic animals), research practices, informed consent, stem cell research, women's rights, children's rights, parental rights and responsibilities, and theology and philosophy. It fosters questions about the meaning and purpose of life, the limits of human powers to intervene in research and therapy, and what it means to be human or animal. In addition, environmentalists and organic farmers raise concerns about the effect of novel animals and plants on the environment, while nutritionists and the lay public wonder... (shrink)

My strategy is to examine a recent trend in philosophical discussions of responsibility, a trend that tries, but I think ultimately fails, to give an acceptable analysis of the conditions of responsibility. It fails due to what at first appear to be deep and irresolvable metaphysical problems. It is here that I suggest that the condition of sanity comes to the rescue. What at first appears to be an impossible requirement for responsibility---the requirement that the responsible agent have created her- (...) or himself---turns out to be the vastly more mundane and non controversial requirement that the responsible agent must, in a fairly standard sense, be sane. (shrink)

A part of the “return to religion” now evident in European philosophy, this book represents the culmination of the career of a leading phenomenological thinker whose earlier works trace a trajectory from Marx through a genealogy of psychoanalysis that interprets Descartes’s “I think, I am” as “I feel myself thinking, I am.” In this book, Henry does not ask whether Christianity is “true” or “false.” Rather, what is in question here is what Christianity considers as truth, what kind of truth (...) it offers to people, what it endeavors to communicate to them, not as a theoretical and indifferent truth, but as the essential truth that by some mysterious affinity is suitable for them, to the point that it alone is capable of ensuring them salvation. In the process, Henry inevitably argues against the concept of truth that dominates modern thought and determines, in its multiple implications, the world in which we live. Henry argues that Christ undoes “the truth of the world,” that He is an access to the infinity of self-love, to a radical subjectivity that admits no outside, to the immanence of affective life found beyond the despair fatally attached to all objectifying thought. The Kingdom of God accomplishes itself in the here and now through the love of Christ in what Henry calls “the auto-affection of Life.” In this condition, he argues, all problems of lack, ambivalence, and false projection are resolved. (shrink)

The topic of self-interest raises large and intractable philosophical questions–most obviously, the question “In what does self-interest consist?” The concept, as opposed to the content of self-interest, however, seems clear enough. Self-interest is interest in one's own good. To act self-interestedly is to act on the motive of advancing one's own good. Whether what one does actually is in one's self-interest depends on whether it actually does advance, or at least, minimize the decline of, one's own good. Though it may (...) be difficult to tell whether a person is motivated by self-interest in a particular instance, and difficult also to determine whether a given act or decision really is in one's self-interest, the meaning of the claims in question seems unproblematic. My main concern in this essay is to make a point about the content of self-interest. Specifically I shall put forward the view that meaningfulness, in a sense I shall elaborate, is an important element of a good life. It follows, then, that it is part of an enlightened self-interest that one wants to secure meaning in one's life, or, at any rate, to allow and promote meaningful activity within it. Accepting this substantial conception of self-interest, however, carries with it a curious consequence: the concept of self-interest which formerly seemed so clear begins to grow fuzzy. Fortunately, it comes to seem less important as well. In Reasons and Persons, Derek Parfit distinguishes three sorts of theories about self-interest–hedonistic theories, preference theories, and what he calls “objective-list theories." Hedonistic theories hold that one's good is a matter of the felt quality of one's experiences. (shrink)

Summary Analogue models are actual physical setups used to model something else. They are especially useful when what we wish to investigate is difficult to observe or experiment upon due to size or distance in space or time: for example, if the thing we wish to investigate is too large, too far away, takes place on a time scale that is too long, does not yet exist or has ceased to exist. The range and variety of analogue models is too (...) extensive to attempt a survey. In this article, I describe and discuss several different analogue model experiments, the results of those model experiments, and the basis for constructing them and interpreting their results. Examples of analogue models for surface waves in lakes, for earthquakes and volcanoes in geophysics, and for black holes in general relativity, are described, with a focus on examining the bases for claims that these analogues are appropriate analogues of what they are used to investigate. A table showing three different kinds of bases for reasoning using analogue models is provided. Finally, it is shown how the examples in this article counter three common misconceptions about the use of analogue models in physics. (shrink)

Lewis, according to Kuklick, was ‘a private person’, of ‘unsparing honesty and … utter dedication to the rational pursuit of truth’. He was, Kuklick continues, ‘equally uncompromising in what he expected of his readers, and as a result wrote for and lectured to a tiny group of scholars’. I hope that—since I occasionally find myself borrowing from him and frequently find myself arguing with him—I may count myself as one of the ‘tiny group of scholars’ for whom Lewis wrote. And (...) perhaps, by arguing with him again here, I may persuade some of you of the enduring interest of his work. (shrink)

Term is starting and I’m not going back! Whoopee! At the age of fifty I feel like a wild schoolgirl tearing off my hated uniform and bursting into a chorus of ‘No more Latin, no more ....’ only this time it’s ‘No more meetings, no more forms, no more TQA and no more ...’.

Neuroscientist Benjamin Libet of the University of California in San Francisco asked volunteers to do exactly that. A clock allowed the subjects to note exactly when they decided to act, and by fitting electrodes to their wrists, Libet could time the start of the action. More electrodes on their scalps recorded a particular brain wave pattern called the readiness potential, which occurs just before any complex action and is associated with the brain planning its next move.

Most answers to the mind-body problem are claims about the nature of mental properties and substances. But advocates of non-reductive physicalism have generally neglected the topic of the nature of substance, quickly nodding to the view that all substances are physical, while focusing their intellectual energy on understanding how mental properties relate to physical ones. Let us call the view that all substances are physical or are exhaustively composed of physical substances substance physicalism (SP). Herein, I argue that non-reductive physicalism (...) (NRP) cannot uphold substance physicalism and is thereby false. For NRP faces a mind problem: its commitment to property irreducibility prevents that which bears the mental properties—the mind, or on some views, the self or person—from being a physical thing. (shrink)

Confessional modes of self-representation have become crucial in feminist epistemologies that broaden and contextualize the location and production of knowledge. In some versions of confessional feminism, the insertion of “I” is reflective, the product of an uncomplicated notion of experience that shuttles into academic discourse apersonal truth. In contrast to reflective intrusions of the first person, reflexive confessing is primarily a questioning mode that imposes self-vigilance on the process of self positioning.

Lewis's account of the role of sensory experience in empirical knowledge rests on the theses: (1) that one's apprehension of what is given in sensory experience is certain; (2) that unless there were such certain apprehension of the given, No knowledge would be possible; (3) that justification of one's other justified empirical beliefs always derives from one's apprehension of the given. I show that all three theses are false. That they are false provides further motivation for the theory of justification (...) I call "foundherentist", Which is fallibilist and permits mutual support (see my "theories of knowledge; an analytic framework", "proceedings of the aristotelian society, Lxxxiii", 1982-3). (shrink)

What the moral theologian has to teach concerning the Sermon on the Mount depends fundamentally on how these words of the Lord are heard. With hearing comes understanding, and because this Sermon is considered in the tradition to be a kind of interpretative key to any understanding of the Christian life as such, the way one hears what is being said is critical to the formation and practices of faith in the believer. In an age determined by nihilism, this hearing (...) has been overtaken by the need to reassert the moral god, in consequence of which faith is reduced to its service in propping up an otherwise endangered morality, however variously that may be described. This is illustrated with reference to John Paul II's encyclical letter, Veritatis Splendor. What is lost through such an account is the hearing of this Sermon as a word of grace, from out of whose movement the hearer is prepared for the reception of faith and is turned out toward the future with God. St Thomas Aquinas's teaching shows how each use of grace is an event of appropriation wherein the believer is conformed to Christ, so that in one's understanding and making one's own of what is being heard, God is claiming His own. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Hume Studies Volume XXIII, Number 2, November 1997, pp. 195-212 The Moral Self and the Indirect Passions SUSAN M. PURVIANCE David Hume1 and Immanuel Kant are celebrated for their clear-headed rejection of dogmatic metaphysics, Hume for rejecting traditional metaphysical positions on cause and effect, substance, and personal identity, Kant for rejecting all judgments of experience regarding the ultimate ground of objects and their relations, not just judgments of (...) cause and substantiality. Nevertheless, each argues that practical activity is not compromised by the rejection of metaphysical claims that others had taken to be crucial. Kant and Hume thought that political and moral life did not depend upon theoretical knowlege of the nature of the self, free will, or knowledge of the true motives of actions or the character of the agent. Because the grounds of morality and politics were too important to leave to the mercies of speculative metaphysics, each moved their foundations to higher ground, insulating the grounds of practical activity from the threat of metaphysical turmoil and skepticism. Contemporary philosophers have generally followed Hume and Kant in this regard, but often select very different strategies. Some think that the best way to avoid the problems associated with contemporary scientific ontologies is to separate ethics from the factual domain entirely. Some give moral and political language a noncognitivist interpretation, and others have interpreted values as a projection of the passions and affections of the subject or as the constructions of suitably situated practical reasoners.2 At the same time there has been a resurgence of interest in moral realism. Moral realists think that the objectivity of moral discourse, and hence the Susan M. Purviance is at the Department of Philosophy, The University of Toledo, Toledo OH 43606-3390 USA. 196 Susan M. Purviance possibility of moral truth, depend upon the existence of moral facts.3 Moral realists have tended to concentrate on the role of facts in establishing the truth of general moral principles, or the Tightness or moral value of particular individual actions. For moral realists, moral facts are the states of affairs that make general moral principles or particular moral judgments true. Whether these facts are of a naturalistic sort or not, whether they are literally on a par with natural facts, or whether they simply play the same role in practical knowledge that natural facts play in theoretical knowledge, is an open question. Moral realists often are naturalists, like David O. Brink and Jonathan Dancy, but they may be nonnaturalists, like G. E. Moore.4 Ethical naturalism accounts for moral motivation and the cultivation of good character in terms of moral qualities, and many hope to ground it in (or at least show that it is compatible with) the scientific understanding of objects and their relations and qualities. Naturalism is only one option, but realism has received support because it is not clear that antirealists have developed a convincing alternative to the grounding of concepts of moral agency and moral judgment in some sort of moral facts. Questions abound about what it means to ascribe responsibility to a moral self and how we can defend a notion of enduring character. Although moral realists have paid less attention to the ontological status of virtues and character traits than to moral principles, their status is equally important. Here the concern is with the sort of metaphysics of the self thought to be necessary to account for moral agency, responsibility, praise, and blame. I shall argue that there is a class of moral facts that justify or perhaps merely vindicate the ascription of moral powers to agents, and that these are the sorts of facts another sort of theorist is interested in, whereas the states of affairs that make moral judgments true are the sorts of facts that moral realists have been interested in. In order to distinguish this use of moral facts I shall call this sort of theory a Fact of Agency Theory, and it is a version of this theory that can be found in Hume's discussion of the problem of the self and the indirect passions. A realist metaphysics of morals needs to address two questions, the question of the reality of the... (shrink)

A brain-computer interface technology that can decode the neural signals associated with attempted but unarticulated speech could offer a future efficient means of communication for people with severe motor impairments. Recent demonstrations have validated this approach. Here we assume that it will be possible in future to decode imagined (i.e., attempted but unarticulated) speech in people with severe motor impairments, and we consider the characteristics that could maximize the social utility of a BCI for communication. As a social interaction, communication (...) involves the needs and goals of both speaker and listener, particularly in contexts that have significant potential consequences. We explore three high-consequence legal situations in which neurally-decoded speech could have implications:Testimony, where decoded speech is used as evidence;Consent and Capacity, where it may be used as a means of agency and participation such as consent to medical treatment; andHarm, where such communications may be networked or may cause harm to others. We then illustrate how design choices might impact the social and legal acceptability of these technologies. (shrink)

Antisthenes was famous in antiquity for his studies of Homer's poems, his affiliation with Gorgias and the sophistic movement, his pure Attic writing style, and his inspiration of Diogenes of Sinope, who founded the Cynic philosophical movement. Antisthenes stands at two of the greatest turning points in ancient intellectual history: from pre-Socraticism to Socraticism, and from classical Athens to the Hellenistic period. Antisthenes' works form the path to a better understanding of the intellectual culture of Athens that shaped Plato and (...) laid the foundations for Hellenistic philosophy and literature. Antisthenes of Athens keeps in mind the goals and polemics framing each philosophical and textual discussion. The volume considers the ancient traditions about Antisthenes' rejection of Plato's “Theory of Forms,” his assertion of the paradox, “It is impossible to gainsay,” and his denial that definition of essence is possible, as well as the plausible intentions of Antisthenes. In cases where these questions are not easily settled, and where modern interpretation has varied, Susan H. Prince identifies the roots of the disagreements. The goal and meaning of Antisthenes' other famous ancient paradox, “I would rather go mad than have pleasure,” is illuminated by comparison with other evidence showing that pleasure does have a place in his ideology. Evidence for his relationship to Diogenes of Sinope, and for his receptions by the Cynics, Stoics, Skeptics, Christians, and Neo-Pagans is examined for both its historical value and its distorting tendencies. (shrink)

Philosophical discussion of Alan Turing’s writings on intelligence has mostly revolved around a single point made in a paper published in the journal Mind in 1950. This is unfortunate, for Turing’s reflections on machine (artificial) intelligence, human intelligence, and the relation between them were more extensive and sophisticated. They are seen to be extremely well-considered and sound in retrospect. Recently, IBM developed a question-answering computer (Watson) that could compete against humans on the game show Jeopardy! There are hopes it can (...) be adapted to other contexts besides that game show, in the role of a collaborator of, rather than a competitor to, humans. Another, different, research project—an artificial intelligence program put into operation in 2010—is the machine learning program NELL (Never Ending Language Learning), which continuously ‘learns’ by ‘reading’ massive amounts of material on millions of web pages. Both of these recent endeavors in artificial intelligence rely to some extent on the integration of human guidance and feedback at various points in the machine’s learning process. In this paper, I examine Turing’s remarks on the development of intelligence used in various kinds of search, in light of the experience gained to date on these projects. (shrink)

According to transhumanists who urge the radical enhancement of human beings, humanity’s top priority should be engineering “posthumans,” whose features would include agelessness. Increasingly, transhumanism is critiqued on foundational grounds rather than based largely on anticipated results of its implementation, such as rising social inequality. This expansion is crucial but insufficient because, despite its radical aim, transhumanism reflects beliefs and attitudes that are evident in the broader culture. With a focus on the yearning to eliminate aging, I consider four of (...) these: a disproportionate reliance on science and technology to address major human challenges; the conceptualization of human beings in terms of binaries like “young-old”; a repudiation of vulnerability; and intensifying perfectionism. Illuminating these interlocked commitments both deepens an existing critique of transhumanism and draws our attention to deleterious cultural views that must be vigorously contested if our commitment to human flourishing is to be deep and unwavering. (shrink)

Forthright and wryly humorous, philosopher Susan Haack deploys her penetrating analytic skills on some of the most highly charged cultural and social debates of recent years. Relativism, multiculturalism, feminism, affirmative action, pragmatisms old and new, science, literature, the future of the academy and of philosophy itself—all come under her keen scrutiny in _Manifesto of a Passionate Moderate_. "The virtue of Haack's book, and I mean _virtue_ in the ethical sense, is that it embodies the attitude that it exalts... Haack's (...) voice is urbane, sensible, passionate—the voice of philosophy that matters. How good to hear it again."—Jonathan Rauch, _Reason_ "A tough mind, confident of its power, making an art of logic... a cool mastery."—Paul R. Gross, _Wilson Quarterly_ "Few people are better able to defend the notion of truth, and in strong, clear prose, than Susan Haack... a philosopher of great distinction."—Hugh Lloyd-Jones, _National Review_ "If you relish acute observation and straight talk, this is a book to read."—_Key Reporter_ "Everywhere in this book there is the refreshing breeze of common sense, patiently but inexorably blowing."—Roger Kimball, _Times Literary Supplement_ "A refreshing alternative to the extremism that characterizes so much rhetoric today."—_Kirkus Reviews_. (shrink)

The phenomenon of multiple personality--Like the "split-Brain" phenomenon--Involves a disintegration of the normally unified self to the point where one must question whether there is one, Or more than one, Person associated with the body even at a single moment in time. Besides the traditional problem of determining identity over time, There is now a new problem of personal identity--Determining identity at a single moment in time. We need the conceptual apparatus to talk about this new problem and a test, (...) Like the one I propose, For determining the number of persons associated with a body at a single moment in time. (shrink)

PART ONE I 'Alternative' in 'Alternative logic There are many systems of logic — many-valued systems and modal systems for instance - which are non-standard ...

I argue that property dualists cannot hold that minds are physical substances. The focus of my discussion is a property dualism that takes qualia to be sui generis features of reality.

Mouse models of human genetic disorders provide a valuable resource for investigating the pathogenesis of genetic disease and for testing potential therapies. The high degree of resolution of linkage mapping in the mouse allows mutant phenotypes to be mapped precisely which, combined with the accurate definition of areas of homology between the mouse and human genomes, greatly facilitates the identification of mouse models. We describe here mouse models of human single gene disorders dividing them into three categories depending on the (...) information available; phenotypic similarities, comparative mapping and identification of the underlying genetic lesion. (shrink)