Here, after a quarter century of additional study and reflection, Bitzer presents a new critical edition of George Campbell’s classic. Bitzer provides a more complete review and assessment of Campbell’s work, giving particular emphasis to Campbell’s theological views, which he demonstrates played an important part in Campbell’s overall view of reasoning, feeling, and moral and religious truth. The _Rhetoric _is widely regarded as the most important statement of a theory of rhetoric produced in the 18th century. Its importance (...) lies, in part, in the fact that the theory is informed by the leading assumptions and themes of the Scottish Enlightenment—the prevailing empiricism, the theory of the association of ideas, the effort to explain natural phenomena by reference to principles and processes of human nature. Campbell’s work engages such themes in an attempt to formulate a universal theory of human communication. Campbell attempts to develop his theory by discovering deep principles in human nature that account for all instances and kinds of human communication. He seeks to derive all communication principles and processes empirically. In addition, all statements in discourse that have to do with matters of fact and human affairs are likewise to be empirically derived. Thus, his theory of rhetoric is vastly wider than, and different from, such classical theories as those proposed by Aristotle, Cicero, and Quintilian, whose theories focused on discourse related to civic affairs. Bitzer shows that, by attempting to elaborate a general theory of rhetoric through empirical procedures, Campbell’s project reveals the limitations of his method. He cannot ground all statements empirically and it is at this point that his theological position comes into play. Inspection of his religious views shows that God’s design of human nature, and God’s revelations to humankind, make moral and spiritual truths known and quite secure to human beings, although not empirically. (shrink)

This essay examines miracle arguments employing Hume?s "Indian prince " in works from Locke to Richard Price, and explains the relation of those arguments to Hume?s "Of Miracles." Miracle advocates aimed to weaken the authority of uniform experience and strengthen testimony, but their arguments, more skeptical than Hume?s, undermined their case for miracles. Hume?s early critics objected that: by his theory, no novel facts, including miracles, can be inferred; he mistakenly collapsed testimony into reasoning from experience; and, miracles are no (...) more contrary to our uniform experience than ice was to Hume?s "Indian prince.". (shrink)

From the early eighteenth century onward, primacy for the invention of binary numeration and arithmetic was almost universally credited to the German polymath Gottfried Wilhelm Leibniz (1646–1716). Then, in 1922, Frank Vigor Morley (1899–1980) noted that an unpublished manuscript of the English mathematician, astronomer, and alchemist Thomas Harriot (1560–1621) contained the numbers 1 to 8 in binary. Morley’s only comment was that this foray into binary was “certainly prior to the usual dates given for binary numeration”. Almost thirty years (...) later, John William Shirley (1908–1988) published reproductions of two of Harriot’s undated manuscript pages, which, he claimed, showed that Harriot had invented binary numeration “nearly a century before Leibniz’s time”. But while Shirley correctly asserted that Harriot had invented binary numeration, he made no attempt to explain how or when Harriot had done so. Curiously, few since Shirley’s time have attempted to answer these questions, despite their obvious importance. After all, Harriot was, as far as we know, the first to invent binary. Accordingly, answering the how and when questions about Harriot’s invention of binary is the aim of this short paper. (shrink)

Lloyd Bitzer’s passing came as deeply sad news. He was an exceptional person in all respects. I was fortunate to have been his student at the University of Wisconsin–Madison and to have experienced Lloyd in my life as a mentor, a colleague in the discipline, a confidant, a friend, and a role model. The discipline of rhetoric was fortunate to have had him among its ranks as a leading theorist. He was among those most responsible for pushing (...) rhetorical studies into new territory during the latter part of the twentieth century. Lloyd was the principle investigator on and driving force behind the National Developmental Project on Rhetoric, which involved forty scholars from philosophy, rhetoric, communication... (shrink)

An essential overview of the science behind stereotypes: from why our brains form them to how recognizing them can help us be less biased.From the time we're babies, our brains constantly sort and label the world around us --- a skill that's crucial for our survival. But, as adolescents are all too aware, there's a tremendous downside: when we do this to groups of people it can cause great harm. Here's a comprehensive introduction to the science behind stereotypes that will (...) help young people make sense of why we classify people, and how we can change our thinking. It covers the history of identifying stereotypes, secret biases in our brains, and how stereotypes affect our sense of self. Most importantly, it covers current research into how science can help us overcome our biases, offering hope for a future where stereotypes are less prevalent and the world is more fair for everyone.Written by award-winning author Tanya Lloyd Kyi, this timely and hopeful book addresses the issues of discrimination, racism, sexism, ableism and homophobia and offers concrete suggestions on how to make change. It uses scientific inquiry and loads of relatable and interesting examples to explore these uncomfortable topics in age-appropriate and engaging ways. Chapters, sidebars and colorful illustrations break the text into manageable chunks. Besides the many ways this book could be used to inspire frank and in-depth discussions on the importance of addressing stereotypes and bias, it also links to many science and social studies curriculum topics. Backmatter includes an extensive list of sources, suggestions for further reading and an index. (shrink)

Frank Lloyd Wright's Taliesin documents and celebrates Wright's 100-year-old masterpiece by using rare vintage postcards to provide a revealing and visually unique journey through Wright's work.

Through letters, memoirs, contemporary documents, and a stunning assemblage of photographs - many of which have never before been published - author Ron McCrea tells the fascinating story of the building of Frank Lloyd Wright's Taliesin, ...

Bodily rhetoric is a burgeoning field, with scholars investing attention to the ways in which non-verbal communication mediates change between individuals and groups in complex scenarios, including political settings. Scenarios in which individuals move together – whether in completely extemporaneous situations or in existing forms such as Contact Improvisation, Argentinian Tango, or Classical Pas de Deux – pose a similarly complex communicative problem. Drawing on the work of Lloyd Bitzer, I demonstrate how rhetorical theory provides methodological insight by (...) which we can better understand the dynamic practice that is always already happening in situations where individuals move together. (shrink)

Bodily rhetoric is a burgeoning field, with scholars investing attention to the ways in which non-verbal communication mediates change between individuals and groups in complex scenarios, including political settings. Scenarios in which individuals move together – whether in completely extemporaneous situations or in existing forms such as Contact Improvisation, Argentinian Tango, or Classical Pas de Deux – pose a similarly complex communicative problem. Drawing on the work of Lloyd Bitzer, I demonstrate how rhetorical theory provides methodological insight by (...) which we can better understand the dynamic practice that is always already happening in situations where individuals move together. (shrink)

Henceforth "to transform" should mean "to change the sense of sense."The field of the entity … is structured according to the diverse—genetic and structural—possibilities of the trace.The first article in the first issue of Philosophy and Rhetoric is "The Rhetorical Situation," Lloyd Bitzer's critical exegesis on "the nature of those contexts in which speakers or writers create rhetorical discourse". Bitzer contends that the rhetor produces "the rhetorical text" when a "real" or "natural" —"objective and publicly observable" —situation (...) "calls the discourse into existence". That was 1968. Five volumes later, as you know, Richard E. Vatz flips the causal relation, maintaining instead that... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:René Girard and the Rhetoric of ConsumptionKathleen M. Vandenberg (bio)The work of René Girard, so productively applied in so many different fields—in theology, in anthropology, in literature, to name a few—has yet to be recognized or applied in the field of rhetorical studies. Yet there exists, I argue, a need precisely for Girard's theories as the over 2000 year-old discipline enters the twenty-first century.Girard's theory of mimetic or triangular (...) desire can be used as a model for understanding persuasion, because it is, among other things, an "expression of a basic set of ideas on... the dynamics of the self and human relations" (1996, vii). Girard's concern is with human relationships and, in a sense, with how individuals in these relationships act rhetorically upon themselves and others. Girard's mimetic theory hinges on the dynamics of imitation and explains how individuals relate through both the conscious and the unconscious sharing of behaviors, attitudes, and beliefs in certain situations. These situations are clearly rhetorical, as can be seen by examining the definition of the "rhetorical situation" set forth by Lloyd Bitzer, in his seminal 1968 article, "The Rhetorical Situation." Bitzer proposes three conditions that must be met for a rhetorical situation to exist: an exigency or imperfection marked by urgency; a rhetorical audience or an audience that can act; and constraints, or elements that have the power to constrain the decision and action needed to modify the exigency (7). In mass-mediated modern rhetoric, I argue that the exigencies exist externally (in the culture) and internally, the audience is both others and self, and the constraints are the alienation, mystification, and desire generated by hierarchies. Twentieth-century rhetorical theorist Kenneth Burke advises that "we must often think of rhetoric not in terms of some one particular address, but as a general body of identifications that owe their convincingness much more to trivial repetition and dull daily reënforcement than to exceptional rhetorical skill" (1950, 26). Such is the case with this particular form of rhetoric, which is generated and propagated by mimetic contagion and thus is best more narrowly defined as sociological propaganda, a type of propaganda [End Page 259] theorized by Jacques Ellul in Propaganda: The Formation of Men's Attitudes (1975).Ellul, the first to distinguish between political propaganda and sociological propaganda, proposes that the latter encompasses social behaviors "much more vast and less certain" than those of political propaganda (1975, 62). These social behaviors permit the penetration of an ideology in a society, a penetration that is achieved through the active participation of the masses. Sociological propaganda, as Ellul describes it, works from within; it is dependent on the individual's willingness and ability to persuade him- or herself and others. Sociological propaganda, Ellul posits, is created when members of a group behave in such a way as to influence the attitudes, actions, and lifestyles of others; often this behavior is unconscious, unintentional, and spontaneous.In these ways, the rhetoric of sociological propaganda operates in a markedly different fashion than more "traditional" rhetoric, which is largely understood to operate as a unilateral transaction in which an individual orator actively, openly, and orally works to move a relatively passive but physically present audience to act in accordance with the orator's own beliefs through a formally delivered speech. In its reliance on the interaction and cooperation of the many rather than the centrality and dominance of one speaker, in its acceptance of unintentional, spontaneous, and unconscious persuasion, in its dependence on the modern mass media, and in the limitless and nebulous nature of its boundaries in time and space, sociological propaganda constitutes a type of rhetoric heretofore insufficiently addressed by rhetorical studies. Although existing perspectives in rhetorical criticism have certainly addressed some aspects of this rhetoric, sociological propaganda is not easily explained with the terminology of traditional rhetorical criticism or easily approached from traditional rhetorical perspectives.This article asserts that the best way to approach and understand such propaganda is through the perspective of René Girard. Approaching this propaganda from a Girardian perspective permits us to look beyond the symbols of sociological propaganda and analyze our own responsibility in rhetorical... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Philosophy and Rhetoric 33.1 (2000) vii-ix [Access article in PDF] In Memory of Henry I first met Henry W. Johstone Jr. during the spring of 1968. I was a doctoral candidate at the University of Wisconsin and Henry was in Madison as part of a distinguished visitor series hosted by my mentor, Lloyd Bitzer. Lloyd had invited a group of graduate students to his home to (...) meet the guest of honor. I was particularly excited because Henry had accepted my paper on Aristotle's theory of exemplification to appear in the new international journal Philosophy and Rhetoric, which he edited. This was my first publication and I wanted to thank him, which seemed to this novice the appropriate thing to do. I remember that evening for Henry's seeming reserve, which I later learned was a deep shyness that masked his capacity for uncanny directness and a wicked sense of humor, and for his generosity in deflecting my naiveté about the basis for editorial judgments. I also remember it for his deft way of engaging a room of young rhetoricians with questions that conveyed his doubt about their subject (he later changed his mind) without clouding his sincere openness to what we had to say. The following fall, we met again during my interview for a position in the Speech Department at Penn State University. I was offered the position and became Henry's colleague as Book Review Editor of P&R. For the next thirty years, I was blessed to serve as Henry's partner-in-crime in the joys of life that may remain today only among the professoriate. We shared in the editorial work of the journal, in co-teaching our graduate seminar in Philosophy and Rhetoric, in our intellectual passion for the bonds and wars between philosophy and rhetoric, and in the pleasure of choosing the right bottle of wine. But more than that, we shared these common pursuits in contexts of luncheons, dinners, and social occasions that mixed intellectual work with the pleasure of treasured company.My son phoned today to tell me that Henry had died. His passing leaves a void in my life that goes beyond the loss of a friend and colleague. Henry was the person who, through patient selection of manuscripts for me to referee and guidance, taught me how to read journal submissions and offer critiques that might help the author to improve and the journal to prosper. Henry was the person who taught me the value of generosity with junior colleagues by his respectful and serious engagement of my own work. He had a marvelous capacity to entertain any idea seriously, to consider the possibility that even a far-fetched conjecture might have value rather than rejecting it out of hand. He lived the ideas he wrote about as a philosopher, arguing always ad hominem and con amore. Henry was the person who took me in tow as a young Turk and suffered my impatience with the conservative ways of our established institution [End Page vii] by taking me to lunch, engaging me in discussions of ideas, and sharing the delights of intellectual work, and in the process helping me retain my ideals and my focus.Lunch for Henry was more than a noontime meal. It was the way he sustained bonds with those he valued as friends and colleagues. He would call two weeks in advance to arrange a date at the Allen Room of the State College Hotel. He would arrive at my office ten minutes early and we would take a leisurely stroll along the Old Main Mall to the hotel. Our arrival was announced by the host with "Good afternoon Dr. Johnstone," that showed in its formality deep respect and in its tone equally deep affection. Henry always took a cocktail with lunch, inviting his companion to join him, and unless you were specific about the bill beforehand, Henry usually insisted on paying. Settling the bill was never an issue for Henry. He often included a graduate assistant from the journal or an assistant professor in our party and seemed to... (shrink)

Recent philosophical attention to climate models has highlighted their weaknesses and uncertainties. Here I address the ways that models gain support through observational data. I review examples of model fit, variety of evidence, and independent support for aspects of the models, contrasting my analysis with that of other philosophers. I also investigate model robustness, which often emerges when comparing climate models simulating the same time period or set of conditions. Starting from Michael Weisberg’s analysis of robustness, I conclude that his (...) approach involves a version of reasoning from variety of evidence, enabling this robustness to be a confirmatory virtue.. (shrink)

The emphasis on the limitations of objectivity, in specific guises and networks, has been a continuing theme of contemporary analytic philosophy for the past few decades. The popular sport of baiting feminist philosophers — into pointing to what's left out of objective knowledge, or into describing what methods, exactly, they would offer to replace the powerful objective methods grounding scientific knowledge — embodies a blatant double standard which has the effect of constantly putting feminist epistemologists on the defensive, on the (...) fringes, on the run.This strategy can only work if objectivity is transparent, simple, stable, and clear in its meaning. It most certainly is not. In fact, taking objectivity as a sort of beautiful primitive, self-evident in its value, and all-powerful in its revelatory power, requires careless philosophy, and the best workers in metaphysics, epistemology, and philosophy of science have made reworked definitions of objectivity absolutely central to their own projects. In fact, classic feminist concerns with exploring the impact of sex and gender on knowledge, understanding, and other relations between human beings and the rest of the world fall squarely within the sort of human and social settings thatare already considered central in most current analytic metaphysics, epistemology, and philosophy of science. I argue that the burden of proof is clearly on those who wish toreject the centrality and relevance of sex and gender to our most fundamental philosophical work on knowledge and reality. (shrink)

We address the controversy in the literature concerning the definition of holobionts and the apparent constraints on their evolution using concepts from community population genetics. The genetics of holobionts, consisting of a host and diverse microbial symbionts, has been neglected in many discussions of the topic, and, where it has been discussed, a gene-centric, species-centric view, based in genomic conflict, has been predominant. Because coevolution takes place between traits or genes in two or more species and not, strictly speaking, between (...) species, it may affect some traits but not others in either host or symbiont. Moreover, when interacting species pairs are embedded in a larger community, indirect ecological effects can alter the expected pairwise dynamics. Mode of symbiont transmission and the degree of host inbreeding both affect the extent of microbial mixing across host lineages and thereby the degree to which selection on one trait of either partner affects other aspects of a holobiont phenotype. We discuss several potential defining criteria for holobionts using community genetics and population genetics models, suggesting their application and limitations. Using community genetics models, we show how conflict between genomes can be self-limiting, while cooperation and mutualism tend to be self-accelerating. It is likely that this bias in the evolutionary dynamics of interaction between hosts and symbionts is an important feature of holobionts. This bias in the evolutionary dynamic could contribute to explaining the absence of cheaters from natural mutualisms, although cheaters are predicted by gene-centered conflict theory to cause the evolutionary instability of mutualisms. Additionally, it may help explain the more frequent origin of mutualisms from parasitic than from free-living systems, an evolutionary trajectory opposite to that predicted by genome conflict theory. (shrink)

I describe an ethic for business administration based on the social tradition of the Catholic Church. I find that much current thinking about business falters for its conceit of truth. Abstractions such as the shareholder-value model contain truth - namely, that business is an economic enterprise to manage for the wealth of its owners. But, as in all abstractions, this truth comes at the expense of falsehood -namely, that persons are assets to deploy on behalf of owners. This last is (...) "wrong" in both senses of the word - it is factually wrong in that persons are far more than business assets, they are supernatural beings, children of God; and it is morally wrong in that it is an injustice to treat them as the former when they are the latter. I draw upon the social tradition of the Catholic Church to recognize that the business of business is not business, but is instead the human person. Following Church teachings, I describe a person-centered ethic of business based upon eight social principles that both correct and enlarge the shareholder-centered ethic of much current business thinking. I discuss implications of this person-centered ethic for business administration. (shrink)

I argue that four of the fundamental claims of those calling themselves `genic pluralists'Philip Kitcher, Kim Sterelny, and Ken Watersare defective. First, they claim that once genic selectionism is recognized, the units of selection problems will be dissolved. Second, Sterelny and Kitcher claim that there are no targets of selection. Third, Sterelny, Kitcher, and Waters claim that they have a concept of genic causation that allows them to give independent genic causal accounts of all selection processes. I argue that each (...) one of these claims is either false or misleading. Moreover, the challenge that arises from the availability of genic causal accounts, namely, the inability to choose on rational grounds among genic and higher-level accounts, is unsupported. (shrink)

The central characteristic of cognitive explanations of behavior is the appeal to inner representations. I examine the grounds which justify representational explanations, seeking the minimum conditions which organisms must meet to be candidates for such explanations. I first discuss Fodor's proposal that representationality be attributed to systems which respond to nonnomic properties, arguing that the distinction between the nomic and nonnomic in perception is fatally ambiguous. Then I turn to an illustrative review of the behavior and neurobiology of Hermissenda crassicornis, (...) a marine mollusk. Concerning this "model system," I compare the representational style of explanation with both behaviorist and neurophysiological explanations. Representational explanation is potentially more comprehensive than its rivals, and thus I conclude that representations are useful posits wherever internal information-bearing states mediate behavior. (shrink)

Accounts of logical independence which coincide when applied in the case of classical logic diverge elsewhere, raising the question of what a satisfactory all-purpose account of logical independence might look like. ‘All-purpose’ here means: working satisfactorily as applied across different logics, taken as consequence relations. Principal candidate characterizations of independence relative to a consequence relation are that there the consequence relation concerned is determined by only by classes of valuations providing for all possible truth-value combinations for the formulas whose independence (...) is at issue, and that the consequence relation ‘says’ nothing special about how those formulas are related that it does not say about arbitrary formulas. Each of these proposals returns counterintuitive verdicts in certain cases—the truth-value inspired approach classifying certain cases one would like to describe as involving failures of independence as being cases of independence, and the de Jongh approach counting some intuitively independent pairs of formulas as not being independent after all. In final section, a modification of the latter approach is tentatively sketched to correct for these misclassifications. The attention is on conceptual clarification throughout, rather than the provision of technical results. Proofs, as well as further elaborations, are lodged in the ‘longer notes’ in a final Appendix. (shrink)

Legal Reason describes and explains the process of analogical reasoning, which is the distinctive feature of legal argument. It challenges the prevailing view, urged by Edward Levi, Cass Sunstein, Richard Posner and others, which regards analogical reasoning as logically flawed or as a defective form of deductive reasoning. It shows that analogical reasoning in the law is the same as the reasoning used by all of us routinely in everyday life and that it is a valid form of reasoning derived (...) from the innate human capacity to recognize the general in the particular, on which thought itself depends. The use of analogical reasoning is dictated by the nature of law, which requires the application of rules to particular facts. Written for scholars as well as students and persons generally who are interested in law, Legal Reason is written in clear, accessible prose, with many examples drawn from the law and from everyday experience. (shrink)

‘Saving the appearances’, , is a slogan that, in its time, stood or was made to stand for many different methodological positions in many different branches of ancient natural science. It is not my aim, in this paper, to attempt to tackle the subject as a whole. I shall concentrate on just one inquiry, astronomy. Nor, with astronomy, can I do justice to all the complexities of what was certainly one of the central methodological issues, if not the central issue, (...) in the history of ancient theoretical astronomy. I have a quite limited aim, to examine the foundations, and test the applicability, of a widespread and influential line of interpretation of ancient Greek astronomy according to which it was essentially, or at least predominantly, what we may call ‘instrumentalist’ in character—that is, broadly speaking, that Greek astronomical theories were devices or fictions put forward purely for the sake of calculations with no claims to correspond with physical reality. (shrink)

If a certain semantic relation (which we call 'local consequence') is allowed to guide expectations about which rules are derivable from other rules, these expectations will not always be fulfilled, as we illustrate. An alternative semantic criterion (based on a relation we call 'global consequence'), suggested by work of J.W. Garson, turns out to provide a much better - indeed a perfectly accurate - guide to derivability.

Knowing Persons is an original study of Plato's account of personhood. For Plato, embodied persons are images of a disembodied ideal. The ideal person is a knower. Hence, the lives of embodied persons need to be understood according to Plato's metaphysics of imagery. For Gerson, Plato's account of embodied personhood is not accurately conflated with Cartesian dualism. Plato's dualism is more appropriately seen in the contrast between the ideal disembodied person and the embodied one than in the contrast between mind (...) or soul and body. (shrink)

We discuss aspects of the logic of negation bearing on an issue raised by Jean-Yves Béziau, recalled in §1. Contrary- and subcontrary-forming operators are introduced in §2, which examines some of their logical behaviour, leading on naturally to a consideration in §3 of dual intuitionistic negation (as well as implication), and some further operators related to intuitionistic negation. In §4, a historical explanation is suggested as to why some of these negation-related connectives have attracted more attention than others. The remaining (...) sections (§§5, 6) briefly address a question about a certain notion of global contrariety and the provision of Kripke semantics for the various operators in play in our discussion. (shrink)

This paper defends the claim that mere temporal proximity always and without exception strengthens certain moral duties, including the duty to save – call this view Robust Temporalism. Although almost all other moral philosophers dismiss Robust Temporalism out of hand, I argue that it is prima facie intuitively plausible, and that it is analogous to a view about special obligations that many philosophers already accept. I also defend Robust Temporalism against several common objections, and I highlight its relevance to a (...) number of practical policy debates, including longtermism. My conclusion is that Robust Temporalism is a moral live option, that deserves to be taken much more seriously in the future. (shrink)

In this paper I distinguish various ways in which empirical claims about evolutionary and ecological models can be supported by data. I describe three basic factors bearing on confirmation of empirical claims: fit of the model to data; independent testing of various aspects of the model, and variety of evident. A brief description of the kinds of confirmation is followed by examples of each kind, drawn from a range of evolutionary and ecological theories. I conclude that the greater complexity and (...) precision of my approach, as compared to, for instance, a Popperian approach, can facilitate detailed analysis and comparison of empirical claims. (shrink)

This is the first title in the Key Themes in Ancient Philosophy series, which provides concise books, written by major scholars and accessible to non-specialists, on important themes in ancient philosophy which remain of philosophical interest today. In this book, Professor Gerson explores ancient accounts of the nature of knowledge and belief from the Presocratics up to the Platonists of late antiquity. He argues that ancient philosophers generally held a naturalistic view of knowledge as well as of belief. Hence, knowledge (...) was not viewed as a stipulated or semantically determined type of belief but was rather a real or objectively determinable achievement. In fact, its attainment was identical with the highest possible cognitive achievement, namely wisdom. It was this naturalistic view of knowledge at which the ancient Skeptics took aim. The book concludes by comparing the ancient naturalistic epistemology with some contemporary versions. (shrink)

Our object is to study the interaction between mereology and David Lewis’ theory of subject-matters, elaborating his observation that not every subject matter is of the form: how things stand with such-and-such a part of the world. After an informal introduction to this point in Section 1, we turn to a formal treatment of the partial orderings arising in the two areas – the part-whole relation, on the one hand, and the relation of refinement amongst partitions of the set of (...) worlds, on the other. We emphasize a certain duality, formulated in and in Section 2, between the corresponding lattice operations – mereological joins with partition-lattice meets, mereological meets with partition-lattice joins. Section 3 presents some issues that are raised by consideration of the informally familiar idea of logical subtraction. These include, in particular, a problem about the need for a notion of independence different from the usual logical notion going by that name. The apparatus of Section 2 promises to throw some light on this problem, as we indicate in Section 4. Section 5 ties up some loose ends and suggests an area in which further work would be desirable. (shrink)

this requirement for adaptations. Emergent characters are always potential adaptations. Not all selection processes produce adaptations, however. The key issue, in delineating a selection process, is the relationship between a character and fitness. The emergent character approach is more restrictive than alternative schemas that delineate selection..

The formula A (it is noncontingent whether A) is true at a point in a Kripke model just in case all points accessible to that point agree on the truth-value of A. We can think of -based modal logic as a special case of what we call the general modal logic of agreement, interpreted with the aid of models supporting a ternary relation, S, say, with OA (which we write instead of A to emphasize the generalization involved) true at a (...) point w just in case for all points x, y, with Swxy, x and y agree on the truth-value of A. The noncontingency interpretation is the special case in which Swxy if and only if Rwx and Rwy, where R is a traditional binary accessibility relation. Another application, related to work of Lewis and von Kutschera, allows us to think of OA as saying that A is entirely about a certain subject matter. (shrink)