This paper explores the consequences of the theoretical forward activation enzymatic pathway A 0 A 1 A 2 A 3 where E 1 convents A 0 to A 1, E 2 converts A 1 to A 2 and E 3 converts A 2 to A 3. A 0, which is environmentally determined, also serves to activate (or modulate) the activity of E 3 in such a way as to keep the concentration of A 2 ([A 2]) constant at a particular (...) set-point value. For mathematical simplicity, first order rate kinetics are used where k 1, k 2 and k 3 are the rate constants for E 1, E 2, and E 3 respectively. It is shown that if k 3 is modulated appropriately so as keep [A 2] at the setpoint value with a changing upstream [A 0], then the modulation of k 3 must be anticipatory of the dynamics of the biochemical pathway. In other words, the rate of change of k 3, will be a function of [A 0], k 1, k 2, k 3, and the set-point value of [A 2]. If the modulation of k 3 does not perfectly model (anticipate) the reaction pathway of which it is a part, then the actual [A 2] will deviate from the set-point value. This type of anticipatory feed-forward activation may represent an important aspect of biological organization. (shrink)

There may be circumstances in which it is morally justifiable intentionally to kill a person who is morally innocent, threatens no one, rationally wishes not to die, and does not consent to be killed. Although the killing would wrong the victim, it might be justified by the necessity of averting some disaster that would otherwise occur. In other instances of permissible killing, however, the justification appeals to more than consequences. It may appeal to the claim that the person to be (...) killed has acted in such a way that to kill him would neither wrong him nor violate his rights, even if he has not consented to be killed or to be subjected to the risk of being killed. In these cases, I will say that the person is liable to be killed. Although I borrow the notion of liability from legal theory, and although much of what I say will be informed by the literature on liability in both tort law and criminal law, my concern in this article is with moral rather than legal liability. (shrink)

This book provides an original and provocative combination of ethnomethodological analysis and the concepts of linguistic philosophy with a breadth and clarity unusual in this field of writing. It is designed to be read by sociologists, psychologists and philosophers and concerns itself with the contributions of Wittgenstein, defending the claim for his relevance to the human sciences. However, this book goes some way beyond the usual limitations of such interdisciplinary works by outlining some empirical applications of ideas derived from the (...) Wittgenstein tradition. (shrink)

This paper defends “moral individualism” against various arguments that have been intended to show that membership in the human species or participation in our distinctively human form of life is a sufficient basis for a moral status higher than that of any animal. Among the arguments criticized are the “nature-of-the-kind argument,” which claims that it is the nature of all human beings to have certain higher psychological capacities, even if, contingently, some human beings lack them, and various versions of the (...) idea that there is a special form of life that all human beings share but of which no animal can be a full participant. The paper concludes that none of these arguments succeeds in demonstrating that there are moral reasons to permit animals to be treated less well than members of our own species whose psychological capacities and potential are no higher than those of the animals. (shrink)

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The dominant conception of brain death as the death of the whole brain constitutes an unstable compromise between the view that a person ceases to exist when she irreversibly loses the capacity for consciousness and the view that a human organism dies only when it ceases to function in an integrated way. I argue that no single criterion of death captures the importance we attribute both to the loss of the capacity for consciousness and to the loss of functioning of (...) the organism as a whole. This is because the person or self is one thing and the human organism is another. We require a separate account of death for each. Only if we systematically distinguish between persons and human organisms will we be able to provide plausible accounts both of the conditions of our ceasing to exist and of when it is that we begin to exist. This paper, in short, argues for a form of mind-body dualism and draws out some of its implications for various practical moral problems. (shrink)

Many alleged counter-examples to intentionalism, the thesis that the phenomenology of perceptual experiences of a given sense modality supervenes on the contents of experiences of that modality, can be avoided by adopting a liberal view of the sorts of properties that can be represented in perceptual experience. I argue that there is a class of counter-examples to intentionalism, based on shifts in attention, which avoids this response. A necessary connection between the contents and phenomenal characters of perceptual experiences can be (...) preserved by distinguishing perceptual phenomenology from the phenomenology of attention; but even if this distinction is viable, these cases put pressure on the thesis that phenomenal character can, in general, be explained in terms of mental representation. (shrink)

The main objection to human embryonic stem cell research is that it involves killing human embryos, which are essentially beings of the same sort that you and I are. This objection presupposes that we once existed as early embryos and that we had the same moral status then that we have now. This essay challenges both those presuppositions, but focuses primarily on the first. I argue first that these presuppositions are incompatible with widely accepted beliefs about both assisted conception and (...) monozygotic twinning. I then argue that we never existed as embryos. If this last claim is right, killing an embryo does not kill someone like you or me but merely prevents one of us from existing. (shrink)

In Sounds, Ecologies, Musics, authors pose exciting challenges and provide fresh opportunities for scholars, scientists, environmental activists, and musicians to consider music and sound from ecological standpoints. The book covers topics such as how environment enables music and sound, how music and sound relate to Western environmental science, and mutidisciplinary collaborations among scholars.

Many people who believe that abortion may often be justified by appeal to the pregnant woman’s interests also believe that a woman’s infliction of significant but nonlethal injury on her fetus can seldom be justified by appeal to her interests. Yet the second of these beliefs can seem to cast doubt on the first. For the view that the infliction of prenatal injury is seriously morally objectionable may seem to presuppose a view about the status of the fetus that challenges (...) the permissibility of abortion. The fear of being interpreted as implicitly endorsing such a view has thus led some defenders of abortion to be reluctant for tactical reasons to condemn the infliction of prenatal injury. In this they are encouraged by those who exploit the issue of prenatal injury in their campaign against abortion. When, for example, the House and Senate in 2004 passed legislation recognizing two victims of an assault against a pregnant woman, many viewed this as a tactic in a larger strategy to restrict access to abortion. This tactic is potentially effective. For people may find it compelling to infer that, if injuring a fetus is seriously objectionable, abortion must be even more objectionable, since killing is normally more seriously objectionable than merely injuring. (shrink)

In "Assertion," Geach identified failure to attend to the distinction between meaning and speech act as a source of philosophical errors. I argue that failure to attend to this distinction, along with the parallel distinction between attitude and content, has been behind the idea that meaning and content are, in some sense, normative. By an argument parallel to Geach's argument against performative analyses of "good" we can show that the phenomena identified by theorists of the normativity of content are properties (...) in the first instance of speech act and propositional attitude types, rather than content as such. (shrink)

Some linguistic phenomena can occur in uses of language in thought, whereas others only occur in uses of language in communication. I argue that this distinction can be used as a test for whether a linguistic phenomenon can be explained via Grice’s theory of conversational implicature. I argue further, on the basis of this test, that conversational implicature cannot be used to explain quantifier domain restriction or apparent substitution failures involving coreferential names, but that it must be used to explain (...) the phenomenon of referential uses of definite descriptions. I conclude with a brief discussion of the relevance of this point to the semantics/pragmatics distinction. (shrink)

This is a position paper concerning the role of empirical studies of human default reasoning in the formalization of AI theories of default reasoning. We note that AI motivates its theoretical enterprise by reference to human skill at default reasoning, but that the actual research does not make any use of this sort of information and instead relies on intuitions of individual investigators. We discuss two reasons theorists might not consider human performance relevant to formalizing default reasoning: (a) that intuitions (...) are sufficient to describe a model, and (b) that human performance in this arena is irrelevant to a competence model of the phenomenon. We provide arguments against both these reasons. We then bring forward three further considerations against the use of intuitions in this arena: (a) it leads to an unawareness of predicate ambiguity, (b) it presumes an understanding of ordinary language statements of typicality, and (c) it is similar to discredited views in other fields. We advocate empirical investigation of the range of human phenomena that intuitively embody default reasoning. Gathering such information would provide data with which to generate formal default theories and against which to test the claims of proposed theories. Our position is that such data are the very phenomena that default theories are supposed to explain. (shrink)

James Higginbotham presents a theory of semantic interpretation which violates the principle of semantic compositionality. He gives an argument by means of an example construction in favor of his contention. I show that compositioinal theories have more resources than some researchers give it credit for, and that these can be used in two different ways to account for the phenomenon Higginbotham describes.

Death and Philosophy presents a wide ranging and fascinating variety of different philosophical, aesthetic and literary perspectives on death. Death raises key questions such as whether life has meaning of life in the face of death, what the meaning of "life after death" might be and whether death is part of a narrative that can be retold in different ways, and considers the various types of death, such as brain death, that challenge mind-body dualism. The essays also include explorations of (...) Chinese, Japanese and Tibetan perspectives on death and why death in some cultures, such as in Mexico's day of the dead, is celebrated. (shrink)

Michael Walzer suggests that our common beliefs about individual responsibility and liability become largely irrelevant in the conduct of war. In conditions of war, everything is changed. Political realists have claimed that war eliminates morality; Walzer claims that war collectivizes it. I believe that conditions of war change nothing at all; they simply make it more difficult to ascertain relevant facts. This is not to say that the principles and laws that do or should govern the activity of war are (...) identical to those governing relations among individuals. Just as domestic law cannot simply restate the principles of individual morality, because the declaration and enforcement of laws have effects that must be taken into account in the formulation of the law, so too the principles, conventions, and laws of war cannot simply restate the principles of individual or international morality. The rules of war have to accommodate our epistemic limitations and to be formulated with a regard for the ways in which their announcement is likely to affect people’s behavior. But they should otherwise reflect as closely as possible the.. (shrink)

Millians sometimes claim that we can explain the fact that sentences like "If Hesperus exists, then Hesperus is Phosphorus" seem a posteriori to speakers in terms of the fact that utterances of sentences of this sort would typically pragmatically convey propositions which really are a posteriori. I argue that this kind of pragmatic explanation of the seeming a posterioricity of sentences of this sort fails. The main reason is that for every sentence like the above which (by Millian lights) is (...) a priori, seems a posteriori to most speakers, and would typically be used to convey a posteriori propositions, there is another which (again, by Millian lights) is a priori, seems a posteriori to most speakers, but can only typically be used to convey a priori propositions. (shrink)

We investigate the notion of relevance as it pertains to ‘commonsense’, subjunctive conditionals. Relevance is taken here as a relation between a property (such as having a broken wing) and a conditional (such as birds typically fly). Specifically, we explore a notion of ‘causative’ relevance, distinct from ‘evidential’ relevance found, for example, in probabilistic approaches. A series of postulates characterising a minimal, parsimonious concept of relevance is developed. Along the way we argue that no purely logical account of relevance (even (...) at the metalevel) is possible. Finally, and with minimal restrictions, an explicit definition that agrees with the postulates is given. (shrink)

Vagueness: an expression is vague if and only if it is possible that it give rise to a “borderline case.” A borderline case is a situation in which the application of a particular expression to a (name of) a particular object does not generate an expression with a definite TRUTH-VALUE. That is, the piece of language in question neither applies to the object nor fails to apply.

It is often argued that there is a connection between certain forms of environmental or place-oriented thinking and conservative or reactionary politics. Frequently, the philosopher Martin Heidegger is taken to exemplify this connection through his own involvement with Nazism. In this essay, I explore the relations between Heidegger's thought and that of certain other key thinkers, principally the ethologist Jakob von Uexküll, and the geographers Friedrich Ratzel and Paul Vidal de la Blache, as well as with elements of Nazi ideology. (...) While Heidegger, Ratzel and Vidal de la Blache are shown to have a similar commitment to a holistic conception of the relation between human being and the world, and to also give priority to ideas of geographic space, or, as we may also say, to place, this is shown to run counter to the essentially subjectivist and biologically determinist position that is associated with Nazi thinking on these matters, and that can also be seen as a key element in the work of von Uexküll. It is argued that the clarification of these issues is not only important for matters of intellectual history alone, but also to ongoing discussions about the role and significance of place. Given the influence of geographical considerations on contemporary historiography, as well as in a number of other disciplines, and given also the role played by Ratzel and Vidal de la Blache, as well as Heidegger, in the rise of such 'place-oriented' thinking, the exploration and clarification of the differences at issue here is especially important. (shrink)

Bruno Latour has been attempting to transform his sociological account of science into an ambitious theory of democracy. In a key early moment in this project, Latour alleges that Plato’s Gorgias introduces an impossibly ratio-nalistic and deeply anti-democratic philosophy which continues to this day to distort our understandings of science and democracy. Latour reckons that if he can successfully refute the Gorgias , then he will have opened up a space in which to authorize his own theory of democracy. I (...) argue that Latour’s refutation of the Gorgias is a failure. Hence, his political theory is, by his own standards, horribly underdetermined. I present another reading of the Gorgias , and consider the dialogue’s possible relevance for current theories of deliberative democracy. Key Words: Latour • Gorgias • Socrates • rhetoric • elenchus • deliberative democracy. (shrink)

Most arguments against God’s existence aim to show that it is incompatible with various apparent features of the world, such as the existence of evil or of human free will. In response, theists have sought to show that God’s existence is compatible with these features of the world. However, the fact that the proposition that God exists is necessary if possible introduces some underappreciated difficulties for these arguments.

The most widely accepted and well worked out approaches to the foundations of meaning take facts about the meanings of linguistic expressions at a time to be derivative from the propositional attitudes of speakers of the language at that time. This mentalist strategy takes two principal forms, one which traces meaning to belief, and one which analyzes it in terms of communicative intentions. I argue that either form of mentalism fails, and conclude by suggesting that we can do better by (...) focusing on connections between linguistic meaning and the contents of perceptions (rather than beliefs or intentions), and by (following Kripke's approach to reference) replacing questions about the nature of meaning with questions about the nature of term introduction and meaning transmission. (shrink)

The article is a critical examination of Marcuse's speculations about the possibility of determining a biological foundation for ethical norms. It considers three key objections to this project: that Marcuse fails to adequately define needs, that he misinterprets Freud, and that, details aside, he fundamentally misunderstands what a `biological' foundation for ethics would entail. The objections are accepted, to varying degrees, as regards the content of Marcuse's argument. The article concludes, however, with a different account of biological foundations designed to (...) rescue the deeper aims of Marcuse's project. Key Words: biology • ethics • foundation • Herbert Marcuse • needs • socialism. (shrink)

This title is now available in a new format. Refer to Heidegger: A Graphic Guide 9781848311749.

There are many algorithm texts that provide lots of well-polished code and proofs of correctness. Instead, this book presents insights, notations, and analogies to help the novice describe and think about algorithms like an expert. By looking at both the big picture and easy step-by-step methods for developing algorithms, the author helps students avoid the common pitfalls. He stresses paradigms such as loop invariants and recursion to unify a huge range of algorithms into a few meta-algorithms. Part of the goal (...) is to teach the students to think abstractly. Without getting bogged with formal proofs, the book fosters a deeper understanding of how and why each algorithm works. These insights are presented in a slow and clear manner accessible to second- or third-year students of computer science, preparing them to find their own innovative ways to solve problems. (shrink)

Ted Relph’s review of Heidegger’s Topology acknowledges the importance of Heidegger’s thought in the contemporary turn to place within the Humanities and Social Sciences, just as it acknowledges the importance of the philosophical inquiry into place as such (Relph is also particularly generous in his estimation of the role of my work, in Heidegger’s Topology and elsewhere, in contributing to this). Moreover, Relph provides a strikingly apt and vivid image of the way the concept of ‘place’ has, in recent years, (...) ‘exploded’ across many different areas and disciplines, in a proliferation of different forms and uses. While there are many works that deploy various senses of place, and that also delineate the detailed textures and forms of particular places, when it comes to the theoretical inquiry into place, the focus, for the most part, is not on place as such, but either on the effects of place or else on place as itself an effect of other processes. Thus David Harvey, as Relph notes, treats place as a social construction, claiming that the only interesting question then concerns the social processes that give rise to place (see Harvey, 1996: 293-4) – here place is nothing more than an effect; Doreen Massey, on the other hand, treats place, which she refuses to distinguish from space, as significant largely in terms of the consequences of our imagination of place (see Massey, 2005: esp. 5-8) – here it is the effects of place that are given priority. Even the work of a theorist such as Henri Lefebvre (see especially Lefebvre, 1991), so often cited as a key figure in the literature on place, turns out to be important, less for his elucidation of the concept, than.. (shrink)

There is a general presumption that the law should be congruent with morality – that is, that the prohibitions and permissions in the law should correspond to the prohibitions and permissions of morality. And indeed in most areas of domestic law, and perhaps especially in the criminal law, the elements of the law do in general derive more or less directly from the requirements of morality. I will argue in this essay, however, that this correspondence with morality does not and (...) at present cannot hold in the case of the international law of war. For various reasons, largely pragmatic in nature, the law of war must be substantially divergent from the morality of war. (shrink)

statistical linguistics with its own conception the main it is very clearly written. If the of what semantics is, IL, or some variant of..

In this study, we examine the problem of belief revision, defined as deciding whic h of several initially-accepted sentences to disbelieve, when new information presents a l ogical inconsistency with the initial set. In the first three experiments, the initial sentence set included a conditional sentence, a non-conditional sentence, and an inferred conclusi on drawn from the first two. The new information contradicted the inferred conclusion. Results indicated that the conditional sentences were more readily abandoned than non-c onditional sentences, even (...) when either choice would lead to a consistent belief state, and that this preference was more pronounced when problems used natural language cover sto ries rather than symbols. The pattern of belief revision choices differed depending on whe ther the contradicted conclusion from the initial belief set had been a modus ponens or m odus tollens inference. Two additional experiments examined alternative model-theoretic definitions of minimal change to a belief state, using problems that contained multiple mo dels of the initial belief state and of the new information that provided the contradiction. The results indicated that people did not follow any of four formal definitions of minimal change on these problems. The new information and the contradiction it offered was not, for example, used to select a particular model of the initial belief state as a way of reconci ling the contradiction. The preferred revision was to retain only those initial sentences th at had the same, unambiguous truth value within and across both the initial and new info rmation sets. The study and results are presented in the context of certain logic-based for malizations of belief revision, syntactic and model-theoretic representations of belief stat es, and performance models of human deduction. Principles by which some types of sent ences might be more "entrenched" than others in the face of contradiction are also discuss ed from the perspective of induction and theory revision. (shrink)

Agent communication languages (ACLs) invoke speech act theory and define individual message types by reference to particular combinations of beliefs and desires of the speaker (feasibility preconditions). Even when the mental states are restricted to a small set of nested beliefs, it seems that there might be a very large number of different possible preconditions, and therefore a very large number of different message types. With some constraints on the mental attitude of the speaker, we enumerate the possible belief states (...) that could serve as preconditions for individual message types, and we identify how these states correspond to different possible message types. We then compare these with FIPA’s primitive message types. Our approach clarifies the nature of core message types in an ACL, and perhaps settles issues concerning just how many, and what types of, speech acts should be seen as primitive in such languages. (shrink)

Default reasoning occurs when the available information does not deductively guarantee the truth of the conclusion; and the conclusion is nonetheless correctly arrived at. The formalisms that have been developed in Artificial Intelligence to capture this mode of reasoning have suffered from a lack of agreement as to which non-monotonic inferences should be considered correct; and so Lifschitz 1989 produced a set of “Nonmonotonic Benchmark Problems” which all future formalisms are supposed to honor. The present work investigates the extent to (...) which humans follow the prescriptions set out in these Benchmark Problems. (shrink)

Psychologism in logic is the doctrine that the semantic content of logical terms is in some way a feature of human psychology. We consider the historically influential version of the doctrine, Psychological Individualism, and the many counter-arguments to it. We then propose and assess various modifications to the doctrine that might allow it to avoid the classical objections. We call these Psychological Descriptivism, Teleological Cognitive Architecture, and Ideal Cognizers. These characterizations give some order to the wide range of modern views (...) that are seen as psychologistic because of one or another feature. Although these can avoid some of the classic objections to psychologism, some still hold. (shrink)

Department of Computing Science Departments of Philosophy and Computing Science University of Alberta University of Alberta Edmonton, Alberta T6G 2H1 Edmonton, Alberta T6G 2H..

Average-NPs, such as the one in the title of this paper, have been claimed to be ‘linguistically identical’ to any other definite-NPs but at the same time to be ‘semantically inconsistent’ with these other definite-NPs. To some this is an ironclad proof of the irrelevance of semantics to linguistics. We argue that both of the initial claims are wrong: average-NPs are not ‘linguistically identical’ to other definite-NPs but instead show a number of interesting divergences, and we provide a plausible semantic (...) account for them that is not ‘semantically inconsistent’ with the account afforded other definite-NPs but in fact blends quite nicely with one standard account of the semantics for NPs. (shrink)

Ternary exclusive or is the (two valued) truth function that is true just in case exactly one of its three arguments is true. This is an interesting truth function, not definable in terms of the binary exclusive or alone, although the binary case is definable in terms of the ternary case. This article investigates the types of truth functions that can be defined by ternary exclusive or, and relates these findings to the seminal work of Emil Post.

A certain direction in cognitive science has been to try to “ground” public language statements in some species of mental representation. A central tenet of this trend is that communication – that is, public language – succeeds (when it does) because the elements of this public language are in some way correlated with mental items of both the speaker and the audience so that the mental state evoked in the audience by the use of that piece of public language is (...) the one that the speaker wanted to evoke. The “meaning”, therefore, of an utterance – and of the parts of an utterance, such as individual sentences and their parts, the individual words, etc. – is, in this view, some mental item. Successful communication requires that there be widespread agreement amongst speakers of the same public language as to the mental entities that are correlated with any particular public words. (shrink)

This article argues that the testimony of mystics provides an interesting potential source of evidence fortheism. The model of inference to the best explanation is utilized to analyze and assess mystics’ testimony.It is argued that the evidential value of the reports from mystics, both within the theistic tradition and fromwithout, ultimately proves weak.