When people speak of ‘the law of the jungle’, they usually mean unions restrained and ruthless competition, with everyone out solely for his own advantage. But the phrase was coined by Rudyard Kipling, in The Second Jungle Book, and he meant something very different. His law of the jungle is a law that wolves in a pack are supposed to obey. His poem says that ‘the strength of the Pack is the Wolf, and the strength of the Wolf is the (...) Pack’, and it states the basic principles of social co-operation. Its provisions are a judicious mixture of individualism and collectivism, prescribing graduated and qualified rights for fathers of families, mothers with cubs, and young wolves, which constitute an elementary system of welfare services. Of course, Kipling meant his poem to give moral instruction to human children, but he probably thought it was at least roughly correct as a description of the social behaviour of wolves and other wild animals. Was he right, or is the natural world the scene of unrestrained competition, of an individualistic struggle for existence? (shrink)

In this book Pollock deals with the subject of probabilistic reasoning, making general philosophical sense of objective probabilities and exploring their ...

For this second edition, the editors have returned to Austin's original lecture notes, amending the printed text where it seemed necessary.

This new edition of the classic Contemporary Theories of Knowledge has been significantly updated to include analyses of the recent literature in epistemology.

Pollock describes an exciting theory of rationality and its partial implementation in OSCAR, a computer system whose descendants will literally be persons.

The author poses a question: when a person has a thought, what is it that determines what thought he is having? and, equivalently, what is it that determines what thought he is having. looking for an answer he sketches some general aspects of the problems involved in answering these questions, like the mind/body problem, for example. his conclusion is that the posed questions should be set against the background assumption that thoughts are just internal physical occurrences, and that thoughts are (...) categorized in the same way other mental occurrences are categorized. so the author categorizes them in terms of their introspectible characteristics and in terms of "that" clauses. these classifications can be understood as describing thought in terms of their place in the rational architecture. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:POMPONAZZI'S CRITIQUE OF AQUCNAS'S ARGUMENTS FOR THE :IMMORTALITY OF THE SOUL JOHN L. TRELOAR, S.J. Marquette University Milwaukee, Wisconsin I. lntJroWi.wtion IN 'JiHE COURSE of hls discussion on the immortality of the soul, Pietro Pomponazzi systematically critiques the Pfatonic, Avel'IJ'IOist, and Thomistic positions concerning this perennial problem iin the philosophy of human nature. Pomponiazzi's Tractatrus de irnrmortalitate animae 1 is inteirestin!g from three methodological standpoints: (1) the criteria (...) Pomponazzi uses to ev:aluate the various positions, (2) Pomponazzi 's attempt to redefine the probtlem of immortality in fo:gica;l terms, and (8) his analysis of previous positions. In this Renaissance treatise one finds an excellent example of the infliuence of method on the dev:elopment of an idea. This article wiihl eX'amine and ev:aluate Pomponazzi's analy,s:i.s of Thomas A:quiinas's aJ.'gument for the immortality of the soul showing how Pomponazzi''S irefo:rnnula;bion puts the Thomistic argument in a context completely differoort fmm whait Thomas himself intended. Although this ipaper treats a historical pr01blem, its mai:i.n oibject is to show how the fo:tmulation of phifosophical critema and,questions influences how one handles a topic 1 and 1 The standard Latin text of the Tractatus is: Petrus Pomponatus, Tractatus de immortalitate animae, ed. Gianfranco Morra (Bologna: Nanni and Fiammeghi, 1954). The English translations used in this article are from Ernst Cassirer et al., eds. The Renaissance Philosophy of Man (Chicago: University of Chicago Press, 1948). A complete translation of the Tractatus by William Henry Hay II, revised by John Herman Randall, Jr., and annotated by Paul Oskar Kristeller, appears on pp. 280-381. 458 454 JOHN L. TRELOAR, S.J, what one says about prewous solutions to a problem. This article, then, studies a rphi1osophica1l methodology as much as it arppraises Pomrponazzi and Aquinas.2 Eady in the Tractatus de immortalitate animae Pomponazzi 'es'tia;bJishes the dual cr1iter:ia for judging the adequacy of au p!i.'evious arguments ]or the immortaJl~ty of the,soul. First, "Leaving aside revefaition and miracles, and remaining entirely within natmal limits," 3 what can be said concerrning the immortality of the soul? Second, "what... was Aristotle's opin~on on the same question "?4 These criteria function as the limiting conditions that determine the adequacy of any argument :for immortality; Pomponazzi employs these criteria riJgm~ously to test whether previious a1rguments are adeqU'ate. Pomponazzi's attempt to l'edefine immo:rtality in strictly 1ogicail terms also influences his critique of pl'evious authoi's :and his own generail condusions. He picks u:p Fieino'.s notion that the human being is of an ambiguous nature, that is, part spirit 1and pa:rt oorpore1 al.5 This, of course, is new neither with Ficino nor with Pomponazzi, for the concept of a twofold nature goes hack at least as ia1· as Plwto. Plomponazzi',s use of 1this concept of a twofold nature, however, is unique. He casts the whole 2 In his book Renaissance Thought and Its Sources (New York: Columbia University Press, 1979), Paul Oskar Kristeller says, "Among the many problems and concepts that have occupied the thinkers of the past, and especially those of the Renaissance, the doctrine of immortality seems especially remote from the discussions and concerns of our time" (p. 181). He argues in this essay that, "The problem is still with us, and we may hope that it may yet lead to new answers that are more in accordance with our knowledge and our sensibilities than those transmitted to us by the thinkers of the past, especially those of the fifteenth and sixteenth centuries" (p. 196). s "Primum scilicet, quid, revelationibus et miraculis semotis, persistendoque pure infra limites naturales, hac in re sentis." Immortalitate, p. 36 (p. 281). All references to the Traatatus de immortalitate animae will appear in this form. The first page reference is to the Latin text and the page number in parentheses is to the English translation cited above. 4 "Alterum vero, quamnam sententiam Aristotelis in eadem materiam fuisse censes." Imrnortalitate, p. 36 (p. 281). 5 See Marsilius Ficino, " Five Questions Concerning the... (shrink)

Princeton University Press, 984. This book is out of print, but can be downloaded as a pdf file (3.9 MB).

Princeton University Press, 1974. This book is out of print, but can be downloaded as a pdf file (5 MB).

There was a long tradition in philosophy according to which good reasoning had to be deductively valid. However, that tradition began to be questioned in the 1960’s, and is now thoroughly discredited. What caused its downfall was the recognition that many familiar kinds of reasoning are not deductively valid, but clearly confer justification on their conclusions. Here are some simple examples.

The traditional paradigm for research relating to the Fishbeinian model of intention is described and some of its limitations are discussed. A structuralist interpretation of the Fishbeinian equation is then put forward from the standpoint of the ethogenic perspective advocated by Harré and Secord. Each component of the Fishbeinian equation is assumed to be the symbolic expression of an account which is attributable to the agent and relates to the act in question. The equation as a whole is then interpreted (...) as a rule governing the intelligibility of a cluster of such accounts. Empirical studies are reported which examine the consequences of transgressing the rule of intelligibility and which use instances of transgression as a means to theoretical development. In this development, the importance of the executive facet of action is acknowledged by utilising Abelson's schemes for the representation of plans. The paper concludes with a speculative discussion as to how this radically different conceptual and methodological approach might be used in future research on the intention-behaviour relation. (shrink)

In this paper I reflect on the nature of mathematical beauty, and examine the connections between mathematics and the arts. I employ Plutarch’s distinction between the intelligible and the sensible, to compare the beauty of mathematics with the beauties of music, poetry and painting. While the beauty of mathematics is almost exclusively intelligible, and the beauties of these arts primarily sensible, it is pointed out that the latter share with mathematics a certain kind of intelligible beauty. The paper also contains (...) reflections on the formal beauty and timelessness of mathematics, beauty as richness flowing from simplicity, form and content in mathematics, and mathematics and fiction. It concludes with some remarks on the question of why mathematical beauty is so little appreciated by non-mathematicians. (shrink)

Traditionally, there have been two methods of deriving the theorems of geometry: the analytic and the synthetic. While the analytical method is based on the introduction of numerical coordinates, and so on the theory of real numbers, the idea behind the synthetic approach is to furnish the subject of geometry with a purely geometric foundation in which the theorems are then deduced by purely logical means from an initial body of postulates. The most familiar examples of the synthetic geometry are (...) classical Euclidean geometry and the synthetic projective geometry introduced by Desargues in the 17th century and revived and developed by Carnot, Poncelet, Steiner and others during the 19th century. The power of analytic geometry derives very largely from the fact that it permits the methods of the calculus, and, more generally, of mathematical analysis, to be introduced into geometry, leading in particular to differential geometry (a term, by the way, introduced in 1894 by the Italian geometer Luigi Bianchi). That being the case, the idea of a “synthetic” differential geometry seems elusive: how can differential geometry be placed on a “purely geometric” or “axiomatic” foundation when the apparatus of the calculus seems inextricably involved? To my knowledge there have been two attempts to develop a synthetic differential geometry. The first was initiated by Herbert Busemann in the 1940s, building on earlier work of Paul Finsler. Here the idea was to build a differential geometry that, in its author’s words, “requires no derivatives”: the basic objects in Busemann’s approach are not differentiable manifolds, but metric spaces of a certain type in which the notion of a geodesic can be defined in an intrinsic manner. I shall not have anything more to say about this approach. The second approach, that with which I shall be concerned here, was originally proposed in the 1960s by F. W. Lawvere, who was in fact striving to fashion a decisive axiomatic framework for continuum mechanics.. (shrink)

Arthur Hatto was an outstanding scholar of German studies at the University of London who formulated a theory of epic heroic poetry. He was recruited to work in the cryptographic bureau at the Foreign Office in February 1939 and afterwards worked at Bletchley Park. Later, in order to study epic poetry, Hatto taught himself Russian and Kirghiz. He was elected as a Senior Fellow of the British Academy in 1991. Obituary by John L. Flood.

A weak form of intuitionistic set theory WST lacking the axiom of extensionality is introduced. While WST is too weak to support the derivation of the law of excluded middle from the axiom of choice, we show that beefing up WST with moderate extensionality principles or quotient sets enables the derivation to go through.

Many studies of primate vocalization have been undertaken to improve our understanding of the evolution of language. Perhaps, for this reason, investigators have focused on calls that were thought to carry symbolic information about the environment. Here I suggest that even if these calls were in fact symbolic, there were independent reasons to question this approach in the first place. I begin by asking what kind of communication system would satisfy a species’ biological needs. For example, where animals benefit from (...) living in large groups, I ask how members would need to communicate to keep their groups from fragmenting. In this context, I discuss the role of social grooming and “close calls,” including lip-smacking and grunting. Parallels exist in human societies, where information is exchanged about all kinds of things, often less about the nominal topic than the communicants themselves. This sort of indexical information is vital to group living, which presupposes the ability to tolerate, relate to, and interact constructively with other individuals. Making indexical communication the focus of comparative research encourages consideration of somatic and behavioral cues that facilitate relationships and social benefits, including cooperation and collaboration. There is ample room here for a different and potentially more fruitful approach to communication in humans and other primates, one that focuses on personal appraisals, based on cues originating with individuals, rather than signals excited by environmental events. (shrink)

The objective of this book is to produce a theory of rational decision making for realistically resource-bounded agents. My interest is not in “What should I do if I were an ideal agent?”, but rather, “What should I do given that I am who I am, with all my actual cognitive limitations?” The book has three parts. Part One addresses the question of where the values come from that agents use in rational decision making. The most comon view among philosophers (...) is that they are based on preferences, but I argue that this is computationally impossible. I propose an alternative theory somewhat reminiscent of Bentham, and explore how human beings actually arrive at values and how they use them in decision making. Part Two investigates the knowledge of probability that is required for decision-theoretic reasoning. I argue that subjective probability makes no sense as applied to realistic agents. I sketch a theory of objective probability to put in its place. Then I use that to define a variety of causal probability and argue that this is the kind of probability presupposed by rational decision making. So what is to be defended is a variety of causal decision theory. Part Three explores how these values and probabilities are to be used in decision making. In chapter eight, it is argued first that actions cannot be evaluated in terms of their expected values as ordinarily defined, because that does not take account of the fact that a cognizer may be unable to perform an action, and may even be unable to try to perform it. An alternative notion of “expected utility” is defined to be used in place of expected values. In chapter nine it is argued that individual actions cannot be the proper objects of decision-theoretic evaluation. We must instead choose plans, and select actions indirectly on the grounds that they are prescribed by the plans we adopt. However, our objective cannot be to find plans with maximal expected utilities. Plans cannot be meaningfully compared in that way. (shrink)