Keller & Miller (K&M) briefly mention and promptly dismiss the idea that genes for harmful mental disorders may confer certain advantages to affected individuals. However, the authors fail to consider that the same genes (in low doses or reduced penetrance) may be adaptive for relatives, and that this may in part explain why they are retained in the gene pool. (Published Online November 9 2006).

An intervening gestural stage in language evolution, though seductive, is ultimately redundant, and is not necessarily supported by modern human or chimp behaviour. The findings and arguments offered from mirror neurones, anatomy, and lateralization are capable of other interpretations, and the manipulative dextrality of chimps is under-recognized. While language certainly possesses certain unique properties, its roots are ancient.

Adaptation to right-shifting prisms improves left neglect for mental number line bisection. This study examined whether adaptation affects the mental number line in normal participants. Thirty-six participants completed a mental number line task before and after adaptation to either: left-shifting prisms, right-shifting prisms or control spectacles that did not shift the visual scene. Participants viewed number triplets (e.g. 16, 36, 55) and determined whether the numerical distance was greater on the left or right side of the inner number. Participants demonstrated (...) a leftward bias (i.e. overestimated the length occupied by numbers located on the left side of the number line) that was consistent with the effect of pseudoneglect. The leftward bias was corrected by a short period of visuomotor adaptation to left-shifting prisms, but remained unaffected by adaptation to right-shifting prisms and control spectacles. The findings demonstrate that a simple visuomotor task alters the representation of space on the mental number line in normal participants. (shrink)

While explaining a large proportion of any variance, accounts of the speed and accuracy of targetting movements use techniques (e.g., log transforms) that typically reduce variability before ''explaining'' the data. Therefore the predictive power of such accounts are important. We consider whether Plamondon's model can account for kinematics of targetting movements of clinical populations.

In lieu of an abstract, here is a brief excerpt of the content:"ALL EXISTING IS THE ACTION OF GOD": THE PHILOSOPHICAL THEOLOGY OF DAVID BRAINE DAVID BRADSHAW University ofTexas at Austin Austin, Texas Thou lovest all the things that are, and abhorrest nothing which thou hast made: for never wouldest thou have made any thing, if thou hadst hated il And how could any thing have endured, if it had not been thy will? or been preserved, if not called (...) by thee? But thou sparest all: for they are thine, 0 Lord, thou lover of souls. Wisdom 11:24-26 He is not far from every one of us; for in Him we live, and move, and have our being. Acts 17:27-28 I T HAS long been traditional to regard God as upholding all things in existence. This belief is known as the doctrine of continuous creation; it is a doctrine widely shared by Jews, Christians, and Moslems, and was first clearly articulated by St. Augustine.1 The phrase "continuous creation" can be misleading, for there is more to the doctrine than simply the extension of God's creative act through time. If that were all that is at stake, we would not need to revise our ordinary notion of the creator as craftsman or artist; we might think of God as like a painter who 1 Augustine, De Genesi ad Litteram iv.12. The history of the development of this doctrine has yet to be written, but important sources include Timaeus 4lab; Philo of Alexandria, De Providentia i.7; Colossians 1:17, Hebrews 1:3; John of Damascus, De Fide Orthodoxa i.3; Aquinas, Summa theologiae I, q. 104, a. 1. See also David Winston, Philo of Alexandria (New York: Paulist Press, 1981), 14-17; G. L. Prestige, God in Patristic Thought (London: S.P.C.K., 1964), 31-36; Richard Sorabji, Time, Creation,-and the Continuum (Ithaca: Cornell, 1983), 303-304. 379 380 DAVID BRADSHAW never stops adding new scenes, or a writer continually elaborating his story. That picture will not do. Ifthe painter were to cease painting, what he has made up to that point would remain in existence, whereas it is precisely the ability to stand on its own that the doctrine of continuous creation seeks to deny of what is made. Nor does anything in the relation of artisan to artifact properly convey the special intimacy and presence that the act of continuous creation is supposed to establish between God and creatures. A painting or a story does not "live and move and have its being" in the one who fashions it-nor would even a living and thinking creature, if the manner of its making were solely that of an artisan. These shortcomings raise the question of whether we should seek to replace the image of artisan and artifact with one that is more dynamic. We might think of God as like a singer and of what is made as His song, or of God as like a dancer and of what is made as His dance. By envisioning the act of creation as a "doing" rather than a "making," analogies of this type more adequately indicate the continuing ontological dependence ofcreation on Creator. They also draw our attention to a mode of presence radically different from that of one body to another, the presence of an agent "within" his own actions. They may thus bring us closer to what St. Paul presumably has in mind in the passage quoted from Acts. On the other hand, they have faults of their own, for they are hard to reconcile with creaturely freedom and the reality of secondary causation. How could any kind of "doing" act contrary to the will of its doer? Indeed, how could it act at all? Actions are not causal agents; a song does not act in its own right, but is at best an instrument of the one who sings it. So it would seem that, taken to their logical conclusion, analogies such as that of the singer and his song lead to the denial of both creatures' freedom and their causal efficacy. There have been thinkers in each of the religious traditions mentioned who have been willing to accept these... (shrink)

This chapter traces the historical and conceptual development of the idea of the continuum and the allied concept of real number. Particular attention is paid to the idea of infinitesimal, which played a key role in the development of the calculus during the seventeenth and eighteenth centuries, and which has undergone a revival in the later twentieth century.

"A sequel to Pollock's How to Build a Person, this volume builds upon that theoretical groundwork for the implementation of rationality through artificial ...

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

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.

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

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

Pollock argues that theories of ideal rationality are largely irrelevant to the decision making of real agents. Thinking about Acting aims to provide a theory of "real rationality.".

Now in a new edition, this exceptionally successful survey text introduces the faith, belief, and practice of Islam from its earliest origins up to its contemporary resurgence. John L. Esposito, an internationally renowned expert on Islam, traces the development of this dynamic faith and its impact on world history and politics. The fourth edition features updated and expanded coverage of Islam and politics; more extensive treatment of early Islam; an enhanced art program; a new appendix; and a free 6-month (...) subscription to Oxford Islamic Studies Online edited by John L. Esposito. (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)

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

This exceptionally successful survey text introduces the teachings and practice of Islam from its earliest origins up to its contemporary practice. John L. Esposito, an internationally renowned expert on Islam, traces the development of Islam and its impact on world history and politics.Lucidly written and expansive in scope, Islam: The Straight Path, Updated Fifth Edition, provides keen insight into one of the world's least understood religions. It is ideally suited for use in courses on Islam, world religions, comparative religions, (...) and Middle East history and culture.A FREE 6-month subscription to Oxford Islamic Studies Online, edited by John L. Esposito, is included with the purchase of every new copy of this text. (shrink)

The usual meaning of the word continuous is “unbroken” or “uninterrupted”: thus a continuous entity —a continuum—has no “gaps.” We commonly suppose that space and time are continuous, and certain philosophers have maintained that all natural processes occur continuously: witness, for example, Leibniz's famous apothegm natura non facit saltus—“nature makes no jump.” In mathematics the word is used in the same general sense, but has had to be furnished with increasingly precise definitions. So, for instance, in the later 18th century (...) continuity of a function was taken to mean that infinitesimal changes in the value of the argument induced infinitesimal changes in the value of the function. With the abandonment of infinitesimals in the 19th century this definition came to be replaced by one employing the more precise concept of limit. (shrink)

Reliabilist theories propose to analyse epistemic justification in terms of reliability. This paper argues that if we pay attention to the details of probability theory we find that there is no concept of reliability that can possibly play the role required by reliabilist theories. A distinction is drawn between the general reliability of a process and the single case reliability of an individual belief, And it is argued that neither notion can serve the reliabilist adequately.