Perceived size is a function of viewing distance, retinal images size, and various contextual cues such as linear perspective and the size and location of neighboring objects. Recently, we demonstrated that illusion magnitudes of classic visual size illusions may be greatly enhanced or reduced by adding dynamic elements. Specifically, a dynamic version of the Ebbinghaus illusion (classically considered a “size contrast” illusion) led to a greatly enhanced illusory effect, whereas a dynamic version of the Corridor illusion (a “size constancy” illusion) (...) led to a greatly diminished illusory effect. Although these differences may arise from the different processes underlying these illusions (size contrast vs. size constancy), the dynamic variants we tested in our previous work also differed in the nature of the dynamic elements; specifically, whereas the Dynamic Ebbinghaus included a moving target and inducers that changed size and position, the Dynamic Corridor only included a moving target on a static background. Here, we explore further dynamic versions of the Ebbinghaus illusion and the Corridor and Ponzo illusions by separately manipulating three types of dynamic elements: target motion, context translation, and dynamic changes in context. Across five experiments examining 21 dynamic illusory configurations, adding target motion or a dynamically changing context separately resulted in little-to-no illusory effect. In contrast, the combination of target motion and a dynamically changing context led to a robust size illusion, consistent with an interactive effect. However, illusory effects that exceeded the matched classic, static illusory configuration were only observed for the dynamic versions of the Ebbinghaus illusion and the Revealed Ponzo illusions, in which the contextual elements changed size. We conclude that the combination of target motion and a dynamically changing context are necessary to produce dynamic size illusions, but that enhancement above and beyond static illusions may be largely specific to size contrast effects. Our results have important implications for the integration of motion signals, a ubiquitous environmental stimulus, in the perception of object size. (shrink)

Region R Question: How many objects — entities, things — are contained in R? Ignore the empty space. Our question might better be put, 'How many material objects does R contain?' Let's stipulate that A, B and C are metaphysical atoms: absolutely simple entities with no parts whatsoever besides themselves. So you don't have to worry about counting a particle's top half and bottom half as different objects. Perhaps they are 'point-particles', with no length, width or breadth. Perhaps they are (...) extended in space without possessing spatial parts (if that is possible). Never mind. We stipulate that A, B and C are perfectly simple. We also stipulate that they are connected as follows. A and B are stuck together in such a way that when a force is applied to one of them, they move together 'as a unit'. Moreover, the two of them together exhibit behavior that neither would exhibit on its own — Perhaps they emit a certain sound, or glow in the dark — whereas C is.. (shrink)

We present a rigorous way to evaluate the visual perception of correlation in scatterplots, based on classical psychophysical methods originally developed for simple properties such as brightness. Although scatterplots are graphically complex, the quantity they convey is relatively simple. As such, it may be possible to assess the perception of correlation in a similar way. Scatterplots were each of 5.0 extent, containing 100 points with a bivariate normal distribution. Means were 0.5 of the range of the points, and standard deviations (...) 0.2 of this range. Precision was determined via an adaptive algorithm to find the just noticeable differences (jnds) in correlation, i.e., the difference between two side-by-side scatterplots that could be discriminated 75% of the time. Accuracy was measured by direct estimation, using reference scatterplots with fixed upper and lower values, with a test scatterplot adjusted so that its correlation appeared to be halfway between these. This process was recursively applied to yield several further estimates. Results of the discrimination tests show jnd(r) = k (1/b – r), where r is the Pearson correlation, and parameters 0 < k, b < 1. Integration yields a subjective estimate of correlation g(r) = ln(1 – br) / ln(1– b). The values of b found via discrimination closely match those found via direct estimation. As such, it appears that the perception of correlation in a scatterplot is completely described by two related performance curves, specified by two easily-measured parameters. (shrink)

Barbey & Sloman (B&S) advocate a dual-process (two-system) approach by comparing it with an alternative perspective (ecological rationality), claiming that the latter is unwarranted. Rejecting this alternative approach cannot serve as sufficient evidence for the viability of the former.

Traditionally, definitions of art have been concerned with the characteristics of the art object, the process of its creation or the reactions to it. in this paper i suggest to concentrate on the circumstances of the object's existence and the process by which it comes to exist. these circumstances, which differ in different periods and in different societies, are: (a) it's being declared, either by the artist, or by an exhibition catalogue, or by a collector, or by an art expert, (...) that x is art; (b) it's being understood that the said object in a museum, gallery, concert-hall, living room, is located or arranged or hung in such a way as to indicate that it is being exhibited as a work of art; (c) the said object's resembling objects previously recognized as being works of art; (d) the said declaration, referred to in (a), being made in the proper media--those recognized as having authority in the realm of art. (edited). (shrink)

The literature on thought experiments has been mainly concernedwith thought experiments that are directed at a theory, be it in aconstructive or a destructive manner. This has led somephilosophers to argue that all thought experiments can beformulated as arguments. The aim of this paper is to drawattention to a type of thought experiment that is not directed ata theory, but fulfills a specific function within a theory. Suchthought experiments are referred to as functional thoughtexperiments, and they are routinely used in (...) applied statistics. An example is given from frequentist statistics, where a thoughtexperiment is required to establish the probability space. It isconcluded that (a) not all thought experiments can be formulated asarguments, and (b) the role of thought experiments is more generaland more important to scientific reasoning than has previouslybeen recognized. (shrink)

Reid maintained that the perceptions that we obtain from the senses of smell, taste, hearing, and touch are ‘suggested’ by corresponding sensations. However, he made an exception for the sense of vision. According to Reid, our perceptions of the real figure, position, and magnitude of bodies are suggested by their visible appearances, which are not sensations but objects of perception in their own right. These visible appearances have figure, position, and magnitude, as well as ‘colour,’ and the standard view among (...) Reid scholars has been that Reid maintained that our perceptions of visible figure, position, and magnitude are also not suggested by any sensation. They are instead suggested by the material impression on the retina. Gideon Yaffe challenges the standard interpretation. According to Yaffe, Reid believed that our perceptions of visible figure are suggested by corresponding sensations, by sensations of colour. We defend the standard interpretation of Reid. According to Reid, there is no “local sign” in our sensations of colour. The same colour sensation can be associated with different positions on the visual field, and different colour sensations can be associated to the same position on the visual field. According to Reid, we only have evidence for a correlation between the image on the retina and the perception of visible figure. (shrink)

Bridging the gap between the world of science and the realm of the spiritual, B. Alan Wallace introduces a natural theory of human consciousness that has its roots in contemporary physics and Buddhism. Wallace's "special theory of ontological relativity" suggests that mental phenomena are _conditioned_ by the brain, but do not _emerge_ from it. Rather, the entire natural world of mind and matter, subjects and objects, arises from a unitary dimension of reality that is more fundamental than these dualities, as (...) proposed by Wolfgang Pauli and Carl Jung. To test his hypothesis, Wallace employs the Buddhist meditative practice of _samatha_, refining one's attention and metacognition, to create a kind of telescope to examine the space of the mind. Drawing on the work of the physicist John Wheeler, he then proposes a more general theory in which the participatory nature of reality is envisioned as a self-excited circuit. In comparing these ideas to the Buddhist theory known as the Middle Way philosophy, Wallace explores further aspects of his "general theory of ontological relativity," which can be investigated by means of _vipasyana_, or insight, meditation. Wallace then focuses on the theme of symmetry in reference to quantum cosmology and the "problem of frozen time," relating these issues to the theory and practices of the Great Perfection school of Tibetan Buddhism. He concludes with a discussion of the general theme of complementarity as it relates to science and religion. The theories of relativity and quantum mechanics were major achievements in the physical sciences, and the theory of evolution has had an equally deep impact on the life sciences. However, rigorous scientific methods do not yet exist to observe mental phenomena, and naturalism has its limits for shedding light on the workings of the mind. A pioneer of modern consciousness research, Wallace offers a practical and revolutionary method for exploring the mind that combines the keenest insights of contemporary physicists and philosophers with the time-honored meditative traditions of Buddhism. (shrink)

Metaphysicians of Meaning is the first book to challenge the accepted understanding of Russell's On Denoting and Frege's On Sense and Reference . Makin compares the work Russell did shortly before his famous essay "On Denoting" with the essay itself and argues that this comparison shows that the traditional view of the problem Russell was trying to solve is untenable. He then examines Frege's classic essay and argues that some of the less well-known views that Frege held have radical implications (...) for our understanding of this essay. (shrink)

When a person acts from ignorance, he is culpable for his action only if he is culpable for the ignorance from which he acts. The paper defends the view that this principle holds, not just for actions done from ordinary factual ignorance, but also for actions done from moral ignorance. The question is raised whether the principle extends to action done from ignorance about what one has most reason to do. It is tentatively proposed that the principle holds in full (...) generality. (shrink)

The theoretical physicist Paul Dirac rejected, explicitly on aesthetic grounds, a successful theory known as quantum electrodynamics (QED), which is the prototype for the family of theories known as quantum field theories (QFTs). Remarkably, the theoretical physicist Steven Weinberg, also largely on aesthetic grounds, supports QED and other QFTs. In order to evaluate these opposing aesthetic views a short introduction to the physical properties of QFTs is presented together with a detailed analysis of the aesthetic claims of Dirac and Weinberg. (...) It turns out that Dirac rejected QED, without regard to its success, because this theory fails to yield to what he perceived as beautiful mathematics, whereas Weinberg's support of QFTs is founded primarily on the physical concepts of the theories. In particular, he relies on symmetries that are the basis for the construction of the extremely successful current fundamental theories of particles physics. This success was decisive in leading to Weinberg's conviction of the beauty of QFTs. As a result of the evaluation of these approaches, the factors causing scientists to perceive a theory as being a fundamentally beautiful theory are discussed in detail. (shrink)

Bridging the gap between the world of science and the realm of the spiritual, B. Alan Wallace introduces a natural theory of human consciousness that has its roots in contemporary physics and Buddhism. Wallace's "special theory of ontological relativity" suggests that mental phenomena are _conditioned_ by the brain, but do not _emerge_ from it. Rather, the entire natural world of mind and matter, subjects and objects, arises from a unitary dimension of reality that is more fundamental than these dualities, as (...) proposed by Wolfgang Pauli and Carl Jung. To test his hypothesis, Wallace employs the Buddhist meditative practice of _samatha_, refining one's attention and metacognition, to create a kind of telescope to examine the space of the mind. Drawing on the work of the physicist John Wheeler, he then proposes a more general theory in which the participatory nature of reality is envisioned as a self-excited circuit. In comparing these ideas to the Buddhist theory known as the Middle Way philosophy, Wallace explores further aspects of his "general theory of ontological relativity," which can be investigated by means of _vipasyana_, or insight, meditation. Wallace then focuses on the theme of symmetry in reference to quantum cosmology and the "problem of frozen time," relating these issues to the theory and practices of the Great Perfection school of Tibetan Buddhism. He concludes with a discussion of the general theme of complementarity as it relates to science and religion. The theories of relativity and quantum mechanics were major achievements in the physical sciences, and the theory of evolution has had an equally deep impact on the life sciences. However, rigorous scientific methods do not yet exist to observe mental phenomena, and naturalism has its limits for shedding light on the workings of the mind. A pioneer of modern consciousness research, Wallace offers a practical and revolutionary method for exploring the mind that combines the keenest insights of contemporary physicists and philosophers with the time-honored meditative traditions of Buddhism. (shrink)

The paper examines the conditions under which we are responsible for actions performed under duress, focusing on a real case in which a soldier was compelled at gunpoint to participate in the massacre of civilian prisoners. The case stands for a class of cases in which the compelled act is neither clearly justified nor clearly excused on grounds of temporary incapacity, but in which it is nonetheless plausible that the agent is not morally blameworthy. The theoretical challenge is to identify (...) the excuse in such cases and to explain its basis. The paper argues that when mortal duress excuses in cases of this sort, it does so because the compelled act, though impermissible and freely chosen, nonetheless fails to manifest ‘an insufficiently good will’. The argument depends on a potentially controversial thesis in the ethics of concern, namely, that a thoroughly decent moral agent—someone who cares enough about morality and the values that underlie it—will not always be moved to do what he knows he ought to do. (shrink)

This chapter contains sections titled: 1 A Question about Composition 2 Some Answers 3 How Shall We Decide? 4 Common Sense and Unrestricted Composition 5 Common Sense and Compositional Nihilism 6 Compositional Nihilism and the Self 7 The Appeal to Science 8 Problem or Pseudoproblem? What To Do?

In this stimulating investigation, Gideon Freudenthal has linked social history with the history of science by formulating an interesting proposal: that the supposed influence of social theory may be seen as actual through its co herence with the process of formation of physical concepts. The reinterpre tation of the development of science in the seventeenth century, now widely influential, receives at Freudenthal's hand its most persuasive statement, most significantly because of his attention to the theoretical form which is charac (...) teristic. of classical Newtonian mechanics. He pursues the sources of the parallels that may be noted between that mechanics and the dominant philosophical systems and social theories of the time; and in a fascinating development Freudenthal shows how a quite precise method - as he descriptively labels it, the 'analytic-synthetic method' - which underlay the Newtonian form of theoretical argument, was due to certain interpretive premisses concerning particle mechanics. If he is right, these depend upon a particular stage of con ceptual achievement in the theories of both society and nature; further, that the conceptual was generalized philosophically; but, strikingly, Freudenthal shows that this concept-formation itself was linked to the specific social relations of the times of Newton and Hobbes. (shrink)

Gideon Yaffe presents a theory of criminal responsibility according to which child criminals deserve leniency not because of their psychological, behavioural, or neural immaturity but because they are denied the vote. He argues that full shares of criminal punishment are deserved only by those who have a full share of say over the law.

In what follows I try to show that Spinoza modelled his project of rational psychology, in some of its major respects, upon Descartes's metaphysics of matter. I argue further that, like Descartes, who paid for the rationalization of the science of matter the price of having to leave out of his description non-quantifiable qualities, so Spinoza left out of his psychology the non-rationalizable aspects of emotions, i.e. whatever in them could not be subsumed under common notions. He therefore was left (...) with the cognitive aspects of emotions, keeping outside of his report the inner feeling which accompanies them. Spinoza's psychology, I claim, disregards any non-cognitive aspect of emotions. (shrink)

Gideon Yaffe presents a ground-breaking work which demonstrates the importance of philosophy of action for the law. Many people are serving sentences not for completing crimes, but for trying to. Yaffe's clear account of what it is to try to do something promises to resolve the difficulties courts face in the adjudication of attempted crimes.

1. At its core, education is characterized by a preoccupation with the future. Despite the notable lack of agreement concerning the aims of education (e.g., social mobility, personal development, w...

Russell's On Denoting and Frege's On Sense and Reference are now widely held to be two of the founding papers of twentieth century philosophy and form the heart of the famous "linguistic turn". The Metaphysicians of Meaning is the first book to challenge the accepted secondary work on these two seminal papers, forcing us to reconsider the interpretation of these two vitally important works on meaning.

Descartes is well known as a mathematician and natural philosopher. However, none of Descartes's biographers has described the invitation he received in 1633 to fill a chair in theoretical medicine at the University of Bologna, or the fact that he was already sufficiently known and respected for his medical knowledge that the invitation came four years before his first publication. In this note I authenticate and contextualize this event, which I refer to as the ‘Bologna affair’. I transcribe the letter (...) written to the Bolognese Senate announcing efforts to bring Descartes to the university and explain the events that led to Descartes receiving the invitation. While many questions about the Bologna affair cannot be answered because of the paucity of the historical record, I conclude that the event invites us to consider again the larger historiographical issue of how best to integrate the history of medicine with the history of science and philosophy during the early modern period. (shrink)

This book provides an accessible introduction to spiritually-sensitive psychoanalysis, an analytic tradition characterized by sensitivity to the spiritual and religious dimensions of human life and oriented toward spiritual growth. Psychoanalysis has historically evinced severe suspicion to all ideas and ideals of religion and spirit. However, in recent years a new analytic approach is emerging, which recognizes faith and spirituality as crucial parts of a full, satisfying psychic life. This book explores the unique ways in which this approach refers to and (...) understands core analytic issues such as transference, interpretation, psychopathology, and psychic development. It goes on to expound the approach's understanding of the analytic relationship and the way it influences the spiritual person. It also discusses the tensions arising between this emerging school of thought and the existing body of psychoanalytic knowledge. Discussing freely and deeply its spiritual aspects and aspirations will enlighten analysts new to the emerging spiritually-sensitive tradition, as well as those who are more familiar with it, and who are looking for a comprehensive description of this fresh approach to analysis. (shrink)

It is widely supposed that every entity falls into one of twocategories: Some are concrete; the rest abstract. The distinction issupposed to be of fundamental significance for metaphysics andepistemology. This article surveys a number of recent attempts to sayhow it should be drawn.

State and Religion in Israel begins with a philosophical analysis of the two main questions regarding the role of religion in liberal states: should such states institute a 'Wall of Separation' between state and religion? Should they offer religious practices and religious communities special protection? Gideon Sapir and Daniel Statman argue that liberalism in not committed to Separation, but is committed to granting religion a unique protection, albeit a narrower one than often assumed. They then use Israel as a (...) case study for their conclusions. Although Israel is defined as a Jewish state, its Jewish identity need not be interpreted religiously, requiring that it subjects itself to the dictates of Jewish law. The authors test this view by critically examining important topics relevant to state and religion in Israel: marriage and divorce, the drafting of yeshiva students into the army, the character of the Sabbath and more. (shrink)

Nihilism, for Nietzsche, is the nothing that results from the devaluation of the highest values. There is widespread agreement with Nietzsche’s claim that the apostle Paul was the great devaluer of the values of the ancient world, even to the extent of breaking the history of the world in two. Yet the mode of Paul’s devaluating nihilism is contested. Using Nietzsche’s three types of nihilist, I frame this debate over Paul as giving us, respectively, Paul the reactive nihilist, Paul the (...) active nihilist and Paul the overman. I then read Agamben’s messianic Paul as a way to avoid the problem of nihilism tout court, which the two earlier accounts, despite releasing Paul from Nietzsche’s charge of passive nihilism, do not. I finish by arguing that while Agamben’s construction of the Pauline messianic vocation does indeed break with Nietzsche’s categories of nihilism, nihilism remains necessary to a genealogy of both Paul’s and Agamben’s messianism. (shrink)

In this paper I address Descartes’ use of analogy in physics. First, I introduce Descartes’ hypothetical reasoning, distinguishing between analogy and hypothesis. Second, I examine in detail Descartes’ use of analogy to both discover causes and add plausibility to his hypotheses—even though not always explicitly stated, Descartes’ practice assumes a unified view of the subject matter of physics as the extension of bodies in terms of their size, shape and the motion of their parts. Third, I present Descartes’ unique “philosophy (...) of analogy”, where the absence of analogy serves as a criterion for falsifying proposed explanations in physics. I conclude by defending Descartes’ philosophy of analogy by appeal to the value scientists assign to simplicity in their explanations. (shrink)

As part of the preparations to establish a population-based biobank in a large Israeli health organization, we aimed to investigate through focus groups the knowledge, perceptions and attitudes of insured Israelis, toward biobanking, and then, after input from focus groups’ participants, to empirically assess the impact of a revised recruitment process on recruitment rates. 1) Six Focus group discussions were conducted with individuals who had routine blood laboratory tests taken in the last 2 years. 2) After addressing the issues raised (...) in the focus groups and revising the recruitment process, individuals undergoing routine blood tests in phlebotomy clinics were invited to participate in the future biobank. Six Focus group discussions were conducted with individuals who had routine blood laboratory tests taken in the last 2 years. After addressing the issues raised in the focus groups and revising the recruitment process, individuals undergoing routine blood tests in phlebotomy clinics were invited to participate in the future biobank. At the outset of the focus groups there was an overall positive response to the prospect of a population-based biobank. Concerns revolved around infringement on privacy, fears of the “big brother”, and anxiety about inequality. Reaction to the language of the informed consent document revolved around concerns over ability to maintain anonymity, to withdraw consent, involvement of commercial entities, and the general tenor of the informed consent, which was perceived as legalistic and unilateral. In general, the longer participants were exposed to discussion about the biobank, the less likely they were to consent to sign in. Overall, only 20% of the 60 participants stated they would agree to sign in by the end of the 2 hour group session. The feedback obtained from the focus groups was used in the second stage of the study. A team of recruiters received extensive training to enable fruitful discussion and a detailed explanation to questions and concerns raised during the recruitment process. During the second stage of the study, after revising the consent form and training recruiters, a 53% consent rate was observed among 10,262 participants, more than 4 fold higher than estimated at the focus group stage. The qualitative focus group research helped identify important perceptions and concerns, which were subsequently addressed in the revised consent form and in the discussion the recruiters had with potential biobank donors. (shrink)

This study investigates the literary references to orphans in writings amongst the Qumran texts that were written in Hebrew and can be associated with the sectarian Qumran movement. The study focuses on passages where forms of the word -•-• are used. These include the Damascus Document, Hodayot and Barkhi Nafshiª. The investigation concludes that the references to orphans in these passages do not have the same rhetorical functions. In CD 6, the wordings of authoritative scriptures are adapted to portray orphans (...) and widows as the victims of wrongdoing. In 1QHª and 4Q434, however, orphans are mentioned in hymns that praise the Lord's positive treatment of needy people. (shrink)

This small volume points its readers to a simple, broadly agreeable concept that upon further thought offers us the fabled "Archimedes Point": the most grounded, indefinitely durable, immovable hinge to leverage our lives around it. "Unbound Ignorance" is a philosophy that recasts religion, and provides a modern guide to our strategic life decisions, as well as offering daily help vis-à-vis the growing complexities of an ever more crowded, more endangered planet where information technology keeps redefining our possibilities, and limitations, and (...) advanced biology fogs up our sense of identity. (shrink)

This title was first published in 2002. This collection of essays aims to present a wide range of interpretations of central themes in Spinoza's philosophy. Philosophical interpretations of Spinoza divide into three general categories. The first sets Spinoza within what is taken to be his historical context. Special emphasis is laid here on aspects of his teaching that seem to bear the influence of Spinoza's own education (and self-education), either through concepts assimilated into his own thinking, or those he undertook (...) to refute and displace. A second interpretative approach uses analytical tools in an attempt to reconstruct Spinozistic issues and theories critically. Finally, there are philosophers who explore Spinoza's texts in their own terms, attempting to present a coherent picture of one or more aspects of Spinoza's teaching. Given the broad span of issues with which Spinoza deals, the latter is often the most difficult track to follow. The 25 articles in this collection exemplify these three attitudes to Spinoza interpretation, though most avail themselves of more than one. In making the selection the editors preferred studies that treat their subject as a viable, endurable philosophical issue, whether the writer accepts Spinoza's presentation or highlights his difficulties. On each issue the articles critically analyze the texts, rather than simply portraying the Spinozistic ideas they express. (shrink)