This article is concerned with frege's "sinn und bedeutung", As an examination of (1) a statement and analysis of frege's argument, And (2) specification and justification of a meaning of 'sense' which fits the data of frege's discussion and does not make 'sense' a subsistent entity. (staff).

The thesis of this paper is that the Tractatus and the Investigations can be related as follows. Wittgenstein attempted in the Tractatus to avoid the conceptual realism of Frege and Russell with respect to propositions. He solved his problem by developing the picture-theory of language. This solution assumed that the units of language are words which arc names of simple objects. Because of this assumption the solution has the undesirable consequence that examples oi genuine names, atomic facts and atomic propositions (...) cannot be given although their existence is logically required by the solution. Wittgenstein had, therefore, eventually to examine the idea of a name. Thus the Philosophical Investigations in which this examination is conducted. (shrink)

This article examined the effects of body–object interaction (BOI) on semantic processing. BOI measures perceptions of the ease with which a human body can physically interact with a word's referent. In Experiment 1, BOI effects were examined in 2 semantic categorization tasks (SCT) in which participants decided if words are easily imageable. Responses were faster and more accurate for high BOI words (e.g., mask) than for low BOI words (e.g., ship). In Experiment 2, BOI effects were examined in a semantic (...) lexical decision task (SLDT), which taps both semantic feedback and semantic processing. The BOI effect was larger in the SLDT than in the SCT, suggesting that BOI facilitates both semantic feedback and semantic processing. The findings are consistent with the embodied cognition perspective (e.g., Barsalou's, 1999, Perceptual Symbols Theory), which proposes that sensorimotor interactions with the environment are incorporated in semantic knowledge. (shrink)

The article proceeds upon the assumption that the beliefs and degrees of belief of rational agents satisfy a number of constraints, including: consistency and deductive closure for belief sets, conformity to the axioms of probability for degrees of belief, and the Lockean Thesis concerning the relationship between belief and degree of belief. Assuming that the beliefs and degrees of belief of both individuals and collectives satisfy the preceding three constraints, I discuss what further constraints may be imposed on the aggregation (...) of beliefs and degrees of belief. Some possibility and impossibility results are presented. The possibility results suggest that the three proposed rationality constraints are compatible with reasonable aggregation procedures for belief and degree of belief. (shrink)

The present article illustrates a conflict between the claim that rational belief sets are closed under deductive consequences, and a very inclusive claim about the factors that are sufficient to determine whether it is rational to believe respective propositions. Inasmuch as it is implausible to hold that the factors listed here are insufficient to determine whether it is rational to believe respective propositions, we have good reason to deny that rational belief sets are closed under deductive consequences.

In this study, we examined the effects of emotional experience, a relatively new dimension of emotional knowledge that gauges the ease with which words evoke emotional experience, on abstract word processing in the Stroop task. In order to test the context-dependency of these effects, we accentuated the saliency of this dimension in Experiment 1A by blocking the stimuli such that one block consisted of the stimuli with the highest emotional experience ratings and the other block consisted of the stimuli with (...) the lowest emotional experience ratings. We attenuated the saliency of this dimension in Experiment 1B by intermixing the stimuli. We observed slower color naming performance for words with higher emotional experience ratings only in Experiment 1A, suggesting that the dimension of emotional experience is an aspect of semantic representation for abstract words but that its influence can be modulated by context. We interpret these results more generally using Vigliocco, Meteyard, Andrews, and Kousta's framework of semantic representation, and more specifically using Cohen, Dunbar, and McClelland's model of Stroop task performance. (shrink)

In attempting to form rational personal probabilities by direct inference, it is usually assumed that one should prefer frequency information concerning more specific reference classes. While the preceding assumption is intuitively plausible, little energy has been expended in explaining why it should be accepted. In the present article, I address this omission by showing that, among the principled policies that may be used in setting one’s personal probabilities, the policy of making direct inferences with a preference for frequency information for (...) more specific reference classes yields personal probabilities whose accuracy is optimal, according to all proper scoring rules, in situations where all of the relevant frequency information is point-valued. Assuming that frequency information for narrower reference classes is preferred, when the relevant frequency statements are point-valued, a dilemma arises when choosing whether to make a direct inference based upon relatively precise-valued frequency information for a broad reference class, R, or upon relatively imprecise-valued frequency information for a more specific reference class, R*. I address such cases, by showing that it is often possible to make a precise-valued frequency judgment regarding R* based on precise-valued frequency information for R, using standard principles of direct inference. Having made such a frequency judgment, the dilemma of choosing between and is removed, and one may proceed by using the precise-valued frequency estimate for the more specific reference class as a premise for direct inference. (shrink)

There are numerous formal systems that allow inference of new conditionals based on a conditional knowledge base. Many of these systems have been analysed theoretically and some have been tested against human reasoning in psychological studies, but experiments evaluating the performance of such systems are rare. In this article, we extend the experiments in [19] in order to evaluate the inferential properties of c-representations in comparison to the well-known Systems P and Z. Since it is known that System Z and (...) c-representations mainly differ in the sorts of inheritance inferences they allow, we discuss subclass inheritance and present experimental data for this type of inference in particular. (shrink)

In previous work, we studied four well known systems of qualitative probabilistic inference, and presented data from computer simulations in an attempt to illustrate the performance of the systems. These simulations evaluated the four systems in terms of their tendency to license inference to accurate and informative conclusions, given incomplete information about a randomly selected probability distribution. In our earlier work, the procedure used in generating the unknown probability distribution (representing the true stochastic state of the world) tended to yield (...) probability distributions with moderately high entropy levels. In the present article, we present data charting the performance of the four systems when reasoning in environments of various entropy levels. The results illustrate variations in the performance of the respective reasoning systems that derive from the entropy of the environment, and allow for a more inclusive assessment of the reliability and robustness of the four systems. (shrink)

On July 2, 2001, a medical milestone was reached when Robert Tools received a total artificial heart implant at Jewish Hospital in Louisville, Kentucky. Tools was implanted with an AbioCor artificial heart, one of several brands of new-generation artificial hearts that has been approved by the U.S. Food and Drug Administration for clinical trial. The AbioCor heart was developed by Abiomed of Danvers, Massachusetts.Following the surgery, physicians were guardedly enthusiastic about the device and optimistic about the patient’s future. Tools, 59, (...) has had a history of numerous heart attacks and by-pass surgery, as well as diabetes and kidney problems. He met the requirements of the AbioCor protocol because he was not a candidate for transplant, death was otherwise probable within thirty days, and other interventions were deemed ineffective. Researchers hope that strengthening his heart function will result in increased function of his other vital organs, thus prolonging the patient's life and increasing his energy. But because the device is experimental, nothing can be promised. (shrink)

An agent’s belief in a proposition, E0, is justified by an infinite regress of deferred justification just in case the belief that E0 is justified, and the justification for believing E0 proceeds from an infinite sequence of propositions, E0, E1, E2, etc., where, for all n ≥ 0, En+1 serves as the justification for En. In a number of recent articles, Atkinson and Peijnenburg claim to give examples where a belief is justified by an infinite regress of deferred justification. I (...) argue here that there is no reason to regard Atkinson and Peijnenburg’s examples as cases where a belief is so justified. My argument is supported by careful consideration of the grounds upon which relevant beliefs are held within Atkinson and Peijnenburg’s examples. (shrink)

It is well known that there are, at least, two sorts of cases where one should not prefer a direct inference based on a narrower reference class, in particular: cases where the narrower reference class is gerrymandered, and cases where one lacks an evidential basis for forming a precise-valued frequency judgment for the narrower reference class. I here propose (1) that the preceding exceptions exhaust the circumstances where one should not prefer direct inference based on a narrower reference class, and (...) (2) that minimal frequency information for a narrower (non-gerrymandered) reference class is sufficient to yield the defeat of a direct inference for a broader reference class. By the application of a method for inferring relatively informative expected frequencies, I argue that the latter claim does not result in an overly incredulous approach to direct inference. The method introduced here permits one to infer a relatively informative expected frequency for a reference class R', given frequency information for a superset of R' and/or frequency information for a sample drawn from R'. (shrink)

On July 2, 2001, a medical milestone was reached when Robert Tools received a total artificial heart implant at Jewish Hospital in Louisville, Kentucky. Tools was implanted with an AbioCor artificial heart, one of several brands of new-generation artificial hearts that has been approved by the U.S. Food and Drug Administration for clinical trial. The AbioCor heart was developed by Abiomed of Danvers, Massachusetts.Following the surgery, physicians were guardedly enthusiastic about the device and optimistic about the patient’s future. Tools, 59, (...) has had a history of numerous heart attacks and by-pass surgery, as well as diabetes and kidney problems. He met the requirements of the AbioCor protocol because he was not a candidate for transplant, death was otherwise probable within thirty days, and other interventions were deemed ineffective. Researchers hope that strengthening his heart function will result in increased function of his other vital organs, thus prolonging the patient's life and increasing his energy. But because the device is experimental, nothing can be promised. (shrink)

I here aim to show that a particular approach to the problem of induction, which I will call “induction by direct inference”, comfortably handles Goodman’s problem of induction. I begin the article by describing induction by direct inference. After introducing induction by direct inference, I briefly introduce the Goodman problem, and explain why it is, prima facie, an obstacle to the proposed approach. I then show how one may address the Goodman problem, assuming one adopts induction by direct inference as (...) an approach to the problem of induction. In particular, I show that a relatively standard treatment of what some have called the “Reference Class problem” addresses the Goodman Problem. Indeed, plausible and relatively standard principles of direct inference yield the conclusion that the Goodman inference (involving the grue predicate) is defeated, so it is unnecessary to invoke considerations of ‘projectibility’ in order to address the Goodman problem. I conclude the article by discussing the generality of the proposed approach, in dealing with variants of Goodman’s example. (shrink)

Formal and empirical work on the Wisdom of Crowds has extolled the virtue of diverse and independent judgment as essential to the maintenance of ‘wise crowds’. In other words, com-munication and imitation among members of a group may have the negative effect of decreasing the aggregate wisdom of the group. In contrast, it is demonstrable that certain meta-inductive methods provide optimal means for predicting unknown events. Such meta-inductive methods are essentially imitative, where the predictions of other agents are imitated to (...) the extent that those agents have proven successful in the past. Despite the (self-serving) optimality of meta-inductive methods, their imitative nature may undermine the ‘wisdom of the crowd’, since these methods recommend that agents imitate the predictions of other agents. In this paper, I present a replication of selected results of Thorn and Schurz, illustrating the effect on a group’s performance that may result from having members of a group adopt meta-inductive methods. I then expand on the work of Thorn and Schurz by considering three simple measures by which meta-inductive prediction methods may improve their own performance, while simultaneously mitigating their negative impact on group performance. The effects of adopting these maneuvers are investigated using computer simulations. (shrink)

This commentary critically examines two facets of Tracy Llanera's recent book Richard Rorty: Outgrowing Modern Nihilism. First, it considers her interpretation of Richard Rorty's redemptive project. It argues that, while Llanera succeeds in resolving tensions in Rorty's public‐private distinction, her account downplays the role of abnormal discourse within projects of self‐creation. Second, it raises several questions about Llanera's strategy for situating this redemptive project within debates concerning existential nihilism. On her view, one ought to follow Rorty in addressing the problem (...) of egotism instead of the problem of nihilism, since the former is prior to the latter. But it is not clear who counts as an egotist, or why egotists are especially prone to becoming nihilists. Moreover, there are reasons to think that egotism and nihilism are fundamentally different kinds of problems. (shrink)

When people encounter potential hazards, their expectations and behaviours can be shaped by a variety of factors including other people's expressions of verbal likelihood. What is the impact of such expressions when a person also has numeric likelihood estimates from the same source? Two studies used a new task involving an abstract virtual environment in which people learned about and reacted to novel hazards. Verbal expressions attributed to peers influenced participants’ behaviour toward hazards even when numeric estimates were also available. (...) Namely, verbal expressions suggesting that the likelihood of harm from a hazard is low yielded more risk taking with respect to said hazard. There were also inverse collateral effects, whereby participants’ behaviour and estimates regarding another hazard in the same context were affected in the opposite direction. These effects may be based on directionality and relativity cues inferred from verbal likelihood expressions. (shrink)

In Situations and Individuals, Paul Elbourne argues that the natural language expressions that have been taken to refer to individuals — pronouns, proper names, and definite descriptions — have a common syntax and semantics, roughly that of definite descriptions as construed in the tradition of Frege. In the course of his argument, Elbourne shows that proper names have previously undetected donkey anaphoric readings.This is contrary to previous theorizing and, if true, would undermine what philosophers call the direct reference theory (...) (which holds that the sole contribution of a proper name to the truth conditions of a sentence is an individual) as well as the related doctrine that proper names are rigid designators. Elbourne begins by addressing donkey anaphora, relating other concerns about pronouns to the solution of this notorious problem. His subsequent argumentation provides a unified semantics for the donkey anaphoric and bound and referential uses of pronouns and discusses the prospect of unifying the syntax and semantics of pronouns with the syntax and semantics of normal definite descriptions. Elbourne's aim is not only to advance his proposal of a unified syntax and semantics but also to urge linguists and philosophers dealing with pronoun interpretation to consider a wider range of theories than they do at present, and to test the competing claims of description-based theories and dynamic semantics against the data. (shrink)

Instead of searching for "African solutions" which have proved problematic so far, policymakers should focus on developing effective solutions for the complex challenges raised by the issue of armed conflict in Africa.

We describe a prediction method called "Attractivity Weighting" (AW). In the case of cue-based paired comparison tasks, AW's prediction is based on a weighted average of the cue values of the most successful cues. In many situations, AW's prediction is based on the cue value of the most successful cue, resulting in behavior similar to Take-the-Best (TTB). Unlike TTB, AW has a desirable characteristic called "access optimality": Its long-run success is guaranteed to be at least as great as the most (...) successful cue. While access optimality is a desirable characteristic, concerns may be raised about the short-term performance of AW. To evaluate such concerns, we here present a study of AW's short-term performance. The results suggest that there is little reason to worry about the short-run performance of AW. Our study also shows that, in random sequences of paired comparison tasks, the behavior of AW and TTB is nearly indiscernible. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:SOME DOGMATIC CONSEQUENCES OF PAUL F. KNITTER'S UNITARIAN THEOCENTRISM PAUL D. MOLNAR St. John's University Jamaica, New York EACTIONS TO Paul Knitter's No Other Nanie? vary from criticizing his "unitarian theocentrism" 1 and his sliding away from "creedal Chrisitology" 2 to unequivocail endorsement of his" less Christocentric approach to a theo1ogy of religions;" 3 this shows the challenge Knitter poses to current dogmatics. This 1arHcile w1ll (...) explore three critical dogmatic issues related to Knitter's non-normative ChristoJogy. First, can the idea that Jesus is one savior among others be defonded froni within the Christian-Catholic 1tradition without yie1ding the truth of Christology? Second, if "Jesus remains universailly normativ ;e " for Christians while " other revelations or rev;ea:lers might also be universaUy normative," then does this not p:vomote some form of docetic Christology and lead to a unitarianism, exduded by the naiture of the God revealed in Christ? Third, on the basis of " l'eligious experience " Knitter olaims to perceive an" evolution from ecolesiocentrism to chrfatocentrism to theocentrism" and finally to "soteriooentrism." 4 Is there 1!1ea1ly such an evolution? And if there is noit, oan those who de- ~end the tradition succeed by arguing from experience and praxis rather than from revelation and faith? 5 Moreover, if 1"Review Symposium: Paul Knitter's No Other Name?: A Critical Survey of OMistian Attitudes toward the World Religions," in Horizons 13 (1986): 116-135. This is the view of Daniel Sheridan, p. llS. 2 This is the view of Denise Carmody. Ibid., p. 122. s This is the view of William Cenkner. Ibid., p. 127. 4 Ibid., pp. 133-34. 5 Denise Carmody, e.g., believes that we should stress praxis more than 449 450 PAUL D. MOLNAR we think the tradition should not be defended, have we not ceased to think about theological truth? Rather, have we not made divinity itself indis:tingiuishab1e from our human experiences and praxis at the outset? And does this not open the door to both polytheism allJd pantheism? By making God hut noit Christ normative, Knitter's " nonnormati ¥e" Christology re-1transiates the truth of Jesus' oonsubstantiality with the Father into the content of a myth, an experienice or a vailue judgment having no re1ality in itseH.6 It then defines :reveiLation and salvation.aocording to a unitarian view of God. While Knitter denies this,7 his reasoning aictuaUy is unitarian: In my proposed model, Jesus remains universally normative, but I am asking whether Christians can recognize that other revelations or revealers might also be universally normative. Could there be a complementary uniqueness among the religious traditions of the world? To try to answer that question, 'intellectual conversion;... is a requisite. But it will have to be an intellectual conversion that walks more than' the way to Nicea and Chalcedon'... only on the basis of the praxis of authentic dialogue-grounded in intellectual, moral, and religious conversion-can we know the unique~ ness of Christ.8 doctrine without relativizing Christ. Thus, for her, Rahner's Christology does not mean " that Christians cannot be open to the Buddha or Lord Krishna," Ibid., p. 126. The problem is that this very thinking already relativizes Christ. 6 Even theologians who do not intend the radical views of John Hick run a similar risk by beginning Christology from below in the manner of Paul Knitter. Cf., e.g., Edward L. Krasevac, O.P., "' Christology From Above' And 'Christology From Below '," The Thomist, 51 (1987) : 299-306, arguing that "Christological faith is an apostolic faith that has its origins in a historical process which began with the public ministry of our Lord...." (p. 300) causes us to ask what makes Christology true? Is it "the actual apostolic process " (306) or is it Jesus as the Lord who is and remains the sole foundation and validation for faith in any age? Does this approach not leave the door open to the kind of evolution which Knitter claims to have discovered in Christianity, which then enables him to move beyond Jesus as the only Lord and Savior? 1 Review Symposium, Horizons, p. 131. s Ibid., p. 133. KNITTER'S UNITARIAN THEOCENTRISM 451 Here the ha:.sis... (shrink)

The point, for the 946,326th time is that people get elected to office by currying the favor of powerful interest groups. They don’t get elected for their excellence as political philosophers.Congress has consistently failed to solve some serious problems with the cost, effectiveness, and safety of pharmaceuticals. In part, this failure results from the pharmaceutical industry convincing legislators to define policy problems in ways that protect industry profits. By targeting campaign contributions to influential legislators and by providing them with selective (...) information, the industry manages to displace the public’s voice in developing pharmaceutical policy. (shrink)

According to the paradigm of adaptive rationality, successful inference and prediction methods tend to be local and frugal. As a complement to work within this paradigm, we investigate the problem of selecting an optimal combination of prediction methods from a given toolbox of such local methods, in the context of changing environments. These selection methods are called meta-inductive strategies, if they are based on the success-records of the toolbox-methods. No absolutely optimal MI strategy exists—a fact that we call the “revenge (...) of ecological rationality”. Nevertheless one can show that a certain MI strategy exists, called “AW”, which is universally long-run optimal, with provably small short-run losses, in comparison to any set of prediction methods that it can use as input. We call this property universal access-optimality. Local and short-run improvements over AW are possible, but only at the cost of forfeiting universal access-optimality. The last part of the paper includes an empirical study of MI strategies in application to an 8-year-long data set from the Monash University Footy Tipping Competition. (shrink)

The article begins by describing two longstanding problems associated with direct inference. One problem concerns the role of uninformative frequency statements in inferring probabilities by direct inference. A second problem concerns the role of frequency statements with gerrymandered reference classes. I show that past approaches to the problem associated with uninformative frequency statements yield the wrong conclusions in some cases. I propose a modification of Kyburg’s approach to the problem that yields the right conclusions. Past theories of direct inference have (...) postponed treatment of the problem associated with gerrymandered reference classes by appealing to an unexplicated notion of projectability . I address the lacuna in past theories by introducing criteria for being a relevant statistic . The prescription that only relevant statistics play a role in direct inference corresponds to the sort of projectability constraints envisioned by past theories. (shrink)