Preadolescence is an important period for the consolidation of certain arithmetic facts, and the development of problem-solving strategies. Obese subjects seem to have poorer academic performance in math than their normal-weight peers, suggesting a negative effect of obesity on math skills in critical developmental periods. To test this hypothesis, event-related potentials were collected during a delayed-verification math task using simple addition and subtraction problems in obese [above 95th body mass index percentile] and non-obese preteens with different levels of math skill; (...) thirty-one with low math skills and thirty-one with high math skills. No significant differences between weight groups were observed in task accuracy regardless of their mathematical skill level. For ERPs, electrophysiological differences were found only in the subtraction condition; participants with obesity showed an electrophysiologic pattern associated with a reduced ability to allocate attention resources regardless of their math skill level, these differences were characterized by longer P300 latency than their normal-weight peers. Moreover, the participants with obesity with high math skills displayed hypoactivity in left superior parietal lobule compared with their normal-weight peers. Additionally, obese preteens with low math skills displayed smaller arithmetic N400 amplitude than non-obese participants, reflecting difficulties in retrieving visual, semantic, and lexical information about numbers. We conclude that participants with obesity are less able than their normal-weight peers to deploy their attention regardless of their behavioral performance, which seems to have a greater effect on obese participants with low math skills because they also show problems in the retrieval of solutions from working memory, resulting in a delay in the development of mathematical skills. (shrink)

The Planteome project provides a suite of reference and species-specific ontologies for plants and annotations to genes and phenotypes. Ontologies serve as common standards for semantic integration of a large and growing corpus of plant genomics, phenomics and genetics data. The reference ontologies include the Plant Ontology, Plant Trait Ontology, and the Plant Experimental Conditions Ontology developed by the Planteome project, along with the Gene Ontology, Chemical Entities of Biological Interest, Phenotype and Attribute Ontology, and others. The project also provides (...) access to species-specific Crop Ontologies developed by various plant breeding and research communities from around the world. We provide integrated data on plant traits, phenotypes, and gene function and expression from 95 plant taxa, annotated with reference ontology terms. (shrink)

A paradigm shift in public health and medicine has broadened the field from a singular focus on the ill effects of negative states and psychopathology to an expanded view that examines protective psychological assets that may promote improved physical health and longevity. We summarize recent evidence of the link between psychological well-being and physical health, with particular attention to outcomes of mortality and chronic disease incidence and progression. Within this evolving discipline there remain controversies and lessons to be learned. We (...) discuss measurement-related challenges, concerns about the quality of the evidence, and other shortcomings in the field, along with a brief discussion of hypothesized biobehavioral mechanisms involved. Finally, we suggest next steps to move the field forward. (shrink)

When the COVID-19 surge hit New York City hospitals, the Division of Medical Ethics at Weill Cornell Medical College, and our affiliated ethics consultation services, faced waves of ethical issues sweeping forward with intensity and urgency. In this article, we describe our experience over an eight-week period (16 March through 10 May 2020), and describe three types of services: clinical ethics consultation (CEC); service practice communications/interventions (SPCI); and organizational ethics advisement (OEA). We tell this narrative through the prism of time, (...) describing the evolution of ethical issues and trends as the pandemic unfolded. We delineate three phases: anticipation and preparation, crisis management, and reflection and adjustment. The first phase focused predominantly on ways to address impending resource shortages and to plan for remote ethics consultation, and CECs focused on code status discussions with surrogates. The second phase was characterized by the dramatic convergence of a rapid increase in the number of critically ill patients, a growing scarcity of resources, and the reassignment/ redeployment of staff outside their specialty areas. The third phase was characterized by the recognition that while the worst of the crisis was waning, its medium- and long-term consequences continued to pose immense challenges. We note that there were times during the crisis that serving in the role of clinical ethics consultant created a sense of dis-ease as novel as the coronavirus itself. In retrospect we learned that our activities far exceeded the familiar terrain of clinical ethics consultation and extended into other spheres of organizational life in novel ways that were unanticipated before this pandemic. To that end, we defined and categorized a middle level of ethics consultation, which we have termed service practice communication intervention (SPCI). This is an underappreciated dimension of the work that ethics consult services are capable of in times of crisis. We believe that the pandemic has revealed the many enduring ways that ethics consultation services can more robustly contribute to the ethical life of their institutions moving forward. (shrink)

Cancer biologists ascribe normal functions to parts of cancer. Normal functions are activities that parts of systems are in some minimal sense supposed to perform. Cancer biologists’ finding normality within the abnormality of cancer pose difficulties for two main approaches to normal function. One approach claims that normal functions are activities that parts are selected for. However, some parts of cancers that have normal functions aren’t selected to perform them. The other approach claims that normal functions are part-activities typical for (...) the system and that contribute to survival/reproduction. However, cancers are too heterogeneous to establish what’s typical across a type. (shrink)

I respond to comments by David Barnett and Roy Sorensen on my paper ‘Epistemic Modals’.

Many of us believe (1) Saving a life is more important than averting any number of headaches. But what about risky cases? Surely: (2) In a single choice, if the risk of death is low enough, and the number of headaches at stake high enough, one should avert the headaches rather than avert the risk of death. And yet, if we will face enough iterations of cases like that in (2), in the long run some of those small risks of (...) serious harms will surely eventuate. And yet: (3) Isn't it still permissible for us to run these repeated risks, despite that knowledge? After all, if it were not, then many of the risky activities that we standardly think permissible would in fact be impermissible. Nobody has yet offered a principle that can accommodate all of 1-3. In this paper, I show that we can accommodate all of these judgements, by taking into account both ex ante and ex post perspectives. In doing so, I clear aside an important obstacle to a viable deontological decision theory. (shrink)

Many new mothers question the nature of their motherly love after birth. This affectionate relationship towards the infant is commonly called bonding in everyday speech, clinical practice and research. Bonding may not sufficiently describe the mother’s emotional response to the infant and does not capture the ambivalence and struggle to develop maternal affection of many women. This study aims to explore the phenomenon of disturbed maternal affection through the clinical case of one mother who experienced severe and prolonged disturbances. Two (...) in-depth interviews led to a descriptive phenomenological analysis. The mother developed depressive symptoms from not feeling enough for her child, not the opposite, as is often hypothesized. We describe and discuss crucial constituents of her experience, such as ambivalence, remoteness, boredom, guilt, and the looming repetition of parenting patterns, and a solution resulting from therapy-enhanced reflection on motherhood vis-à-vis early life patterns, sociocultural expectations and existential predicaments. (shrink)

How should deontologists concerned with the ethics of killing apply their moral theory when we don’t know all the facts relevant to the permissibility of our action? Though the stakes couldn’t be higher, and uncertainty is endemic where killing is concerned, few deontologists have an answer to this question. In this paper I canvass two possibilities: that we should apply a threshold standard, equivalent to the ‘beyond a reasonable doubt’ standard applied for criminal punishment; and that we should fit our (...) deontological ethical theory into the apparatus of decision theory. I show that the first approach faces insurmountable obstacles, while the second holds much more promise for deontologists than they might first have assumed. (shrink)

I don’t propose to harp on the question of whether MacFarlane has the data right. Let us just assume, for the sake of argument, that he does. Let us further assume that his interpretation of the data is correct—i.e., that these judgments are assessments of the the whole clause and not simply of the prejacent. Granting all this—maybe a lot—we need a semantics for epistemic modals that will make sense of the judgments in this case, and in relevantly similar cases. (...) Mac- Farlane argues that contextualism about epistemic modals cannot make sense of the judgments. His central worry is that it can only get the truth-value judgments of speakers right by making the truth-conditions of epistemic modal claims outrageously strong—too strong to be assertable in cases where they are, in fact, assertable. We might call it the contextualist’s dilemma: either our semantics systematically fails to capture the truth-value judgments that people actually make, or it captures these judgments but turns users of epistemic modal sentences into irrational asserters. (shrink)

Consider a language incorporating a mirror-image form of assertion, where the norm is to express what you take to be false rather than what you take to be true. Why aren’t ordinary languages like that? Why do we generally assert what we take to be true rather than what we take to be false? If Lewis and Massey are right, there is a sense in which the question is based on a mistake, and in which English could be described either (...) way. I explore that idea, which centers on the role of duality in language. One of the main questions in the air is whether the symmetry of duality can be used as a guide to ‘real structure’ in semantics and pragmatics. I try to think through it with an analogy to relationism about space. (shrink)

Debates about the role of technology in sports officiating assume that technology would, _ceteris paribus_, improve accuracy over unassisted human officiating. While this is largely true, it also presents a false dilemma: that we can have accurately officiated sports or human officials, but not both. What this alleged dilemma ignores is that the criteria by which we measure accuracy are also up for revision. We _could_ have sports that are so defined as to be easily judged by human officials. A (...) case from the recent history of science provides an instructive example. I argue that _if_ we insist on human officials, we can still aim for maximal accuracy, though there will be tradeoffs. With compelling reasons to want accuracy in officiating, however, these tradeoffs effectively serve as a _reductio_ against the use of human officials unaided by technology. (shrink)

Frankfurt cases are purported counterexamples to the Principle of Alternative Possibilities, which implies that we are not morally responsible for unavoidable actions. A major permutation of the counterexample strategy features buffered alternatives; this permutation is designed to overcome an influential defense of the Principle of Alternative Possibilities. Here we defend the buffering strategy against two recent objections, both of which stress the timing of an agent’s decision. We argue that attributions of moral responsibility aren’t time-sensitive in the way the objectors (...) suppose. We then turn to the crucial question of when an action is relevantly avoidable—when, in the parlance of the literature, an alternative possibility is robust. We call attention to two plausible tests for robustness that merit further consideration, showing that the agents in buffered Frankfurt cases don’t pass these tests, despite being morally responsible for their actions. (shrink)

In saying that it was up to someone whether or not she acted as she did, we are attributing a distinctive sort of power to her. Understanding such power attributions is of broad importance for contemporary discussions of free will. Yet the ‘is up to…whether’ locution and its cognates have largely escaped close examination. This article aims to elucidate one of its unnoticed features, namely that such power attributions introduce intensional contexts, something that is easily overlooked because the sentences that (...) express these attributions admit of both intensional and extensional readings. I argue that this kind of power attribution should inform discussions of Frankfurt’s counterexample strategy, in that an alternative possibility should not be considered robust unless it’s up to the agent whether or not it’s realized. I argue, as well, that understanding robust alternatives in this way sheds light on the relationship between the Frankfurt literature and the Luck Objection to libertarianism. (shrink)

We need a moral theory for decision-making with imperfect information; that is, decision-making under what decision theorists call both risk, when we can assign probabilities, and uncertainty, when we cannot. And yet contemporary philosophy has, for the most part, offered a division of labor: ethicists work out what we morally ought to do if we knew all the facts; decision theorists, working quite separately, focus on what we rationally ought to do, given our doubt. In this symposium, we start to (...) bridge that divide—to bring ethicists and decision theorists together, to work out what we morally ought to do when we don’t know all the facts. (shrink)

In his seminal essay “Freedom and Resentment,” Strawson drew attention to the role of such emotions as resentment, moral indignation, and guilt in our moral and personal lives. According to Strawson, these reactive attitudes are at once constitutive of moral blame and inseparable from ordinary interpersonal relationships. On this basis, he concluded that relinquishing moral blame isn’t a real possibility for us, given our commitment to personal relationships. If well founded, this conclusion puts the traditional free-will debate in a new (...) light. In particular, in so far as incompatibilists believe that we can or should forgo moral blame if determinism is true, their stance may seem out of touch with our emotional reality. Here I examine Strawson’s claim that the reactive attitudes are inseparable from ordinary interpersonal relationships. Strawson says surprisingly little to support this intriguing claim, and thus far no argument for it has emerged in the literature. My aim is to remedy this. Specifically, I set out an argument for a suitably formulated version of the inseparability claim, an argument that appeals to the relationship between the reactive attitudes and other elements of our emotional lives. I then show how this argument helps to answer an important recent challenge to Strawson’s position. If I am right, there is good reason to doubt that the reforms envisaged by some incompatibilists, reforms to our blame-related practices, are a real possibility for us. (shrink)

The Luck Objection is an influential family of challenges to libertarianism. In recent years, discussions of the Luck Objection have reached an impasse of sorts. On one hand, existing responses to the objection have failed to satisfy libertarianism’s many critics. On the other hand, a growing number of libertarians seem unimpressed by existing formulations of the objection. To break the impasse, I present a two-stage version of the objection. The first stage has the limited objective of showing that supposed exercises (...) of free will resemble certain nonactions in being truly random outcomes. The second stage seeks to show that we aren’t morally responsible for supposed exercises of free will if they are truly random outcomes. The leading idea is that such actions, qua truly random outcomes of our prior mental states, don’t meet a plausible guidance requirement for morally responsible agency. (shrink)

In the context of his highly influential defence of compatibilism, P. F. Strawson 1962 introduced the terms "reactive attitude" and "objective attitude" to the free-will lexicon. He argued, in effect, that relinquishing such reactive attitudes as resentment and moral indignation isn't a real possibility for us, since doing so would commit us to exclusive objectivity, a stance incompatible with ordinary interpersonal relationships. While most commentators have challenged Strawson's link between personal relationships and the reactive attitudes, Tamler Sommers 2007 has taken (...) up Strawson's claim that exclusive objectivity would preclude meaningful relationships. Here I set out a defence of this claim by identifying a kind of interpersonal caring that is plausibly both required for such relationships and excluded by the objective attitude. I then argue that this defence helps to support Strawson's more controversial claim about personal relationships and the reactive attitudes. (shrink)

Theories of moral responsibility rely on tracing principles to account for derivative moral responsibility. Manuel Vargas has argued that such principles are problematic. To show this, he presents cases where individuals are derivatively blameworthy for their conduct, but where there is no suitable earlier time to which their blameworthiness can be traced back. John Martin Fischer and Neal Tognazzini have sought to resolve this problem by arguing that blameworthiness in these scenarios can be traced back, given the right descriptions of (...) these agents’ later conduct. I contend that this strategy may succeed against Vargas’s particular examples, but that it fails to resolve the larger problem. After clarifying some key issues about derivative responsibility and tracing principles, I develop a case that isn’t amenable to Fischer and Tognazzini’s treatment. I then suggest the outlines of a compromise solution to the problem for tracing principles. (shrink)

In ‘Epistemic Modals’ (2007), Seth Yalcin proposes Stalnaker-style semantics for epistemic possibility. He is inspired by John MacFarlane’s ingenious defence of relativism, in which claims of epistemic possibility are made rigidly from the perspective of the assessor’s actual stock of information (rather than from the speaker’s knowledge base or that of his audience or community). The innovations of MacFarlane and Yalcin independently reinforce the modal collapse espoused by Jaakko Hintikka in his 1962 epistemic logic (which relied on the implausible (...) KK principle and heavy idealizations). I respond to this new challenge with fresh objections to the underlying S4 equivalence: p p . I also propose counter-analyses of the intriguing data which Yalcin cites in support of his new semantics. A key collateral motivation for this defence of irredundant iterations is to ward off a threat to higher order vagueness. (shrink)

This essay argues for a two-part thesis concerning the deflationist theories of truth and reference. First, I identify two points of contrast between the deflationist theories and their traditional inflationary opponents: (1) they each employ different orders of explanation for the variety of semantic phenomena, and (2) the inflationist is typically taken to be beholden to a reductive explanation of reference, whereas the deflationist is doubtful of this project. Secondly, I argue that these two points of contrast need not come (...) together to exhaust the space of possible views. There is room for a plausible middle ground: a moderate version of inflationism. My moderate inflationism will reject the deflationist's order of explanation, so it counts as genuinely inflationary. However, it also rejects the reductionist ambitions of the earlier inflationists, so it isn’t an apt target for deflationary scepticism. (shrink)

Here I motivate and defend a new counterexample to logical (or non-causal) versions of the direct argument for responsibility-determinism incompatibilism. Such versions purport to establish incompatibilism via an inference principle to the effect that non-responsibility transfers along relations of logical consequence, including those that hold between earlier and later states of a deterministic world. Unlike previous counterexamples, this case doesn't depend on preemptive overdetermination; nor can it be blocked with a simple modification of the inference principle. In defending this counterexample, (...) I show that van Inwagen's technical notion of being partly responsible for a state of affairs, which figures in his statement of the principle, is problematic. (shrink)

The poster boy for my paper is the King's Messenger in Lewis Carroll's Through the Looking Glass. Recall that since the White Queen lives backwards, her memory works forwards. She pities Alice who can only remember things after they happen. Alice asks which things the Queen remembers best: `Oh, things that happened the week after next,' the Queen replied in a careless tone. `For instance, . . . there's the King's Messenger. He's in prison now, being punished: and the trial (...) doesn't even begin till next Wednesday: and of course the crime comes last of all.' (Chapter V) Is the King's Messenger being treated unjustly? Why not prepunish people for their future crimes? True, it is generally easier to have knowledge about past crimes than future crimes. But is unpredictability the only problem with prepunishment? (shrink)

ABSTRACT Edward Bellamy's influential utopian novel Looking Backward dramatizes the epistemological impact of an increasingly media-saturated urban environment on turn-of-the-century American culture and identity. Bellamy's fanciful adaptation of the telephone receives particularly careful analysis in this essay. Deprived of its transmitting function, this denatured instrument both disrupts Bellamy's utopian project and, more subtly, registers the effect of mass media technologies on the construction and coherence of subjectivity. Lowenstein ultimately argues that Bellamy's novel rehearses the displacement of an epistemology rooted in (...) the search for ontological certainty by what Anthony Giddens calls an epistemology of social reflexivity. (shrink)

In this paper, I explore a new approach to the problem of determinism and moral responsibility. This approach involves asking when someone has a compelling claim to exemption against other members of the moral community. I argue that it is sometimes fair to reject such claims, even when the agent doesn’t deserve, in the sense of basic desert, to be blamed for her conduct. In particular, when an agent’s conduct reveals that her commitment to comply with the standards of the (...) moral community is deficient, and when her demand for exemption further exemplifies this deficiency, she cannot complain of unfair treatment if her demand is rejected. To support this contention, I argue that we are sometimes justified in rejecting otherwise valid moral appeals on the grounds that they are cynically motivated, especially when an agent merely seeks to exploit our commitment to comply with reasonable interpersonal standards. An advantage of this approach is that it affords compatibilists a middle path, allowing them to defend our practice of blaming on non-consequentialist grounds of fairness, even as they acknowledge the force of arguments for incompatibilism about basic desert. (shrink)

Philosophy as criticism of categories, by A. Seth.--The relation of philosophy to science, by R. B. Haldane and J. S. Haldane.--Logic as the science of knowledge, by B. Bosanquet.--The historical method, by W. R. Sorley.--The rationality of history, by D. G. Ritchie.--The philosophy of art, W. P. Ker.--The social organism, by H. Jones.--The struggle for existence, by J. Bonar.--Pessimism and the religious consciousness, by T. B. Kilpatrick.

The No-No Paradox consists of a pair of statements, each of which ?says? the other is false. Roy Sorensen claims that the No-No Paradox provides an example of a true statement that has no truthmaker: Given the relevant instances of the T-schema, one of the two statements comprising the ?paradox? must be true (and the other false), but symmetry constraints prevent us from determining which, and thus prevent there being a truthmaker grounding the relevant assignment of truth values. (...) class='Hi'>Sorensen's view is mistaken: situated within an appropriate background theory of truth, the statements comprising the No-No Paradox are genuinely paradoxical in the same sense as is the Liar (and thus, on Sorensen's view, must fail to have truth values). This result has consequences beyond Sorensen's semantic framework. In particular, the No-No Paradox, properly understood, is not only a new paradox, but also provides us with a new type of paradox, one which depends upon a general background theory of the truth predicate in a way that the Liar Paradox and similar constructions do not. (shrink)

In this paper we argue that predictive processing (PP) theory cannot account for the phenomenon of affect-biased attention prioritized attention to stimuli that are affectively salient because of their associations with reward or punishment. Specifically, the PP hypothesis that selective attention can be analyzed in terms of the optimization of precision expectations cannot accommodate affect-biased attention; affectively salient stimuli can capture our attention even when precision expectations are low. We review the prospects of three recent attempts to accommodate affect with (...) tools internal to PP theory: Miller and Clark’s (2018) embodied inference; Seth’s (2013) interoceptive inference; and Joffily and Coricelli’s (2013) rate of change of free energy. In each case we argue that the account does not resolve the challenge from affect-biased attention. For this reason, we conclude that prediction error minimization is not sufficient to explain all mental phenomena, contrary to the claim that the PP framework provides a unified theory of all mental phenomena or the brain ‘s cognitive functioning. Nevertheless, we suggest that empirical investigation of the interaction between affective salience and precision expectations should prove helpful in understanding the limits of PP theory, and may provide new directions for the application of a Bayesian perspective to perception. (shrink)

is an important principle, worthy of serious scrutiny. Its truth or falsity bears on the question of whether moral rightness, obligatoriness, etc., are a matter of factors “internal” to an agent, or whether “external” factors are relevant to determining the moral normative status of acts. Moreover, Access enjoys considerable intuitive support. If I destroy Greensboro in professor Sorensen’s example by pushing the wrong button, I seem to have a good excuse to give to anyone who would accuse me of (...) wrongdoing: “I had no way of knowing that this action would be wrong!” But if I have a good excuse, then pushing the button doesn’t seem wrong; and if that action isn’t wrong, then I had no obligation to refrain from pushing that button. A principle distinct from, but analogous to, Access also deserves our attention. (shrink)

Sorensen offers the following definition of a ‘knowledge-lie’: ‘An assertion that p is a knowledge-lie exactly if intended to prevent the addressee from knowing that p is untrue but is not intended to deceive the addressee into believing p.’ According to Sorensen, knowledge-lies are not meant to deceive their addressee, and this fact is supposed to make them less bad than ordinary lies. I will argue that standard cases of knowledge-lies, including almost all the cases Sorensen considers, (...) do in fact involve deception, contrary to what Sorensen claims. And while there are cases of non-deceptive knowledge-lies, such cases are deviant, either because it is only incidental that the knowledge-preventing assertion is a lie, or because it is only incidental that the lie doesn't deceive. Here's an example of a knowledge-lie: Dr Head is considering firing Dr Appendix because of his weak research. But he doesn't want to fire Appendix unless he knows that Appendix's research isn't good, and so he consults Dr Heart. Head knows that if Appendix's research is good, then Heart will tell the truth and say so, whereas if Appendix's work isn't good, then Heart may or may not …. (shrink)

A major approach to the ethics of artificial intelligence is to use social choice, in which the AI is designed to act according to the aggregate views of society. This is found in the AI ethics of “coherent extrapolated volition” and “bottom–up ethics”. This paper shows that the normative basis of AI social choice ethics is weak due to the fact that there is no one single aggregate ethical view of society. Instead, the design of social choice AI faces three (...) sets of decisions: standing, concerning whose ethics views are included; measurement, concerning how their views are identified; and aggregation, concerning how individual views are combined to a single view that will guide AI behavior. These decisions must be made up front in the initial AI design—designers cannot “let the AI figure it out”. Each set of decisions poses difficult ethical dilemmas with major consequences for AI behavior, with some decision options yielding pathological or even catastrophic results. Furthermore, non-social choice ethics face similar issues, such as whether to count future generations or the AI itself. These issues can be more important than the question of whether or not to use social choice ethics. Attention should focus on these issues, not on social choice. (shrink)

Artificial intelligence experts are currently divided into “presentist” and “futurist” factions that call for attention to near-term and long-term AI, respectively. This paper argues that the presentist–futurist dispute is not the best focus of attention. Instead, the paper proposes a reconciliation between the two factions based on a mutual interest in AI. The paper further proposes realignment to two new factions: an “intellectualist” faction that seeks to develop AI for intellectual reasons and a “societalist faction” that seeks to develop AI (...) for the benefit of society. The paper argues in favor of societalism and offers three means of concurrently addressing societal impacts from near-term and long-term AI: advancing societalist social norms, thereby increasing the portion of AI researchers who seek to benefit society; technical research on how to make any AI more beneficial to society; and policy to improve the societal benefits of all AI. In practice, it will often be advantageous to emphasize near-term AI due to the greater interest in near-term AI among AI and policy communities alike. However, presentist and futurist societalists alike can benefit from each others’ advocacy for attention to the societal impacts of AI. The reconciliation between the presentist and futurist factions can improve both near-term and long-term societal impacts of AI. (shrink)

Can God create a stone too heavy for him to lift? Can time have a beginning? Which came first, the chicken or the egg? Riddles, paradoxes, conundrums--for millennia the human mind has found such knotty logical problems both perplexing and irresistible. Now Roy Sorensen offers the first narrative history of paradoxes, a fascinating and eye-opening account that extends from the ancient Greeks, through the Middle Ages, the Enlightenment, and into the twentieth century. When Augustine asked what God was doing (...) before He made the world, he was told: "Preparing hell for people who ask questions like that." A Brief History of the Paradox takes a close look at "questions like that" and the philosophers who have asked them, beginning with the folk riddles that inspired Anaximander to erect the first metaphysical system and ending with such thinkers as Lewis Carroll, Ludwig Wittgenstein, and W.V. Quine. Organized chronologically, the book is divided into twenty-four chapters, each of which pairs a philosopher with a major paradox, allowing for extended consideration and putting a human face on the strategies that have been taken toward these puzzles. Readers get to follow the minds of Zeno, Socrates, Aquinas, Ockham, Pascal, Kant, Hegel, and many other major philosophers deep inside the tangles of paradox, looking for, and sometimes finding, a way out. Filled with illuminating anecdotes and vividly written, A Brief History of the Paradox will appeal to anyone who finds trying to answer unanswerable questions a paradoxically pleasant endeavor. (shrink)

Epistemic modal operators give rise to something very like, but also very unlike, Moore's paradox. I set out the puzzling phenomena, explain why a standard relational semantics for these operators cannot handle them, and recommend an alternative semantics. A pragmatics appropriate to the semantics is developed and interactions between the semantics, the pragmatics, and the definition of consequence are investigated. The semantics is then extended to probability operators. Some problems and prospects for probabilistic representations of content and context are explored.

Can merely thinking about an imaginary situation provide evidence for how the world actually is--or how it ought to be? In this lively book, Roy A. Sorensen addresses this question with an analysis of a wide variety of thought experiments ranging from aesthetics to zoology. Presenting the first general theory of thought experiment, he sets it within an evolutionary framework and integrates recent advances in experimental psychology and the history of science, with special emphasis on Ernst Mach and Thomas (...) Kuhn. Sorensen explores what thought experiments are, how they work, and what their virtues and vices are. In his view, philosophy differs from science in degree, but not in kind. For this reason, he claims, it is possible to understand philosophical thought experiments by concentrating on their resemblance to scientific relatives. Sorensen assesses the hazards of thought experiments and grants that there are interesting ways in which the method leads us astray, but attacks most scepticism about thought experiments as arbitrary. He maintains that they should be used--as they generally are--as part of a diversified portfolio of techniques, creating a network of cross-checks that make for impressive reliability. (shrink)