A joke is amusing if and only if it’s fitting to be amused by it; an act is regrettable if and only if it’s fitting to regret it. Many philosophers accept these biconditionals and hold that analogous ones obtain between a wide range of additional evaluative properties and the fittingness of corresponding responses. Call these the _fit–value biconditionals_. The biconditionals give us a systematic way of recognizing the role of fit in our ethical practices; they also serve as the bedrock (...) of various metaethical projects, such as fitting-attitude analysis of value and the ‘fittingness first’ approach. Yet despite the importance of the biconditionals, there is very little discussion of their proper interpretation. This paper argues that any plausible interpretation of the fit_–_value biconditionals must disarm several kinds of apparent counterexample. For instance, that an achievement is pride-worthy doesn’t imply it is fitting for me to take pride in it because the achievement might not be mine or that of anyone close to me; that a joke is amusing doesn’t imply it is fitting for me to be amused by it for six straight months; and that a person is loveable doesn’t imply it is fitting for me to love him romantically because that person might be my sibling. We consider possible responses to such counterexamples and develop what we consider the most promising interpretation of the biconditionals. The upshot is that certain widespread assumptions about fit and its relation to value and reasons should be reconsidered. (shrink)

It is tempting to hold that guilt‐tripping is morally wrong, either because it is objectionably manipulative, or because it involves gratuitously aiming to make another person suffer, or both. In this article, I develop a picture of guilt according to which guilt is a type of pain that incorporates a commitment to its own justification on the basis of the subject's wrongdoing. This picture supports the hypothesis that feeling guilty is an especially efficient means for a wrongdoer to come to (...) more deeply understand why her behavior was wrong; it is precisely because guilt is painful and involves a self‐reflexive justificatory element that it is able to play this role. Such a picture, moreover, preserves the possibility that deliberately making others feel guilty needn't involve aiming gratuitously to harm them and needn't be objectionably manipulative. It follows that we should be surprisingly sanguine about the practice of inducing guilt in wrongdoers as a means of facilitating their moral edification. (shrink)

According to “voluntarists,” voluntary control is a necessary precondition on being blameworthy. According to “non-voluntarists,” it isn’t. I argue here that we ought to take seriously a type of voluntary control that both camps have tended to overlook. In addition to “direct” control over our behavior, and “indirect” control over some of the consequences of our behavior, we also possess “constitutive” control: the capacity to govern some of our attitudes and character traits by making choices about what to do that (...) constitute those attitudes and traits. Taking this sort of control seriously, I argue, ultimately tips the scale towards voluntarism. First, I address a non-voluntarist case in which an agent is putatively made blameworthy by the reasons for which she acts, even though the particular reasons for which she acts aren’t up to her. I argue that this case looks compelling only if we overlook constitutive control, and thereby miss how the agent’s motivating reasons are under her voluntary control even though non-voluntarists think they are not. I then use the notion of constitutive control to diffuse some of the best putative counterexamples to voluntarism: cases in which subjects are blameworthy either for caring inadequately about others or for wishing them ill. (shrink)

Julia Knopes’s (2025) article aims to explain how models of disability apply in the lives and experiences of people with lived mental health conditions who serve as peer support providers. However,...

The DSM is the main classification of mental disorders used by psychiatrists in the United States and, increasingly, around the world. Although widely used, the DSM has come in for fierce criticism, with many commentators believing it to be conceptually flawed in a variety of ways. This paper assesses some of these philosophical worries. The first half of the paper asks whether the project of constructing a classification of mental disorders that ‘cuts nature at the joints’ makes sense. What is (...) mental disorder? Are types of mental disorder natural kinds (that is, are the distinctions between them objective and of fundamental theoretical importance, as are, say, the distinctions between the chemical elements)? The second half of the paper addresses epistemic worries. Even if types of mental disorder are natural kinds there may be reason to doubt that the DSM will come to reflect their natural structure. In particular, I examine the extent to which the DSM is theory-laden, and look at how it has been shaped by social and financial factors. Ultimately, I conclude that although the DSM is of immense practical importance it is not likely to become the best possible classification of mental disorders. (shrink)

Pyrrhonian sceptics claim, notoriously, to assent to the appearances without making claims about how things are. To see whether this is coherent we need to consider the philosophical history of ‘appearance’(phainesthai)-talk, and the closely related concept of an impression (phantasia). This history suggests that the sceptics resemble Plato in lacking the ‘non-epistemic’ or ‘non-doxastic’ conception of appearance developed by Aristotle and the Stoics. What is distinctive about the Pyrrhonian sceptic is simply that the degree of doxastic commitment involved in his (...) assent to an impression is asymptotally low. (shrink)

What words we use, and what meanings they have, is important. We shouldn't use slurs; we should use 'rape' to include spousal rape (for centuries we didn’t); we should have a word which picks out the sexual harassment suffered by people in the workplace and elsewhere (for centuries we didn’t). Sometimes we need to change the word-meaning pairs in circulation, either by getting rid of the pair completely (slurs), changing the meaning (as we did with 'rape'), or adding brand new (...) word-meaning pairs (as with 'sexual harassment'). A problem, though, is how to do this. One might worry that any attempt to change language in this way will lead to widespread miscommunication and confusion. I argue that this is indeed so, but that's a feature, not a bug of attempting to change word-meaning pairs. The miscommunications and confusion such changes cause can lead us, via a process I call transformative communicative disruption, to reflect on our language and its use, and this can be further, rather than hinder, our goal of improving language. (shrink)

A generally ignored feature of Plato’s celebrated image of the cave in Republic VII is that the ascent from the cave is, in its initial stages, said to be brought about by force. What kind of ‘force’ is this, and why is it necessary? This paper considers three possible interpretations, and argues that each may have a role to play.

This discussion emphasises the diversity, philosophical seriousness and methodological distinctiveness of sophistic thought. Particular attention is given to their views on language, ethics, and the social construction of various norms, as well as to their varied, often undogmatic dialectical methods. The assumption that the sophists must have shared common doctrines (not merely overlapping interests and professional practices) is called into question.

Many philosophers today approach important psychological phenomena, such as weakness of the will and moral motivation, using a broadly Humean distinction between beliefs, which aim to represent the world, and desires, which aim to change the world. On this picture, desires provide the ends or goals of action, while beliefs simply tell us how to achieve those ends. In the Republic, Socrates attempts to explain the phenomena using a different distinction: he argues that the human soul or psyche consists in (...) reason, spirit, and appetite. It is initially tempting to assimilate Socrates’ picture to the standard belief ⁄ desire model, and to think that reason’s role in motivating action is restricted to calculating the best means for satisfying spirited and appetitive desires. But this would be a mistake, since Socrates thinks that each element in the soul is capable of setting the ends of action. But then how exactly should we understand these elements? My aim in this essay is to introduce the reader to Plato’s theory of the tripartite psychology. In part 2, I present Socrates’ argument for the claim that the soul has three elements. In part 3, I provide a general characterization of reason, spirit, and appetite, respectively. I then turn to discuss two central interpretive issues. In part 4, I discuss the sense in which Socrates considers the appetitive and spirited elements to be non-rational. And in the final part of the essay, I discuss the issue of how we ought to conceive of the parts of the soul, and more specifically, whether we should think of them as agent-like parts, or in some other way. (shrink)

A generally ignored feature of Aristotle’s famous function argument is its reliance on the claim that practitioners of the crafts (technai) have functions: but this claim does important work. Aristotle is pointing to the fact that we judge everyday rational agency and agents by norms which are independent of their contingent desires: a good doctor is not just one who happens to achieve his personal goals through his work. But, Aristotle argues, such norms can only be binding on individuals if (...) human rational agency as such is governed by objective teleological norms.
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This book derives from Annas’s 1997 Townsend Lectures at Cornell University, and it retains the invigorating clarity and fast pace of a first-rate lecture series. In it Annas discusses assorted topics in Plato’s ethics and their ancient interpretation: her unifying theme is that we have much to learn from ancient readings of Plato, and those of the Middle Platonists in particular.

Plato’s depiction of the first city in the Republic (Book II), the so-called ‘city of pigs’, is often read as expressing nostalgia for an earlier, simpler era in which moral norms were secure. This goes naturally with readings of other Platonic texts (including Republic I and the Gorgias) as expressing a sense of moral decline or crisis in Plato’s own time. This image of Plato as a spokesman for ‘moral nostalgia’ is here traced in various nineteenth- and twentieth-century interpretations, and (...) rejected. Plato’s pessimism about human nature in fact precludes any easy assumption that things, or people, were better in the old days. (shrink)

Community databases have become crucial to the collection, ordering and retrieval of data gathered on model organisms, as well as to the ways in which these data are interpreted and used across a range of research contexts. This paper analyses the impact of community databases on research practices in model organism biology by focusing on the history and current use of four community databases: FlyBase, Mouse Genome Informatics, WormBase and The Arabidopsis Information Resource. We discuss the standards used by the (...) curators of these databases for what counts as reliable evidence, acceptable terminology, appropriate experimental set-ups and adequate materials (e.g., specimens). On the one hand, these choices are informed by the collaborative research ethos characterising most model organism communities. On the other hand, the deployment of these standards in databases reinforces this ethos and gives it concrete and precise instantiations by shaping the skills, practices, values and background knowledge required of the database users. We conclude that the increasing reliance on community databases as vehicles to circulate data is having a major impact on how researchers conduct and communicate their research, which affects how they understand the biology of model organisms and its relation to the biology of other species. (shrink)

Among Aristotle’s criticisms of the Form of the Good is his claim that the knowledge of such a Good could be of no practical relevance to everyday rational agency, e.g. on the part of craftspeople. This critique turns out to hinge ultimately on the deeply different assumptions made by Plato and Aristotle about the relation of ‘good’ and ‘good for’. Plato insists on the conceptual priority of the former; and Plato wins the argument.

Bioethics has entered a new era: as many commentators have noted, the familiar mantra of autonomy, beneficence, nonmaleficence, and justice has proven to be an overly simplistic framework for understanding problems that arise in modern medicine, particularly at the intersection of public policy and individual preferences. A tradition of liberal pluralism grounds respect for individual preferences and affirmation of competing conceptions of the good. But we struggle to maintain (or at times explicitly reject) this tradition in the face of individual (...) preferences that we find distasteful, suspect, or even repugnant, especially where the broader social good or respect for equality is at stake. Directed donation presents us with such a dilemma: can we uphold the right of self-determination through respect of individual preferences regarding disposition of transplantable organs while at the same time maintaining an allocation system that reflects values of equity and justice claimed to underlie the socially negotiated practice of transplantation? Or are some preferences simply to be deemed unethical and not respected, even if that leads to a reduction in the number of transplantable organs available and to an apparent disregard for the autonomous decisions of the recently deceased? (shrink)

Our aesthetic judgments are embedded in and shaped by unjust social orders. But can our aesthetic judgments themselves—“this is beautiful; that is not”—be unjust? This article argues that they can. Admitting that this is so does not require us to be unduly revisionary with respect to our concept of justice. Rather, the thought that aesthetic judgments are unjust flows naturally from familiar egalitarian constraints.

The biological sciences have become increasingly reliant on so-called 'model organisms'. I argue that in this domain, the concept of a descriptive model is essential for understanding scientific practice. Using a case study, I show how such a model was formulated in a preexplanatory context for subsequent use as a prototype from which explanations ultimately may be generated both within the immediate domain of the original model and in additional, related domains. To develop this concept of a descriptive model, I (...) focus on use of the nematode worm Caenorhabditis elegans and the wiring diagrams that were developed as models of its neural structure. In addition, implications of the concept of a descriptive model, particularly its relevance for the data-phenomena distinction as well as its relation to long-standing debates on realism, are briefly examined. (shrink)

It is very difficult to get a clear picture of how the Stoic is supposed to deliberate. This paper considers a number of possible pictures, which cover such a wide range of options that some look Kantian and others utilitarian. Each has some textual support but is also unworkable in certain ways: there seem to be genuine and unresolved conflicts at the heart of Stoic ethics. And these are apparently due not to developmental changes within the school, but to the (...) Stoics’ having adopted implicitly incompatible solutions in response to different philosophical challenges. (shrink)

Are the long, wildly inventive etymologies in Plato’s Cratylus just some kind of joke, or does Plato himself accept them? This standard question misses the most important feature of the etymologies: they are a competitive performance, an agôn by Socrates in which he shows that he can play the game of etymologists like Cratylus better than they can themselves. Such show-off performances are a recurrent feature of Platonic dialogue: they include Socrates’ speeches on eros in the Phaedrus, his rhetorical discourse (...) in the Menexenus, and his literary interpretation in the Protagoras. The paper compares these cases to work out the ground rules, purposes and implications of the Platonic agôn, and the Cratylus etymologies in particular. (shrink)

This paper explores in detail Gorgias' defense of rhetoric in Plato 's Gorgias, noting its connections to earlier and later texts such as Aristophanes' Clouds, Gorgias' Helen, Isocrates' Nicocles and Antidosis, and Aristotle's Rhetoric. The defense as Plato presents it is transparently inadequate; it reveals a deep inconsistency in Gorgias' conception of rhetoric and functions as a satirical precursor to his refutation by Socrates. Yet Gorgias' defense is appropriated, in a streamlined form, by later defenders of rhetoric such as Isocrates (...) and Aristotle. They present it as an effective reductio against a critique of rhetoric that depends on the "harm criterion." This is puzzling, since Plato 's own critique of rhetoric does not depend on the harm criterion. On the other hand, Plato does seem to embrace the harm criterion as a more general principle—as if pre-emptively embracing the reductio —in his arguments about the good in the Meno and Euthydemus. Nonetheless, Isocrates and Aristotle seem to be deliberately misreading Plato on rhetoric: where he intends to criticize its intrinsic nature, they respond as if he were merely complaining about its contingent effects. (shrink)

Although cases are central to the epistemic practices utilized within clinical medicine, they appear to be limited in their ability to provide evidence about causal relations because they provide detailed accounts of particular patients without explicit filtering of those attributes most likely to be relevant for explaining the phenomena observed. This paper uses a series of recent case reports to explore the role of cases in casual attribution in medical diagnosis. It is argued that cases are brought together by practitioners (...) to generate causal attributions and testable predictions using a manipulability view of causation. (shrink)

Narrative analysis, creative writing, and interactive reflective writing have been identified as valuable for professional identity formation and resilience among medical and premedical students alike. This study proposes that medical student blogs are novel pedagogical tools for fostering peer-to-peer learning in academic medicine and are currently underutilized as a near-peer resource for premedical students to learn about the medical profession. To evaluate the pedagogical utility of medical student blogs for introducing core themes in the medical humanities, the authors conducted qualitative (...) analysis of one hundred seventy-six reflective essays by baccalaureate premedical students written in response to medical student-authored narrative blog posts. Using an iterative thematic approach, the authors identified common patterns in the reflective essays, distilled major themes, coded the essays, and conducted narrative analysis through close reading. Qualitative analysis identified three core themes and one overarching theme. The premedical students’ essays demonstrated significant self-reflection in response to near-peer works, discussed their perceptions of medical professionalism, and expressed concerns about their future progress through the medical education system. The essays consistently attributed the impact of the medical student narratives to the authors’ status as near-peers. The authors conclude that reading and engaging in reflective writing about near-peer blog posts encourages premedical students to develop an understanding of core concepts in the medical humanities and promotes their reflection on the profession of medicine. Thus, incorporating online blogs written by medical trainees as narrative works in medical humanities classrooms is a novel pedagogical method for fostering peer-to-peer learning in academic medicine. (shrink)

Simplicius’ project of harmonizing previous philosophers deserves to be taken seriously as both a philosophical and an interpretive project. Simplicius follows Aristotle himself in developing charitable interpretations of his predecessors: his distinctive project, in the Neoplatonic context, is the rehabilitation of the Presocratics (especially Parmenides, Anaxagoras and Empedocles) from a Platonic-Aristotelian perspective. Simplicius’ harmonizations involve hermeneutic techniques which are recognisably those of the serious historian of philosophy; and harmonization itself has a distinguished history as a constructive philosophical method.

The so-called "biometric-Mendelian controversy" has received much attention from science studies scholars. This paper focuses on one scientist involved in this debate, Arthur Dukinfield Darbishire, who performed a series of hybridization experiments with mice beginning in 1901. Previous historical work on Darbishire's experiments and his later attempt to reconcile Mendelian and biometric views describe Darbishire as eventually being "converted" to Mendelism. I provide a new analysis of this episode in the context of Darbishire's experimental results, his underlying epistemology, and his (...) influence on the broader debate surrounding the rediscovery and acceptance of Mendelism. I investigate various historiographical issues raised by this episode in order to reflect on the idea of "conversion" to a scientific theory. Darbishire was an influential figure who resisted strong forces compelling him to convert prematurely due to his requirements that the new theory account for particularly important anomalous facts and answer the most pressing questions in the field. (shrink)

This article takes its bearings from Martha Nussbaum’s “Non-Relative Virtues: An Aristotelian Approach.” There, Nussbaum proposes an analytic framework that is intended to allow those who disagree about the virtues, in particular due to cultural differences, to engage in fruitful dialogue with one another. To explore what such an approach might look like in practice, this article considers the case study of friendship. It critiques Aristotle’s account of that virtue and provides an alternative based on contemporary understandings. By placing these (...) two accounts into conversation, the analysis demonstrates the promise of cross-cultural and cross-historical dialogue about the virtues. (shrink)

In the Metaphysical Foundations of Natural Science, Kant claims that perception of force through touch is fundamental to our knowledge of substance in space. However, he also holds that perception cannot have modal content. Causation is a modal notion, so how can Kant allow perception of causal force? In response to this puzzle, I provide a new reading of Kant’s theory of touch. Touch does not involve perception of the necessity of a cause, but it does involve awareness of the (...) activity of our body in relation to other bodies. Human embodied activity has a hitherto unrecognized central role in Kant’s accounts of empirical cognition of substance in space, the science of such a substance, and the irreducibility of its causal forces. (shrink)

Background: Falls in older adults are a major public health problem. White matter hyperintensities are highly prevalent in older adults and are a risk factor for falls. In the absence of a cure for WMHs, identifying potential strategies to counteract the risk of WMHs on falls are of great importance. Physical activity is a promising countermeasure to reduce both WMHs and falls risk. However, no study has yet investigated whether PA attenuates the association of WMHs with falls risk. We hypothesized (...) that PA moderates the association between WMHs and falls risk.Methods: Seventy-six community-dwelling older adults aged 70–80 years old were included in this cross-sectional study. We indexed PA using the Physical Activity Score for the Elderly Questionnaire. Falls risk was assessed using the Physiological Profile Assessment, and WMH volume was determined by an experienced radiologist on T2-weighted and PD-weighted MRI scans. We first examined the independent associations of WMH volume and PASE score with PPA. Subsequently, we examined whether PASE moderated the relationship between WMH volume and PPA. We plotted simple slopes to interpret the interaction effects. Age, sex, and Montreal Cognitive Assessment score were included as covariates in all models.Results: Participants had a mean age of 74 years and 54 were female. Forty-nine participants had a Fazekas score of 1, 19 had a score of 2, and 6 a score of 3. Both PASE and WMH volume were each independently associated with PPA score. The interaction model indicated that PASE score moderated the association between WMH volume and PPA, whereby higher PASE score attenuated the association between WMHs and falls risk.Conclusion: PA is an important moderator of falls risk. Importantly, older adults with WMH can reduce their risk of falls by increasing their PA. (shrink)

We introduce agreement reducibility and highlight its major features. Given subsets A and B of, we write if there is a total computable function satisfying for all,.We shall discuss the central role plays in this reducibility and its connection to strong‐hyper‐hyper‐immunity. We shall also compare agreement reducibility to other well‐known reducibilities, in particular s1‐ and s‐reducibility. We came upon this reducibility while studying the computable reducibility of a class of equivalence relations on based on set‐agreement. We end by describing the (...) origin of agreement reducibility and presenting some results in that context. (shrink)

El artículo propone una concepción no individualista de la justifi cación epistémica de las decisiones judiciales. Sugiere que la epistemología jurídica debe reconsiderar su teoría de la justifi cación epistémica con el fi n de dar cuenta de la posibilidad de que juzgadores racionales carezcan de autonomía intelectual. Sostiene que la dependencia epistémica es una de las propiedades que distinguen el razonamiento jurídico sobre los hechos, y que los juzgadores tienen buenas razones para aceptar una proposición sobre la base de (...) la experiencia cognitiva de otras personas. Después de hacer algunas precisiones terminológicas acerca de los conceptos de “testimonio” y “evidencia”, el trabajo explica la estructura de la dependencia epistémica, aborda los debates normativos actuales acerca de la justifi cación epistémica en casos de testimonio, y propone una posición externalista distinta, el antiindividualismo. Al fi nal, se explora una variación sobre el tema, que consiste en la integración de la noción de dependencia epistémica en una teoría de la autoridad en el derecho. (shrink)

Other than the ligation of the aortic arch vessels, extracorporeal cardiopulmonary resuscitation (ECPR) and thoraco-abdominal normothermic regional ­perfusion (TA-NRP) in donation after circulatory...

I thank both my critics for their praise, their searching comments and objections, and their careful attention to my book. In the very short time allotted to respond to them both, I will address their objections in an integrated way, following the order of my book.Both Elizabeth Radcliffe and Don Garrett protest that for the last twenty years the noncognitivist reading has not dominated Hume scholarship in the way that I suggest when I include it in the common reading of (...) Hume's metaethics. In the book I admit that noncognitivism is not as popular among experts as the other two elements of the common reading, and I discuss the alternatives to it that have been proposed. But most of those who offer such alternatives. (shrink)

This paper distinguishes between two conceptions of philosophical counseling. The one focuses on the clarification of the individual's psychological and philosophical self and the other on the transcendence of that self. A comparison of the latter conception with the self-transcendence that takes place through Zen Buddhism contributes to the examination of the question of whether philosophical counseling can indeed overcome potential psychological obstacles to attaining a transcendent aim. Possible influences of the integration of psychological intervention into the philosophical search for (...) transcendence are also discussed. (shrink)

We examine the computably enumerable (c.e.) degrees of prime models of complete atomic decidable (CAD) theories. A structure has degree d if d is the degree of its elementary diagram. We show that if a CAD theory T has a prime model of c.e. degree c, then T has a prime model of strictly lower c.e. degree b, where, in addition, b is low (b' = 0'). This extends Csima's result that every CAD theory has a low prime model. We (...) also prove a density result for c.e. degrees of prime models. In particular, if c and d are c.e. degrees with d < c and c not low₂ (c" > 0"), then for any CAD theory T, there exists a c.e. degree b with d < b < c such that T has a prime model of degree b, where b can be chosen so that b' is any degree c.e. in c with d' ≤ b'. As a corollary, we show that for any degree c with 0 < c < 0', every CAD theory has a prime model of low c.e. degree incomparable with c. We show also that every CAD theory has prime models of low c.e. degree that form a minimal pair, extending another result of Csima. We then discuss how these results apply to homogeneous models. (shrink)

Resumo: Pretende-se investigar as raízes semânticas da palavra pragma, buscando-as na Antigüidade grega, tendo por objetivo obter, deste período da história, eventuais subsídios que possam colaborar na melhor compreensão do sentido próprio ao termo pragmatismo.: It is intended to investigate the semantic roots of the Word pragma, searching them in the Greek antiquity, aiming to obtain eventual subsidy from this history period which might cooperate for better comprehension of the proper meaning of term pragmatism.

Aristotle says little about moral badness [kakia], but his four central claims about it su????ce to entail a rich and plausible account. Badness is the disposition opposed to virtue, and so symmetrical with it in various ways; it is acquired by habituation; it is unlike akrasia in that the bad person’s reason endorses his wrong actions; and this endorsement involves the exercise of a corrupted reason. The activity of corrupted reason must be a kind of (as we now say) motivated (...) reasoning—rationalization, denial and the like—which serves to conceal the correct ends of action from the corrupt person and to sustain their habitual bad behaviour. Although badness is located in the non-rational soul, it is this corruption of reason which turns it into a stable disposition. (shrink)

Online educational technologies offer opportunities for providing individualized feedback and detailed profiles of students' skills. Yet many technologies for mathematics education assess students based only on the correctness of either their final answers or responses to individual steps. In contrast, examining the choices students make for how to solve the equation and the ways in which they might answer incorrectly offers the opportunity to obtain a more nuanced perspective of their algebra skills. To automatically make sense of step‐by‐step solutions, we (...) propose a Bayesian inverse planning model for equation solving that computes an assessment of a learner's skills based on her pattern of errors in individual steps and her choices about what sequence of problem‐solving steps to take. Bayesian inverse planning builds on existing machine learning tools to create a generative model relating (mis)‐understandings to equation solving choices. Two behavioral experiments demonstrate that the model can interpret people's equation solving and that its assessments are consistent with those of experienced teachers. A third experiment uses this model to tailor guidance for learners based on individual differences in misunderstandings, closing the loop between assessing understanding, and using that assessment within an educational technology. Finally, because the bottleneck in applying inverse planning to a new domain is in creating the model of possible student misunderstandings, we show how to combine inverse planning with an existing production rule model to make inferences about student misunderstandings of fraction arithmetic. (shrink)

An investigative team of philosophers uncovers the hidden meanings of this weird and puzzling television show.