This article reports three experiments that investigated the relationship between working memory capacity and syllogistic and five-term series spatial inference. A series of complex and simple verbal and spatial working memory measures were employed. Correlational analyses showed that verbal and spatial working memory span tasks consistently predicted syllogistic and spatial reasoning performance. A confirmatory factor analysis showed that three factors best accounted for the data--a verbal, a spatial, and a general factor. Syllogistic reasoning performance loaded all three factors, whilst spatial (...) reasoning loaded only the general factor. The implications of these findings are discussed in the context of reasoning theories and contemporary accounts of the structure of working memory. (shrink)
This article treats the political thought of Simón Bolívar, a leading figure in South America's struggle for independence. It describes Bolívar's ideas by reference to both their broadly Atlantic origins and their specifically American concerns, arguing that they comprise a theory of `republican imperialism', paradoxically proposing an essentially imperial project as a means of winning and consolidating independence from European rule. This basic tension is traced through Bolívar's discussions of revolution, constitutions, and territorial unification, and then used to frame a (...) comparison with the founders of the United States. It suggests, in closing, that contextual similarities amongst the American revolutions make them particularly apt subjects for comparative study of the history of political thought. (shrink)
Acquaintance with the Absolute is the first collected volume of essays devoted to the thought of Yves r. Simon, a thinker widely regarded as one of the great teachers and philosophers of our time. Each piece in this collection of essays thoughtfully complements the others to offer a qualifiedly panoramic look at the work and thought of philosopher Yves R. Simon. The six essays presented not only treat some major areas of Simon’s thought, pointing out their lucidity (...) and originality, but also his underpinning metaphysics, so central to his thought. Rather than attempt to present all aspects of this patient, careful, and penetrating thinker, these essays select enough to situate Simon’s philosophical excavations – especially his moral, political and action theory – among contemporary Thomistic philosophy. In defending philosophy as a valid way of knowing, Simon gives us an approach we can use to avoid contemporary dilemmas in the philosophy of science. Simon holds that philosophical truths both justify scientific method as a way of knowing the real and provide a basis for distinguishing what is ontologically significant in a scientific theory from what is not. This view allows us to avoid the apparently irrational conclusions of quantum mechanics without reducing scientific theories to being mere projections of our conceptual systems. Though aspects of some of the essays are suited for students of Simon’s thought, the essays as a whole introduce the less familiar reader to this great thinking and, further, invite him or her to pursue Simon’s own texts. The volume is enhanced by the inclusion of a definitive Yves R. Simon bibliography 1923-1996. The annotated bibliography is cross-reference in detail, revealing the astonishing variety of topics Simon treated. (shrink)
The aim of the present research was to develop a difficulty model for logical reasoning problems involving complex ordered arrays used in the Graduate Record Examination. The approach used involved breaking down the problems into their basic cognitive elements such as the complexity of the rules used, the number of mental models required to represent the problem, and question type. Weightings for these different elements were derived from two experimental studies and from the reasoning literature. Based on these weights, difficulty (...) models were developed which were then tested against new data. The models had excellent predictive validity and showed the relative influence of rule based factors and factors relating to the number of underlying models. Different difficulty models were needed for different question types, suggesting that people used a variety of approaches and, at a wider level, that both mental models and mental rules may be used in reasoning. (shrink)
The ability to reason independently from one's own goals or beliefs has long been recognised as a key characteristic of the development of formal operational thought. In this article we present the results of a study that examined the correlates of this ability in a group of 10-year-old children ( N = 61). Participants were presented with conditional and relational reasoning items, where the content was manipulated such that the conclusion to the arguments were either congruent, neutral, or incongruent with (...) beliefs, and either logically valid or logically invalid. Participants also received a measure of working memory capacity (the counting span task) and a measure of inhibitory control (the stop signal task). Indices of belief bias and logical reasoning on belief-based problems were predicted independently by both measures. In contrast logical reasoning on belief neutral problems was predicted by working memory alone. The findings suggest that executive functions play a key role in the development of children's ability to decontextualise their thinking. (shrink)
The focus of this paper is two-fold. First, similarities generated from six semantic models were compared to human ratings of paragraph similarity on two datasets—23 World Entertainment News Network paragraphs and 50 ABC newswire paragraphs. Contrary to findings on smaller textual units such as word associations (Griffiths, Tenenbaum, & Steyvers, 2007), our results suggest that when single paragraphs are compared, simple nonreductive models (word overlap and vector space) can provide better similarity estimates than more complex models (LSA, Topic Model, SpNMF, (...) and CSM). Second, various methods of corpus creation were explored to facilitate the semantic models’ similarity estimates. Removing numeric and single characters, and also truncating document length improved performance. Automated construction of smaller Wikipedia-based corpora proved to be very effective, even improving upon the performance of corpora that had been chosen for the domain. Model performance was further improved by augmenting corpora with dataset paragraphs. (shrink)
The tradition of natural law is one of the foundations of Western civilization. At its heart is the conviction that there is an objective and universal justice which transcends humanity’s particular expressions of justice. It asserts that there are certain ways of behaving which are appropriate to humanity simply by virtue of the fact that we are all human beings. Recent political debates indicate that it is not a tradition that has gone unchallenged: in fact, the opposition is as old (...) as the tradition itself. By distinguishing between philosophy and ideology, by recalling the historical adventures of natural law, and by reviewing the theoretical problems involved in the doctrine, Simon clarifies much of the confusion surrounding this perennial debate. He tackles the questions raised by the application of natural law with skill and honesty as he faces the difficulties of the subject. Simon warns against undue optimism in a revival of interest in natural law and insists that the study of natural law beings with the analysis of “the law of the land.” He writes not as a polemicist but as a philosopher, and he writes of natural law with the same force, conciseness, lucidity and simplicity which have distinguished all his other works. (shrink)
Precautionary Criminalisation in an Age of Vulnerable Autonomy Content Type Journal Article Category Book Review Pages 1-3 DOI 10.1007/s11572-012-9142-4 Authors Jonathan Simon, Adrian A Kragen Professor of Law, University of California, Berkeley, CA, USA Journal Criminal Law and Philosophy Online ISSN 1871-9805 Print ISSN 1871-9791.
Ursula Klein and E. C. Spary (eds): Materials and expertise in early modern Europe: Between market and laboratory. Chicago: University of Chicago Press, 2010, 408pp, $50 HB Content Type Journal Article DOI 10.1007/s11016-010-9462-8 Authors Jonathan Simon, LEPS-LIRDHIST (EA 4148), Université Lyon 1, Université de Lyon, 69622 Villeurbanne cedex, France Journal Metascience Online ISSN 1467-9981 Print ISSN 0815-0796.
This long-awaited book is the first English-language edition of.Simon’s first book, Critique de la connaissance morale (1934). Not only does this work clarify the first stages of Simon’s intellectual career, it is also a major contribution to moral philosophy. A Critique of Moral Knowledge addresses fundamental issues. How does moral knowledge differ from other practical knowledge? What is the relationship between the moral sense, moral philosophy, and cognition in action? Is politics moral philosophy or simply a neutral technique? (...) This elegant translation will be an important contribution to the conversation on philosophy, politics, religion, and ethics. (shrink)
For Yves R. Simon, philosophy has an affinity to science, not in the sense that philosophy is a mere metascience, a commentary on the sciences, but rather because it shares the same aim as science: the search for explanation. The philosophy Simon espouses is philosophical realism which, following Jacques Maritain, he prefers to call critical realism. Against the prejudice that only some version of philosophical idealism, be it critical or absolute, is capable of understanding positive science. Simon, (...) in Foresight and Knowledge, develops a philosophy of science form a realistic perspective. Philosophy of science or the critique of science, as it was known in France, is according to Simon, metahphysics in the exercise of its critical function. Simon selects as the central focus of the treatise the problem of determinism, causality, and chance. Simon shows that the concept “determinism” must be understood in different conceptual systems, such as a philosophy of nature and physics; in the latter, determinism is conceived as a possibility of certain and exact prediction. (shrink)
A Psicoterapia Breve Operacionalizada - PBO é uma modalidade terapêutica formulada tendo como referência a teoria psicanalítica e a teoria da adaptação de R. Simon. A formação do psicoterapeuta tem sido realizada em Cursos de Pós-Graduação lato sensu na UNIP - Universidade Paulista. Atende à demanda..
Yves R. Simon (1903-1961) was one of this century’s greatest students of the virtue of practical wisdom. Simon’s interest in this virtue ranged from ultimate theoretical and foundational concerns, such as the relationship between practical knowledge and science, to the most concrete and immediate questions regarding the role of practical wisdom in personal and social decision-making. These concerns occupied Simon from his earliest published writing to the final notes and correspondence he was working on at the moment (...) of his untimely death. Throughout his life, practical wisdom and its related philosophical ramifications emerge time and again at critical junctures, throwing into bold relief some of the deeper dimensions of questions as diverse as the nature of democracy, the concept of law, and the theory of work. Practical knowledge constitutes a unifying motif of Simon’s entire encyclopedic effort. This volume reconstructs what would have been Simon’s final sustained writing on practical knowledge. It includes reworking of some previously published material, especially the landmark 1961 essay, "Introduction to the Study of Practical Wisdom," possibly the best treatment of the concept of "command" in recent philosophical writing. But it also reproduces, in a form closely corresponding to Simon’s intention, material drawn from notes and schemata, concerning issues such as the relationship between moral science and wisdom, the nature of practical judgment, and the relationship between practical knowledge and Christian moral philosophy. Also included are previously unpublished letters to Jacques Maritain on the controversy surrounding the theoretical-practical and practico-practical syllogisms, as well as Maritain’s responses. The volume concludes with applications of Simon’s general theory to a critique of the concept of a social science and to the notion of Christian humanism. This volume will appeal to moral philosophers interested in a range of normative issues, as well as social scientists and readers concerned with the philosophical foundations of modern culture. Virtue moralist, in particular, will find in Simon one of the profoundest commentators on this tradition in normative ethics. (shrink)
Based on ten years of research, The Touch of the Past considers how historically traumatic events uniquely summon forgetting and remembrance. Within a specific focus on events of systemic mass violence, Roger Simon examines how testimonies of historic events influence learning as communities struggle with "difficult histories." The Touch of the Past is a serious and compelling contribution to research in education, historical consciousness, and memory/trauma studies.
When dealing with the moving worlds of migration among the Persian diaspora in Australia, memories cannot simply be removed to dusty attic boxes to be stored as an archive. Rather, this analysis takes the body and its sensory engagement with the world as a central focus, arguing that memories are crafted, tasted, smelt and touched in everyday temporalities. In the kitchens and lounges of Persian migrant women the lived past refuses to become undone from the countless revolutions of food, talk (...) and domestic activity that are central to the patterning of memory. In this paper, we argue that these intimate practices have references beyond their domestic dimensions, for they point to a worldly movement of life writ domestically small. It is via a sensory network that the spatially and temporally disparate worlds of homeland and new homes are remembered and forgotten, and where miniature worlds call out to the movement of migration. Indo-Pacific Journal of Phenomenology , Volume 7, Edition 2 September 2007. (shrink)
: Ursula Le Guin's "The Ones Who Walk Away from Omelas" (1973), a staple of short fiction anthologies, was inspired by James's "The Moral Philosopher and the Moral Life." In Le Guin's moral tale, a devastating bargain causes some citizens of Omelas to reject their apparently utopian community. Although critics have seen this rejection as a Jamesian act of pragmatism and free will, this essay examines the story in the context of "The Moral Philosopher" and other writings by James on (...) pragmatism, its moral consequences, free will, and faith to refute that conclusion. I argue, instead, that James's work suggests responses that reflect his thinking about the limits and meaning of possibility and about sustaining belief in a transcendent force. (shrink)
This paper explores Simon Stevin’s l’Arithmétique of 1585, where we find a novel understanding of the concept of number. I will discuss the dynamics between his practice and philosophy of mathematics, and put it in the context of his general epistemological attitude. Subsequently, I will take a close look at his justificational concerns, and at how these are reflected in his inductive, a postiori and structuralist approach to investigating the numerical field. I will argue that Stevin’s renewed conceptualisation (...) of the notion of number is a sort of “existential closure” of the numerical domain, founded upon the practice of his predecessors and contemporaries. Accordingly, I want to make clear that l’Aritmetique have to be read not as an ontological analysis or exploration of the numerical field, but as an explication of a mathematical ethos. In this sense, this article also intends to make a specific contribution to the broader issue of the “ethics of geometry.”. (shrink)
My aim here is to raise a few questions concerning the problem of representation in scientific discovery computer programs. Representation, as Simon says in his paper, "imposes constraints upon the phenomena that allow the mechanisms to be inferred from the data". The issue is obviously barely outlined by Simon in his paper, while it is addressed in detail in the book by Langley, Simon, Bradshaw and Zytkow (1987), to which I shall refer in this note. Nevertheless, their (...) analysis would appear to leave open certain issues related to the nature of the "constraints" imposed by representation on problem solving strategies. (shrink)
In the standard Simon task, participants carry out spatially defined responses to non-spatial stimulus attributes. Responses are typically faster when stimulus location and response location correspond. This effect disappears when a participant responds to only one of the two stimuli and reappears when another person carries out the other response. This social Simon effect has been considered as providing an index for action co-representation. Here, we investigated whether joint-action effects in a social Simon task involve mechanisms of (...) action co-representation, as measured by the amount of incorporation of another person’s action. We combined an auditory social Simon task with a manipulation of the sense of ownership of another person’s hand (Rubber Hand Illusion). If the social Simon effect is established by action co-representation, then the incorporation of the other person’s hand into one’s own body representation should increase the social Simon effect (synchronous > asynchronous stroking). However, we found the social Simon effect to be smaller in the synchronous as compared to the asynchronous stroking condition (Experiment 1), suggesting that the social Simon effect reflects the separation of spatial action events rather than the integration of the other person’s action. This effect is independent of the active involvement (Experiment 2) and the presence of another person (Experiment 3). These findings suggest that the ‘social’ Simon effect is not really social in nature but is established when an interaction partner produces events that serve as a spatial reference for one’s own actions. (shrink)
This study aimed at assessing whether the mere belief of performing a task with another person, who is in charge of the complementary part of the task, is sufficient for the so-called joint Simon effect to occur. In all three experiments of the study, participants sat alone in a room and underwent two consecutive Go/NoGo tasks that were identical except for the instructions. In Experiment 1, participants performed the task first individually (baseline task), and then either co-acting with another (...) person who responded from an unknown location to the NoGo stimuli (joint task) or imaging themselves responding to the NoGo stimuli (imaginative task). Relative to the baseline, the instructions of the imaginative task made the Simon effect occur, while those of the joint task were ineffective in eliciting the effect. This result suggests that sharing a task with a person who is known to be in charge of the complementary task, but is not physically present, is not sufficient to induce the representation of an alternative response able to produce interference, which happens instead when the instructions explicitly require to imagine such a response. Interestingly, we observed that when the Simon effect was already present in the baseline task (i.e., when the response alternative to the Go response was represented in the individual task due to non-social factors), it disappeared in the joint task. We propose that, when no information about the co-actor’s position is available, the division of labor between the participant and co-actor allows participants to filter out the possible (incidental) representation of the alternative response from their task representation, thus eliminating potential sources of interference. This account is supported by the results of Experiments 2 and 3 and suggests that under certain circumstances task-sharing may reduce the interference produced by the irrelevant information, rather than increase it. (shrink)
En este trabajo intentamos un acercamiento a la filosofía social desarrollada por Simón Rodríguez en el conjunto de sus escritos reflexivos sobre la realidad político social hispanoamericana de la primera mitad del siglo XIX. Argumentamos que su examen de los problemas de las repúblicas hispanoamericanas constituyen una investigación crítica en el sentido moderno de este término, esto es, una investigación sobre las condiciones de posibilidad mismas de la comunidad como espacio del buen vivir. En este sentido, su trabajopropone la aplicación (...) de criterios, como el dominio del idioma español y el cambio de costumbres, para reformar la cultura. Se concluye que su filosofía social reivindica el papel de la comunidad en las necesarias transformaciones sociales que requiere la vida republicana en América del Sur, por supuesto, sin soslayar la importancia manifiesta que tienen los individuos como agentes concretos de cambio. Simon Rodriguez: his social philosophyIn thispaper we attemptan approach tosocialphilosophydeveloped bySimon Rodriguezon the set ofhis reflectivewritingsonLatin Americansocial and politicalrealityin the first halfof the nineteenth century.We argue thatconsiderationof the problemsof theAmerican republicsare acritical research, inthe modern sense ofthe term,that is,an inquiry intothe conditions of possibilityof this particular community of nationsasa good livingspace. In thissense, thepaper proposesthe applicationof certain criteria such asSpanishlanguage proficiencyand changingof habits,to reform theculture.We conclude thatsocialphilosophyclaims the roleof the community inthe necessarysocial changesrequirea republicin South America, of course, without ignoringthe importancethat individualsmanifestasindividualagentsof change. (shrink)
The Social Simon effect (SSE) occurs if two participants share a Simon task by making a Go/No-Go response to one of two stimulus features. If the two participants perform this version of the Simon task together, a Simon effect occurs (i.e., performance is better with spatial stimulus-response correspondence), but no effect is observed if participants perform the task separately. The SSE has been attributed to the automatic co-representation of the co-actor’s actions, which suggests that it relies (...) on online information about the other’s actions. To test this implication, we investigated whether the SSE varies with the presence and amount of online action-related feedback from the other person. Experiment 1 replicated the SSE with auditory stimuli. Experiment 2, in which participants were blindfolded, demonstrated that visual feedback from the other’s actions is not necessary for the SSE to occur. Experiment 3 replicated Experiment 2 with a regular and a soundless keyboard. A comparable SSE was obtained in both conditions, suggesting that even auditory online input from the other’s actions is not necessary. Taken together, our data suggest that the SSE does not rely on online information about the co-actor’s actions but that a priori offline information about the other’s mere presence is sufficient to generate the effect. (shrink)
Cambridge professor Simon Blackburn is best known to the general public as the author of several books of popular philosophy such as ink, Being Good andTruth: a Guide for the Perplexed. Academic philosophers also know him as the author of one of the most important books of contemporary moral philosophy, Ruling Passions, and as a former editor of the leading journal Mind.
Hugh Everett III died of a heart attack in July 1982 at the age of 51. Almost 26 years later, a New York Times obituary for his PhD advisor, John Wheeler, mentioned him and Richard Feynman as Wheeler’s most prominent students. Everett’s PhD thesis on the relative state formulation of quantum mechanics, later known as the “Many Worlds Interpretation”, was published (in its edited form) in 1957, and later (in its original, unedited form) in 1973, and since then has given (...) rise to one of the most radical schools of thought in the foundations of quantum theory. Several years ago two conferences held in Oxford and in the Perimeter Institute celebrated the occasion of 50 years to the first publication of Everett’s thesis. The book Many worlds? grew out from contributions to these conferences, but, as its editors emphasize, it is more than mere conference proceedings. Instead, an attempt was made to assemble an impressive collection of papers which together illustrate the promise of the many worlds interpretation and the obstacles it faces. 23 papers divided into six sections follow an introduction by Simon Saunders, one of Oxford’s fiercest Everettians. The first four sections cover two thorny issues that have been flagged by contemporary opponents to the many worlds interpretation, namely, the problem of ontology and the problem of probability, while the fifth discusses alternatives to Everett such as Bohmian mechanics and information–theoretic approaches to quantum theory. The sixth section seems to be a wild card, hosting several papers unrelated to each other, including one of the most interesting contributions to this volume on the history of Everett’s thesis and his (some may say all too) short academic career. Each section concludes with transcripts of the discussion session that took place after the talks, thus giving an additional emphasis to the points of contention. Apart from general comments on the volume, in what follows I would like to concentrate on few papers I found especially illuminating. Start with ontology.. (shrink)
Herbert Simon (1916–2001) was definitely 20th century’s most influential proponent of bounded rationality. His work was of a highly philosophical nature, but—as made clear time and again in this book—his ideas did not originate in philosophy at all. If the present collection of essays has any value to the philosophically oriented reader, it lies in the way it shows how a traditionally philosophical topic as human rationality and action cannot be claimed by philosophy alone. Even more, it shows that (...) important contributions to the issue were made in a highly applied context. Therefore, even if Models of a Man: Essays in Memory of Herbert Simon is all but a philosophy textbook (only one contribution is by a ‘professional philosopher’), it is of interest to anyone taking Simon’s influence in philosophy seriously. (shrink)
Fifty years ago, Herbert Simon (1955, 1997) complained that the available models of rational choice were not feasible decision procedures for agents like us. These models involved variants on the theme of maximizing expected utility: the rational action for an agent is the one that is most likely to bring about outcomes that the agent prefers. Simon’s complaints about these models included the now-familiar notions that human beings do not manage probabilities well, that we have at (...) best radically incomplete utility functions, and that we lack the cognitive resources to calculate the expected utilities of even a few alternatives. (shrink)
Do Buddhist ‘moral’ principles, such as generosity, equanimity, and compassion, consistently map onto Greek and, more generally, Western ‘virtues’? In other words, is it at all possible to talk about a Buddhist ‘virtue ethics’? Should equanimity, for instance, be understood as having the same function in Buddhist moral thought as temperance has for Plato, Aristotle, or the Stoics? Does the Buddha’s effort to embody certain cardinal virtues (sīla) resemble the classical Greek and Roman pursuit of a life of personal flourishing (...) (eudaimonia)? And, to take one step further – Is Buddhism’s perceived enlightened attitude toward the environment suggestive of a new ethics aimed at confronting the global ecological crisis? Buddhism, Virtue, and Environment, a volume co-authored by David Cooper and Simon James, addresses these questions and concerns in a systematic and philosophically sophisticated way. (shrink)
: Dennis Des Chene's Physiologia: Natural Philosophy in Late Aristotelian and Cartesian Thought reconstructs the discourse of late scholastic natural philosophy, and assesses Descartes' agreements and disagreements. In a critical discussion, I offer a different interpretation of late scholastic theories of final causality and of God's concursus with created efficient causes. Fonseca's and Suárez' conceptions of final causality in nature depend on their claim that a single action can be the action of two agents at once--in particular, of God (...) and of a creature. I discuss both their theory of action and its implications for natural teleology. I then compare Descartes, emphasizing his demolition of the Aristotelian hierarchy of causes, with unmoved movers (culminating in God) regulating the action of inferior moved movers. Aristotle argues that unmoved causes are needed to produce a stable world-order; he takes arts (tÁxnai) as his models of unmoved causes, and uses this model to support natural teleology. Descartes radically simplifies this system by denying all unmoved movers other than God, and denying anything analogous to an art in non-human nature. I explore the implications for Descartes' notion of concursus and his criticism of natural teleology, and discuss his resulting difficulties in explaining natural stability. (shrink)
The highlight of Simon Critchley's small book On Humor (2002) is the inclusion of seven beautiful prints by Charles Le Brun at the start of each chapter. Le Brun's captivating drawings are zoomorphic studies of the human face, each in relation to a different animal.
This article attempts to respond to Simon Critchley's claim in a recent debate with Richard Rorty, that the latter, by not fully recognizing its indebtedness to Levinas, misunderstands the political import of the work of Jacques Derrida. I maintain, pace Critchley, that trying to push the Derrida-Levinas connection too far will not only further compound Rorty's view of Derrida as a thinker devoid of political efficacy, but that it will moreover serve to obscure the significant differences which exist (...) between Levinas and Derrida - differences which cannot be overlooked in any serious discussion of the two thinkers in question. In the second half, I try to convince Critchley that what separates Derrida from Levinas is precisely what hooks him up with Rorty at a political level. Both, I argue, are committed to a civic religion of social hope. In so doing, I try to convince Rorty that his caricature of Derrida as a private writer without political consequence, ought now to be seriously reconsidered. Key Words: community Critchley democracy Derrida ethics justice law Levinas politics religion Rorty sentiment singularity social hope. (shrink)
Shepard promotes the important view that evolution constructs cognitive mechanisms that work with internalized aspects of the structure of their environment. But what can this internalization mean? We contrast three views: Shepard's mirrors reflecting the world, Brunswik's lens inferring the world, and Simon's scissors exploiting the world. We argue that Simon's scissors metaphor is more appropriate for higher-order cognitive mechanisms and ask how far it can also be applied to perceptual tasks. [Barlow; Kubovy & Epstein; Shepard].
Although on opposite sides of the logic of discovery debate, Laudan and Simon share a thesis of divorce between discovery (invention) and justification (appraisal); but unlike some other authors, they do not base their respective versions of the divorce-thesis on the empirical/logical distinction. Laudan argues that, in contemporary science, invention is irrelevant to appraisal, and that this irrelevance renders epistemically pointless the inventionist program. Simon uses his divorce-thesis to defend his account of invention, which he claims to be (...) non-inductive--so evading the problem of induction. Underlying both authors' positions are inadequate conceptions of inductive inference. Laudan here ignores the role in contemporary science of plausibility arguments, which provide a crucial link between invention and appraisal, and thence an epistemic rationale for inventionism. Simon's account of invention does covertly call upon inductive principles from the context of appraisal, and this is what gives his program epistemic import; otherwise he would be vulnerable to Laudan's "no rationale" critique. The tensions in both authors reveal the falsity of the divorce-thesis, and the essential function of induction in both appraisal and invention of hypotheses. (shrink)