Chalmers (2002) argues against physicalism in part using the premise that no truth about consciousness can be deduced a priori from any set of purely structural truths. Chalmers (2012) elaborates a detailed definition of what it is for a truth to be structural, which turns out to include spatiotemporal truths. But Chalmers (2012) then proposes to define spatiotemporal terms by reference to their role in causing spatial and temporal experiences. Stoljar (2015) and Ebbers (Ms) argue that this definition of spatiotemporal (...) terms allows for the trivial falsification of Chalmers (2002)’s premise about structure and consciousness. I show that this result can be avoided by tweaking the relevant premise, and moreover that this tweak is well-motivated and not ad hoc. (shrink)

Alter elaborates and defends an ambitious argument advanced by Chalmers against physicalism. As Alter notes, the argument is valid. But I will argue that not all its premises are true. In particular, it is false that all physical truths are purely structural. In denying this, I focus not on the objects of pure physical theory but on the homely, macroscopic objects of our daily lives.

Chalmers argues against physicalism using the premise that no truth about consciousness is deducible a priori from purely structural truths, and later defines what it is for a truth to be structural, which turns out to include spatiotemporal truths. But Chalmers then defines spatiotemporal terms by reference to their role in causing spatiotemporal experiences. Stoljar and Ebbers argue that these definitions allow for the trivial falsification of Chalmers premise about structure and consciousness. I show that this result can be (...) avoided by tweaking the relevant premise, and that this tweak is not ad hoc. (shrink)

The hard problem of consciousness has been a perennially vexing issue for the study of consciousness, particularly in giving a scientific and naturalized account of phenomenal experience. At the heart of the hard problem is an often-overlooked argument, which is at the core of the hard problem, and that is the structure and dynamics (S&D) argument. In this essay, I will argue that we have good reason to suspect that the S&D argument given by David (...) Chalmers rests on a limited conception of S&D properties, what in this essay I’m calling extrinsic structure and dynamics. I argue that if we take recent insights from the complexity sciences and from recent developments in Integrated Information Theory (IIT) of Consciousness, that we get a more nuanced picture of S&D, specifically, a class of properties I’m calling intrinsic structure and dynamics. This I think opens the door to a broader class of properties with which we might naturally and scientifically explain phenomenal experience, as well as the relationship between syntactic, semantic, and intrinsic notions of information. I argue that Chalmers’ characterization of structure and dynamics in his S&D argument paints them with too broad a brush and fails to account for important nuances, especially when considering accounting for a system’s intrinsic properties. Ultimately, my hope is to vindicate a certain species of explanation from the S&D argument, and by extension dissolve the hard problem of consciousness at its core, by showing that not all structure and dynamics are equal. (shrink)

Without a proper restriction on mappings, virtually any system could be seen as implementing any computation. That would not allow characterization of systems in terms of implemented computations and is not compatible with a computationalist philosophy of mind. Information-based criteria for independence of substates within structured states are proposed as a solution. Objections to the use of requirements for transitions in counterfactual states are addressed, in part using the partial-brain argument as a general counterargument to neural replacement arguments.

_The Structure and Dynamics of the Psyche_ first appeared in the _Collected Works_ in 1960. In this new edition bibliographical citations and entries have been revised in the light of subsequent publications in the _Collected Works_, and essential corrections have been made. The book traces an important line of development in Jung's thought from 1912 onwards. The earliest of the papers elaborates Freud's concept of sexual libido into that of psychic energy. In those that follow we see how, (...) Jung, discarding one by one the traditional 'philosophical' hypotheses, gradually arrived at a concept which is even more controversial than psychic energy was in its day ^DDL namely, psychic reality. The book contains the first mention of the archetype in Jung's writings as well as his later views on its nature. There is also a valuable account of the therapeutic uses of 'active imagination' first described in an essay written in 1916. (shrink)

According to the traditional Bayesian view of credence, its structure is that of precise probability, its objects are descriptive propositions about the empirical world, and its dynamics are given by conditionalization. Each of the three essays that make up this thesis deals with a different variation on this traditional picture. The first variation replaces precise probability with sets of probabilities. The resulting imprecise Bayesianism is sometimes motivated on the grounds that our beliefs should not be more precise than (...) the evidence calls for. One known problem for this evidentially motivated imprecise view is that in certain cases, our imprecise credence in a particular proposition will remain the same no matter how much evidence we receive. In the first essay I argue that the problem is much more general than has been appreciated so far, and that it’s difficult to avoid without compromising the initial evidentialist motivation. The second variation replaces descriptive claims with moral claims as the objects of credence. I consider three standard arguments for probabilism with respect to descriptive uncertainty—representation theorem arguments, Dutch book arguments, and accuracy arguments—in order to examine whether such arguments can also be used to establish probabilism with respect to moral uncertainty. In the second essay, I argue that by and large they can, with some caveats. First, I don’t examine whether these arguments can be given sound non-cognitivist readings, and any conclusions therefore only hold conditional on cognitivism. Second, decision-theoretic representation theorems are found to be less convincing in the moral case, because there they implausibly commit us to thinking that intertheoretic comparisons of value are always possible. Third and finally, certain considerations may lead one to think that imprecise probabilism provides a more plausible model of moral epistemology. The third variation considers whether, in addition to conditionalization, agents may also change their minds by becoming aware of propositions they had not previously entertained, and therefore not previously assigned any probability. More specifically, I argue that if we wish to make room for reflective equilibrium in a probabilistic moral epistemology, we must allow for awareness growth. In the third essay, I sketch the outline of such a Bayesian account of reflective equilibrium. Given that this account gives a central place to awareness growth, and that the rationality constraints on belief change by awareness growth are much weaker than those on belief change by conditionalization, it follows that the rationality constraints on the credences of agents who are seeking reflective equilibrium are correspondingly weaker. (shrink)

Hierarchical Bayesian models (HBMs) provide an account of Bayesian inference in a hierarchically structured hypothesis space. Scientific theories are plausibly regarded as organized into hierarchies in many cases, with higher levels sometimes called ‘paradigms’ and lower levels encoding more specific or concrete hypotheses. Therefore, HBMs provide a useful model for scientific theory change, showing how higher‐level theory change may be driven by the impact of evidence on lower levels. HBMs capture features described in the Kuhnian tradition, particularly the idea that (...) higher‐level theories guide learning at lower levels. In addition, they help resolve certain issues for Bayesians, such as scientific preference for simplicity and the problem of new theories. *Received July 2009; revised October 2009. †To contact the authors, please write to: Leah Henderson, Massachusetts Institute of Technology, 77 Massachusetts Avenue, 32D‐808, Cambridge, MA 02139; e‐mail: [email protected]. (shrink)

Hierarchical Bayesian models (HBMs) provide an account of Bayesian inference in a hierarchically structured hypothesis space. Scientific theories are plausibly regarded as organized into hierarchies in many cases, with higher levels sometimes called ‘para- digms’ and lower levels encoding more specific or concrete hypotheses. Therefore, HBMs provide a useful model for scientific theory change, showing how higher-level theory change may be driven by the impact of evidence on lower levels. HBMs capture features described in the Kuhnian tradition, particularly the idea (...) that higher-level theories guide learning at lower levels. In addition, they help resolve certain issues for Bayesians, such as scientific preference for simplicity and the problem of new theories. (shrink)

The contents and structure of semantic memory have been the focus of much recent research, with major advances in the development of distributional models, which use word co‐occurrence information as a window into the semantics of language. In parallel, connectionist modeling has extended our knowledge of the processes engaged in semantic activation. However, these two lines of investigation have rarely been brought together. Here, we describe a processing model based on distributional semantics in which activation spreads throughout a semantic (...) network, as dictated by the patterns of semantic similarity between words. We show that the activation profile of the network, measured at various time points, can successfully account for response times in lexical and semantic decision tasks, as well as for subjective concreteness and imageability ratings. We also show that the dynamics of the network is predictive of performance in relational semantic tasks, such as similarity/relatedness rating. Our results indicate that bringing together distributional semantic networks and spreading of activation provides a good fit to both automatic lexical processing (as indexed by lexical and semantic decisions) as well as more deliberate processing (as indexed by ratings), above and beyond what has been reported for previous models that take into account only similarity resulting from network structure. (shrink)

The _Symposium_ is one of Plato’s most accessible dialogues, an engrossing historical document as well as an entertaining literary masterpiece. By uncovering the structural design of the dialogue, _Plato’s Dialectic at Play _aims at revealing a Plato for whom the dialogical form was not merely ornamentation or philosophical methodology but the essence of philosophical exploration: his dialectic is not only argument, it is also play. Careful analysis of each layer of the text leads cumulatively to a picture of the (...) dialogue’s underlying structure, related to both argument and myth, and shows that a dynamic link exists between Diotima’s higher mysteries and the organization of the dialogue as a whole. On this basis the authors argue that the _Symposium_, with its positive theory of art contained in the ascent to the Beautiful, may be viewed as a companion piece to the Republic, with its negative critique of the role of art in the context of the Good. Following Nietzsche’s suggestion and applying criteria developed by Mikhail Bakhtin, they further argue for seeing the _Symposium_ as the first novel. The book concludes with a comprehensive reevaluation of the significance of the _Symposium_ and its place in Plato’s thought generally, touching on major issues in Platonic scholarship: the nature of art, the body-soul connection, the problem of identity, the relationship between _mythos_ and logos, Platonic love, and the question of authorial writing and the vanishing signature of the absent Plato himself. (shrink)

In this paper a tentative neurophysiologically framed approach of the Freudian unconscious that would function on the basis of linguistic (phonological) organizing principles, is proposed. A series of arguments, coming from different fields, are taken together. First, clinical reports indicate that in a state of high emotional arousal linguistic fragments are treated in a decontextualized way, and can lead to the isolation of phoneme sequences which, independently of their actual meaning, are able to resort emotional effects. Second, phonological and neurophysiological (...) arguments are given to make the case that language processing – be it producing, receiving or imagining language – is a motor event. A crucial distinction is proposed: while contextualized processing correlates on a neurophysiological level with action understanding, and is psychoanalytically akin to secondary processing, decontextualized language processing has a neurophysiological counterpart in object understanding and is psychoanalytically akin to primary processing. Third, isolated speech fragments are therefore considered as objects which, similarly to non-linguistic objects, undergo emotional conditioning and establish an idiosyncratic linguistically structured emotional memory. Phoneme sequences which in this way come to carry high emotional valences are thought to be more readily subject to threaten the bodily integrity, and therefore more readily inhibited. When this inhibition leads to the prevention of effective realization of the voluntary motor output, this is thought to result in the sustained high levels of neuronal activation which seek for release by attracting substitutes that are phonemically similar to the censored speech fragments though they are cognitively non threatening. As a result, the speech of the subject would be particularly concerned with the verbalizations of these substitutive phoneme sequences. In summary, the Freudian unconscious is conceived as the instantiation of a linguistic action space which would be idiosyncratically organized by particular phonemic “phantoms” operating as attractors for the subject’s (linguistic) actions. (shrink)

Philosophy of the Social Sciences, Volume 52, Issue 4, Page 207-234, July 2022. According to Searle’s theory of collective intentionality, the fundamental structure of any society can be accounted for in terms of cooperative mechanisms that create deontic relations. This paper criticizes Searle’s standpoint on the ground that, while his social ontology can make sense of simple systems of interaction like symphony orchestras and football teams, the whole coordinative structure of the modern market society cannot be explained solely (...) in terms of we-intentional collaboration and deontic relations. As clarified by Hayek, because of its complexity, this society is a self-organizing system. It results not only from micro-level agreed constraints, but also from an unintended cybernetic mechanism that affects and shapes both its micro and macro dynamics via a circular causality. Searle ignores the coordination problem posed by complexity and provides strawman arguments against the theory of action underpinning the invisible hand explanation of social phenomena. (shrink)

If societies, like institutions, are built to endure, then the bond that exists between generations must be considered. Constructing a framework to establish a philosophy of future generations, Tiziana Andina explores the factors that make it possible for a society to reproduce over time. Andina's study of the diachronic structure of societies considers the never-ending passage of generations, as each new generation comes to form a part of the new social fabric and political model. Her model draws on the (...) anthropologies offered by classical political philosophies such as Hobbes and Macchiavelli and the philosophies of power as discussed by Nietzsche. She confronts the ethics and function of this fundamental relationship, examines the role of transgenerationality in the formation and endurance of Western democracies and recognizes an often overlooked problem: each new generation must form part of social and political arrangements designed for them by the generations that came before. (shrink)

We propose a theoretical framework that highlights the most important consequences of complexity for the form and evolution of projects and use it to develop a typology of project complexity. This framework also enables us to deepen the understanding of how knowledge production and flexibility strategies enable project participants to address complexity. Based on this understanding, we advance a number of propositions regarding the strategies that can be most effective for different categories of complexity. These results contribute to the integration (...) of various strands in the research on project complexity and provide a roadmap for further research on the strategies for addressing it. (shrink)

This eighth volume of the Collected Works of Jung comprises a collection of essays in which Jung struggles with the basic theoretical problems of his psychology. He brings an impressive erudition to his search for concepts, models and explanatory principles adequate to the refractory psychic phenomena with which he deals. In keeping with Jung's conviction that the psyche is "a thing of such infinite complexity that it can be observed and studied from a great many sides," the essays exhibit a (...) variety of approaches, from the relatively empirical to the frankly speculative. The essays span some forty years of Jung's reflection and, thanks to their arrangement in thematic groupings by the editors, present an interesting study in the refinement of his thought and statement.--J. M. W. (shrink)

In a series of recent papers, two of which appeared in this journal, a group of philosophers, physicists, and climate scientists have argued that something they call the `hawkmoth effect' poses insurmountable difficulties for those who would use non-linear models, including climate simulation models, to make quantitative predictions or to produce `decision-relevant probabilites.' Such a claim, if it were true, would undermine much of climate science, among other things. Here, we examine the two lines of argument the group has (...) used to support their claims. The first comes from a set of results in dynamical systems theory associated with the concept of `structural stability.' The second relies on a mathematical demonstration of their own, using the logistic equation, that they present using a hypothetical scenario involving two apprentices of Laplace's omniscient demon. We prove two theorems that are relevant to their claims, and conclude that both of these lines of argument fail. There is nothing out there that comes close to matching the charac. (shrink)

Sensations can occur in the absence of perception and yet be experienced ‘as if’ seen, heard, tasted, or otherwise perceived. Two concepts used to investigate types of these sensory-like mental phenomena (SLMP) are mental imagery and hallucinations. Mental imagery is used as a concept for investigating those SLMP that merely resemble perception in some way. Meanwhile, the concept of hallucinations is used to investigate those SLMP that are, in some sense, compellingly like perception. This may be a difference of degree. (...) Attempts to reliably differentiate between instances of each type of SLMP remain unresolved. Despite this, the concepts of mental imagery and hallucinations are each routinely used independently of the other. These uses are especially interesting in those published accounts of experiments where equivalent findings about the neuroanatomical correlates of SLMP are reported in support of diverging knowledge-claims about the role of SLMP in neurocognitive processes. This practice presents a puzzle. To examine one aspect of this puzzle, I compare the uses of these two scientific concepts in three ways: examining their roles in differentiating between types of SLMP; exploring how their respective historical developments intersect; and analysing their contributions in neuroimaging experiments. In presenting this series of comparative analyses, I will draw on three themes from historical, philosophical, and social studies of scientific practices: interest in material contributions to knowledge; accounts of how concepts are used in experiments; and explorations of the historical conditions within which current practices emerge. Building on this literature, my comparative analyses supports five related claims. My first claim is that the concepts of mental imagery and hallucinations are each used as independent tools in neuroimaging experiments. My second claim is that, as experimental tools, the concepts of mental imagery and hallucinations are each used for investigating discrete epistemic goals. My third claim is that there are implicit interdependent associations that structure the uses of these two concepts as tools for independently investigating these discrete epistemic goals in neuroimaging experiments. This third claim rests on my analyses of both past and present uses of each concept. Firstly, as seen in their intersecting histories, there are disciplined performances of using the concepts of mental imagery and hallucinations that carry-along shared associations about the mediating role of SLMP in thought. Secondly, these interdependent ‘mediator-view’ associations continue to structure the independent uses of each concept as a tool for investigating SLMP in pursuit of specific goals. Taking this further, my fourth claim is that recognising the structured uses of the concepts of mental imagery and hallucinations can help to account for how equivalent SLMP-neuro-correlates are generated in support of diverging knowledge-claims. Finally, my fifth claim is that the structured uses of these concepts as tools can contribute to experiments in ways analogous to, yet not equivalent with, the active contributions of material instruments. Bringing these claims together, I argue that the concepts of mental imagery and hallucinations operate as structured tools that can actively contribute to the knowledge generated by neuroimaging experiments. In presenting this argument I seek to demonstrate that examining the structured uses of concepts as tools can complement existing approaches to studying how the heterogeneous dynamics of experimental practices can come to contribute to scientific knowledge in unintended ways. (shrink)

Empirical results suggest that defocusing attention results in primary process or associative thought, conducive to finding unusual connections, while focusing attention results in secondary process or analytic thought, conducive to rule-based operations. Creativity appears to involve both. It is widely believed that it is possible to escape mental fixation by spontaneously and temporarily engaging in a more divergent or associative mode of thought. The resulting insight may be refined in a more analytic mode of thought. The question addressed here is: (...) how does the architecture of memory support these two modes of thought, and what is happening at the neural level when one shifts between them? Recent advances in neuroscience shed light on this. It was demonstrated that activated cell assemblies are composed of multiple ‘neural cliques’, groups of neurons that respond differentially to general or context-specific aspects of a situation. I refer to neural cliques that would not be included in the assembly if one were in an analytic mode, but would be if one were in an associative mode, as ‘neurds’. It is posited that the shift to a more associative mode of thought conducive to insight is accomplished by recruiting neurds that respond to abstract or atypical subsymbolic microfeatures of the problem or situation. Since memory is distributed and content-addressable this fosters remindings and the forging of creative connections to potentially relevant items previously encoded in those neurons. Thus it is proposed that creative thought involves neither randomness, nor search through a space of predefined alternatives, but emerges naturally through the recruitment of neurds. It is suggested this occurs when there is a need to resolve conceptual gaps in ones’ internal model of the world, and resolution involves context-driven actualization of the potentiality afforded by its fine-grained associative structure. (shrink)

Utterances of natural language sentences can be used to communicate not just contents, but also forces. This paper examines this topic from a cross-linguistic perspective on sentential mood. Recent work in this area focuses on conversational dynamics: the three sentence types can be associated with distinctive kinds of conversational effects called sentential forces, modeled as three kinds of updates to the discourse context. This paper has two main goals. First, it provides two arguments, on empirical and methodological grounds, for (...) treating sentential force as part of a compositional dynamic semantics, rather than a dynamic pragmatics. Second, it formulates a minimal dynamic semantic analysis that covers the data at the heart of these arguments, incorporating existing analyses of the three major moods, evidentials and conjunction. A further aim of the paper is to sharpen the distinction between sentential force and utterance force, and discuss its implications. (shrink)

Normal.dotm 0 0 1 66 378 Thorbjoern Mann Consulting 3 1 464 12.256 0 false 18 pt 18 pt 0 0 false false false Normal.dotm 0 0 1 80 459 Thorbjoern Mann Consulting 3 1 563 12.256 0 false 18 pt 18 pt 0 0 false false false Arguments commonly used in discussions about design, planning, policy-making issues have not been adequately analyzed in the literature. The structure of such ‘planning arguments’ is discussed. Based on the conceptual framework of (...) the ‘argumentative model of planning’ proposed by H. Rittel, an approach for their systematic and transparent evaluation by discourse participants is presented. Procedural implications for its application in the planning process are discussed, and the potential for information technology support for such processes explored. (shrink)

The literature on theoretical reason has been dominated by epistemological concerns, treatments of practical reason by ethical concerns. This book overcomes the limitations of dealing with each separately. It sets out a comprehensive theory of rationality applicable to both practical and theoretical reason. In both domains, Audi explains how experience grounds rationality, delineates the structure of central elements, and attacks the egocentric conception of rationality. He establishes the rationality of altruism and thereby supports major moral principles. The concluding part (...) describes the pluralism and relativity his conception of rationality accommodates and, taking the unified account of theoretical and practical rationality in that light, constructs a theory of global rationality--the overall rationality of persons. Rich in narrative examples, intriguing analogies, and intuitively appealing arguments, this beautifully crafted book will spur advances in ethics and epistemology as well in philosophy of mind and action and the theory of rationality itself. (shrink)

In this paper, I argue that the dominant view of reflexivity in contemporary social science is overly decontextualized, despite the value that reflexivity scholars have placed on the dynamic and active nature of individual thought and action. While this problem has been highlighted before, in terms of how habitual actions shape the way that individuals engage in reflexive thought, little attention has been given to the ways in which non-internalized elements of the environment condition this process. I illustrate my (...) class='Hi'>argument with examples from Tocqueville’s classic text Democracy in America. I demonstrate how Tocqueville provided a framework for analyzing the way that societal-level norms and opportunity structures impact personal reflexive capacities. In this respect, his work is unparalleled and as such remains relevant to contemporary debates. I therefore argue for the application of Tocqueville’s work into arenas it has seldom entered. (shrink)

Research on electroencephalogram (EEG) characteristics associated with major depressive disorder (MDD) has accumulated diverse neurophysiologic findings related to the content, topography, neurochemistry, and functions of EEG oscillations. Significant progress has been made since the first landmark EEG study on affective disorders by Davidson 35 years ago. A systematic account of these data is important and necessary for building a consistent neuropsychophysiologic model of MDD and other affective disorders. Given the extensive data on frequency-dependent functional significance of EEG oscillations, a frequency (...) domain approach may reveal the types of brain functions involved and disturbed in MDD. In this review, we systematize and integrate diverse and often unconnected observations on the content, topography, neurochemistry, and functions of EEG oscillations involved in MDD within the general concept of an EEG oscillatory pattern. (shrink)

From the seventh to the fourteenth century, the Muslim world’s key actors were free peasants working limited and scattered cultivated areas, whose communities paid heavy taxes. A distinct nomadic mode of production dominated the arid lands and their warlike pastoral tribes. Wealthy merchants and artisans controlled urban ideological production, living next to actual ruling classes, who drew exceptional material privileges from their proximity to the state. Since the latter’s status contradicted the contractual community’s values, political power was socially alienated and (...) needed support from paid soldiers and often co-opted religious notables. The author describes Islamic social formations as real flesh-and-blood beings who developed original features on the same tributary mode of production’s skeleton. He shows that comparable dialectical oppositions enlivened them, stemming from uneven and combined development processes. Thus, their states and villages, barren lands and city markets, contractual ideology and monarchical powers were permanently in conflictual interaction. (shrink)

Argumentation is a dialogical attempt to bring about a desired change in the beliefs of another agent – that is, to trigger a specific belief revision process in the mind of such agent. However, so far formal models of belief revision widely neglected any systematic comparison with argumentation theories, to the point that even the simplest argumentation structures cannot be captured within such models. In this essay, we endeavour to bring together argumentation and belief revision in the same formal framework, (...) and to highlight the important role played by Toulmin’s layout of argument in fostering such integration. (shrink)

Arguments have always played a central role within logic and philosophy. But little attention has been paid to arguments as a distinctive kind of discourse, with its own semantics and pragmatics. The goal of this essay is to study the mechanisms by means of which we make arguments in discourse, starting from the semantics of argument connectives such as `therefore'. While some proposals have been made in the literature, they fail to account for the distinctive anaphoric behavior of `therefore', (...) as well as uses of argument connectives in complex arguments, suppositional arguments, arguments with non-declarative conclusions, as well as arguments with parenthetical remarks. A comprehensive account of arguments requires imposing a distinctive tree-like structure on contexts. We show how to extend our account to accommodate modal subordination and and di fferent flavors of `therefore'. (shrink)

This richly detailed biography captures both the personal life and the scientific career of Isaac Newton, presenting a fully rounded picture of Newton the man, the scientist, the philosopher, the theologian, and the public figure. Professor Westall treats all aspects of Newton's career, but his account centers on a full description of Newton's achievements in science. Thus the core of the work describes the development of the calculus, the experimentation that altered the direction of the science of optics, and especially (...) the investigations in celestial dynamics that led to the law of universal gravitation. (shrink)

This paper develops a logical theory that unifies all three standard types of argumentative attack in AI, namely rebutting, undercutting and undermining attacks. We build on default justification logic that already represents undercutting and rebutting attacks, and we add undermining attacks. Intuitively, undermining does not target default inference, as undercutting, or default conclusion, as rebutting, but rather attacks an argument’s premise as a starting point for default reasoning. In default justification logic, reasoning starts from a set of premises, which (...) is then extended by conclusions that hold by default. We argue that modeling undermining defeaters in the view of default theories requires changing the set of premises upon receiving new information. To model changes to premises, we give a dynamic aspect to default justification logic by using the techniques from the logic of belief revision. More specifically, undermining is modeled with belief revision operations that include contracting a set of premises, that is, removing some information from it. The novel combination of default reasoning and belief revision in justification logic enriches both approaches to reasoning under uncertainty. By the end of the paper, we show some important aspects of defeasible argumentation in which our logic compares favorably to structured argumentation frameworks. (shrink)

Empirical multiple determination (multiple determination, for short) is the epistemic strategy of establishing the same result by means of multiple and independent procedures. It is an important epistemic strategy praised by both philosophers of science and practicing scientists. Commentators from different contexts have referred to multiple determination as one of the main strategies that researchers use to establish the reliability of their results. Multiple determination has been used to address a variety of problems that arise because of the fallibility of (...) experimental procedures. It is generally believed that being able to establish the same result (or provide evidence for a hypothesis of interest) by means of different and independent procedures is somewhat ‘‘better’’ than doing the same by a single procedure. Despite the heavy appeal to the multiple determination strategy, however, not much philosophical analysis has been provided regarding the grounds on which its epistemic desirability and virtues rest. Not much has been said regarding the structure and rationale underlying arguments which rely on multiple determination, and there is no general agreement regarding the epistemological import of these arguments. In my dissertation, I address these issues. More specifically, my dissertation: a. Provides a conceptual clarification of the epistemic strategy of multiple determination by making evident its differences, in both structure and epistemic import, from other notions and epistemic strategies from which it is often not distinguished in the literature such as robustness, consilience of inductions, variety of evidence, etc. b. Traces the historical and philosophical roots of multiple determination in the 19th century philosophical discussions and scientific developments. Especially, it makes the claim that the emergence of empirical multiple determination as a distinctive epistemic strategy emerged as a response to the scientific and philosophical difficulties facing the atomic and molecular hypotheses of matter and, more generally, the study of unobservable entities, in the end of the 19th century. c. Provides a general conceptual framework for understanding the structure and epistemic import of arguments that rely on the application of the multiple determination strategy in actual scientific research. d. The distinctive feature of my dissertation is that it examines its subject matter from a temporal perspective, by paying close attention to the historical emergence and development of the multiple determination strategy. As such, it also considers the implications of the debates regarding the structure and epistemic import of multiple determination for the relationship between history of science and philosophy of science. (shrink)

(2007). Relativity Theory between Structural and Dynamical Explanations. International Studies in the Philosophy of Science: Vol. 21, No. 1, pp. 95-102.

In this paper a candidate for a rational reconstruction of skeptical arguments is presented and defended against a competitor called ‘The Argument from Ignorance’. On the basis of this defense, Michael Williams’ claims that foundationalism and epistemological realism serve as presuppositions for skepticism are criticized. It is argued that rejecting these two theses, as his version of contextualism does, is not sufficient for answering the skeptical challenge.

On the basis of both logical and physical arguments, a majority of philosophers and physicists have opted for the Block View of time in which this ‘passage’ is purely subjective. However, the feeling of the ‘passage’ of time has been left principally unaccounted for in the Block View. It is argued that there are two ways by which the (apparent) ‘passage’ of time is perceived by human beings and it is the combination of these perceptions that gives rise to the (...) deep-seated impression on the conscious mind of a ‘dynamic’ nature of time. In postulating the existence of a specific kind of intrinsic structural difference between the two orientations of time within the Block View, a basis for these two perceptions may be provided. (shrink)

Available from UMI in association with The British Library. Requires signed TDF. ;Kant's extensive discussion of the sublime has received scant attention. This neglect, indeed, is a general characteristic of the reception of Kant's aesthetics in the Anglo-American, and German traditions of philosophy in the twentieth century. The reasons behind it have been usefully summarised by Paul Guyer. ;My approach will be as follows. In Part One of this study , I shall first outline the sublime as it is understood (...) in sources available to Kant--notably the theories of Addison, and Burke. I will then trace how Kant adapts these approaches in his pre-Critical aesthetics, and how he goes beyond them by, in effect, stipulatively defining the sublime as a moral concept in his Critical ethics. In Part Two I will first set the scene for a consideration of Kant's mature theory of the sublime, by discussing how moral factors shape the overall strategy in The Critique of Judgement, and also figure in his account of the judgement of taste. I shall then go on to elaborate and critically review Kant's structures and sources of argument in those sections of the third Critique that deal with judgements of sublimity. In particular, I will argue that whilst his theory of sublimity does fit in well with the overall strategy of the third Critique, the pressures exerted upon it by the Critical ethics are such that he does not succeed in establishing the credentials of sublimity as an aesthetic concept. In Part Three , however, by using some of Kant's basic insights, I will hope to establish these credentials and to apply the theory so derived, to the work of art. I will then proceed to some more general conclusions. ;Considering the wide ground to be covered by this study, and the necessary limitations on its length, it will not be possible to give Kant's concepts and arguments the kind of extensive and finely detailed analysis which has been provided by Paul Guyer. I will be concerned, rather, to provide working definitions of Kant's major concepts, and to trace the broad development of his arguments. (shrink)

Physicalism is the idea that everything either is physical or is nothing over and above the physical. For this formulation of physicalism to have determinate content, it should be identified what the “physical” refers to; i.e. the body problem. Some other closely related theses, especially the ones employed in the causal arguments for different versions of physicalism, and more especially the causal closure thesis, are also subject to the body problem. In this paper, I do two things. First, I explore (...) the structure of causal arguments for physicalism that represents a general argument. To do this, the premises and the conclusion of the general argument are given exact formulations. Second, drawing on those premises, especially the causal closure thesis, I propose a naturalistic formulation of the physical that satisfies the requirements any formulation of the physical is expected to fulfill. Following this proposal, we also have a recursive algorithm to recognize the set of all physical events. (shrink)

Every physical theory has two different forms of mathematical equations to represent its target systems: the dynamical and the kinematical. Kinematical constraints are differentiated from equations of motion by the fact that their particular form is fixed once and for all, irrespective of the interactions the system enters into. By contrast, the particular form of a system's equations of motion depends essentially on the particular interaction the system enters into. All contemporary accounts of the structure and semantics of physical (...) theory treat dynamics, i.e., the equations of motion, as the most important feature of a theory for the purposes of its philosophical analysis. I argue to the contrary that it is the kinematical constraints that determine the structure and empirical content of a physical theory in the most important ways: they function as necessary preconditions for the appropriate application of the theory; they differentiate types of physical systems; they are necessary for the equations of motion to be well posed or even just cogent; and they guide the experimentalist in the design of tools for measurement and observation. It is thus satisfaction of the kinematical constraints that renders meaning to those terms representing a system's physical quantities in the first place, even before one can ask whether or not the system satisfies the theory's equations of motion. (shrink)