The paper puts forward the thesis of conceptual pragmatism: that there are pragmatic choices to be made between distinct but similar concepts within various contexts. It is argued that this thesis should be acceptable to all who believe in concepts, whether the believers are platonists, realists or anti-realists. It is argued that the truth of the thesis may help to resolve many long-standing debates, and that in any case it will lead to an extension of philosophical method. The paper then (...) briefly considers the concepts of belief and desire as a case-study, and argues for the recognition of the practical reasoner's stance (to stand alongside Dennett's intentional stance), relative to which we should select concepts of belief and desire which are broadly cartesian. (shrink)

This paper examines Hilary Putnam’s arguments against what he calls metaphysical realism and in favour of internal realism. A key notion is the one of conceptual scheme, whose role is to explain how we inevitably find ourselves adopting one viewpoint among possible others. To ensure the possibility of agreement between all inquirers for some basic issues, is Putnam committed to having just one conceptual scheme for all human inquirers? The paper argues that the answer is no, on condition that all (...) inquirers are assumed to have a kind of cognitive faculty that is common to all. (shrink)

The “happy fish” passage concluding the “Autumn Floods” chapter of the Classical Chinese text known as the Zhuangzi has traditionally been seen to advance a form of relativism which precludes objectivity. My aim in this paper is to question this view with close reference to the passage itself. I further argue that the central concern of the two philosophical personae in the passage – Zhuangzi and Huizi – is not with the epistemic standards of human judgements (the established view since (...) Hansen, “The Relatively Happy Fish”), but with the more basic problem of species-specific perspectives. On my reading, Zhuangzi’s emphatic positionality in the passage – on the dam, accompanied by his friend Huizi – plausibly suggests a circumspect reflection on the limitedness of human knowledge. It is significant that Zhuangzi’s knowledge of fish happiness is avowedly from a certain place, and not absolute. But there is still a sense in which this view is objective: namely, insofar as it adequately accounts for an inherently human perspective on the world. I call this modest form of relativism ‘Species Relativism’, which, crucially, leaves room for objectivity, even though a fully objective (i.e. absolute) view of the world is not accessible to humans. (shrink)

Davidson approaches the notions of meaning and interpretation with the aim of characterizing semantic competence in the syntactically characterized natural language. The objective is to provide a truth-theory for a language, generating T-sentences expressed in the semantic metalanguage, so that each sentence of the object language receives an appropriate interpretation. Proceeding within the constraints of referential semantics, I will argue for the viability of reconstructing the notion of linguistic meaning within the Tarskian theory of reference. However, the view proposed here (...) involves a revision of Davidson’s con-ception of the object of semantic investigation. Taking (idealized) language-theories as the proper object of semantic characterization, provides solutions to outstanding problems in Davidson’s views, better approximates the practice in standard model-theoretic semantics, and incorporates the elements of semantic competence sought for in tradi¬tional theories of lexical analysis. Sources of evidence beyond those emphasized by Davidson will be invoked in order to allow for the selection of interpre¬tive T-sentences. In the final section, possible Quinean objections will be considered. (shrink)

A chief aim of this paper is to provide common ground for discussion of outstanding issues between defenders of classical logic and contemporary advocates of intuitionistic logic. In this spirit, I draw upon (and reconstruct) here the relationship between dialogue and evidence as emphasized in German constructivist authors. My approach depends upon developments in the methodology of empirical linguistics. As a preliminary to saying how one might decide between these two versions of logic (this issue is most closely approached in (...) Section V. discussing the constructivist approach), it is well worth the effort to look closely at how logic is (or might be) learned and at questions concerning logic in translation, i.e., the question of how we might detect the variety of logic actually employed in a given speech community. (shrink)

Realism about the external world enjoys little philosophical support these days. I rectify this predicament by taking a relatively pragmatist line of thought to defend commonsense realism; I support commonsense realism through an interpretation and application of Donald Davidson’s notion of triangulation, the triangle composed of two communicators coordinating and correcting their responses with a shared causal stimulus. This argument is important because it has a crucial advantage over the often used abductive argument for realism. My argument avoids unwarranted conclusions, (...) whereas the abductive argument is “inflationary” because it reaches beyond the limits of evidence for its realist conclusion. To illustrate the problems of the abductive argument and motivate my Davidsonian approach, I take a brief look at the abductive argument for realism in Frederick Will’s work. (shrink)

ABSTRACT Relativism and discussions of the relativity of human judgment have played an important role in philosophy since the 1950s. Such claims are regarded by many as the enemy of realism, the view that human judgments can be valid with respect to their objects as those objects obtain independent of the judgments. Most relativisms assert the relativity of human judgment to some trait of the judge, hence are anthropic. But there is another kind: objective relativism. It was espoused by some (...) of the American pragmatists of the early to mid-twentieth century. Their hope was that objective relativism was compatible with realism while avoiding dualism and idealism. It claimed things themselves are relative. The view eventually disappeared. This article examines this neglected doctrine, not to determine its truth, but its nature. What kind of theory was it, what could it claim to accomplish, and what could it not? Some of its proponents regarded it as a naturalistic metaphysics, but this is problematic. This topic is suggestive for the formulation of a naturalism that rejects physicalism yet is compatible with science and realism. (shrink)

A discussion of Quine and Davidson, as interpreted and criticized in Scott Soames’ Philosophical Analysis in the Twentieth Century, Volume II.

Is a philosophical theory needed to ‘underwrite’ attitudes of toleration and respect in a multicultural and religiously diverse world? Many philosophers of religion have thought so, including Victoria Harrison. This article interrogates Harrison’s theory of internalist pluralism, which, though offering a welcome alternative to other theories, such as John Hick’s ‘pluralistic hypothesis’, nevertheless faces problems. Questioning the coherence of the theory’s account of how the existence of objects of worship can avoid being fully conceptual-scheme dependent, and raising doubts about its (...) pretensions to promote interreligious harmony, I also critically discuss the common philosophical tendency to work with under-described and insufficiently analysed examples. What philosophy ought to be able to offer in relation to religious diversity, I propose, is attentiveness to nuances and particularities, thereby aiding religious understanding without the need for a general theory. (shrink)

This essay presents a commentary on and rational reconstruction of Stephen Heath's influential and groundbreaking essay from 1976: “On screen, in frame: Film and ideology.” As a commentary, it attempts to make explicit the implicit assumptions behind Heath's dense and challenging essay; rewrite and clarify his inexact formulations; and develop a microanalysis of the essay's language. As a rational reconstruction, this essay follows Rudolf Botha's philosophical study into the conduct of inquiry to analyze Heath's formulation of conceptual and empirical problems (...) and the strategies he uses to deproblematize them. This rational reconstruction rearranges the parts of Heath's essay according to the four central activities Botha identifies in the formulation of theoretical problems: 1) identifying the problematic state of affairs; 2) describing the problematic state of affairs; 3) constructing problems; and 4) evaluating problems according to well-formedness and significance. The result is a close reading of Heath's essay that reveals in minute detail his reasoning strategies, and highlights how he revolutionized film theory by attempting to integrate Lacanian psychoanalysis and Althusserian Marxism into continental semiotics, under the influence of Kristeva's theories of the signifying practice and the subject-in-process. (shrink)

One phenomenon arising in epistemic life is allegiance to, and break from, a tradition. This phenomenon has three central features. First, individuals who adhere to a tradition seem to respond dogmatically to evidence against their tradition. Second, individuals from different traditions appear to see the same evidence differently. And third, conversion from one tradition to another appears to be different in kind from ordinary belief shift. This paper uses recent work on the nature and rationality of faith to show that (...) these features can all emerge from individuals acting rationally—in particular, from individuals rationally having faith in the core assumptions of their traditions. One upshot is that we don't need to employ the idea of incommensurability to explain these features. (shrink)

Abstract This investigation considers a number of approaches to the definition and analysis of ?culture?. It shows that although approaches to culture span a wide range of viewpoints, there are gems that can be distilled and developed. To that end, a definition of ?culture? is proposed that it is contended captures much of the positive character in what has preceded it and hopefully avoids the negative. This is followed by a discussion of some of the most important studies concerned with (...) the evolution of culture and the notions of culture that constitute the fulcrum of these investigations. Here we find almost as many approaches as there are proponents. However one stands out, of those surveyed here, as being of potentially greatest value to social scientists, the dual inheritance theory of Boyd and Richerson (1985). (shrink)

One establishes oneself within science from the start. One does not reconstitute it from scratch. One does not found it. Alain Badiou, Le Concept de modèle1 [T]here are no crises within science, nor can there be, for science is the pure affirmation of difference. Alain Badiou, "Marque et manque" 2.

My starting point for this paper is a problem in critical thinking pedagogy—the difficult of bringing students to a point where they are able, and motivated, critically to evaluate their own deeply held beliefs. I first interrogate the very idea of a deeply held belief, drawing upon Wittgenstein’s idea of a framework belief—a belief that forms part of a ‘scaffolding’ for our thoughts—or of a belief that functions as a hinge around which other beliefs pivot. I then examine the role (...) of deeply held beliefs, thus conceived, in our ways of being in the world, exploring the extent to which engagement with others whose deeply held beliefs differ from ours may be possible through imaginative ‘travel’. Finally, I reflect upon the extent to which these imaginative moments also offer up opportunities for critical reflection upon our own deeply held beliefs and, thus, the possibility of changing or adapting those beliefs. (shrink)

I aim to show that a semantic minimalist need not also be a semantic internalist. §I introduces minimalism and internalism and argues that there is a prima facie case for a minimalist being an internalist. §II sketches some positive arguments for internalism which, if successful, show that a minimalist must be an internalist. §III goes on to reject these arguments and contends that the prima facie case for uniting minimalism and internalism is also not compelling. §IV returns to an objection (...) from §I and argues for a way to meet it which does not depend on giving up semantic externalism. (shrink)

I argue that some cases of delusions show the inadequacy of those theories of interpretation that rely on a necessary rationality constraint on belief ascription. In particular I challenge the view that irrational beliefs can be ascribed only against a general background of rationality. Subjects affected by delusions seem to be genuine believers and their behaviour can be successfully explained in intentional terms, but they do not meet those criteria that according to Davidson (1985a) need to be met for the (...) background of rationality to be in place. (shrink)

Recent theories of critical thinking have stressed the importance of taking into consideration in critical enquiry the perspectives, or presuppositions, of both the speaker whose statements are under scrutiny and the critic himself. The purpose of the paper is to explore this idea from an epistemological (rather than a pedagogical or psychological) point of view. The problem is first placed within the general context of critical thinking theory. Three types of perspective-dependence are then described, and the consequences of each for (...) the possibility of critical discussion discussed. It is concluded that although it is essential in critical discussion to take the other’s perspective into consideration, perspective-dependence does not exclude the possibility of criticism. (shrink)

This article introduces a dilemma regarding conceptual schemes and suggests a solution. The dilemma is about whether there are conceptual schemes or not. There are good reasons for maintaining either position. There must be conceptual schemes because theory is underdetermined by evidence. And there cannot be conceptual schemes because Davidson has given an almost unassailable argument against it. I resolve the dilemma by arguing that Davidson’s argument is based on a false dilemma generated by too strong a principle of charity. (...) This makes space for conceptual schemes without sacrificing the intelligibility of any. (shrink)

Does cross-cultural philosophy stand in need of a hermeneutical expansion? In engaging with this question, the symposium focuses upon methodological issues salient to cross-cultural inquiry. Douglas L. Berger lays out the ground for the debate by arguing for a methodological approach, which is able to rectify the discipline’s colonial legacies and bridge the hermeneutical distance with its objects of study. From their own perspectives, Hans-Georg Moeller, Paul Roth and A. Raghuramaraju analyze whether such a processual and hermeneutically-sensitive approach can indeed (...) open up new hermeneutic horizons. Their responses shed light upon cross-cultural philosophy’s continued embedment in Euroamerican professional philosophy and how the locality of its knowledge-seeking endeavors may indeed have repercussions on attempts to bridge temporal and spatial distances. (shrink)

I argue that the specter haunting multiculturalism is incommensurability. In many discussions of multiculturalism there is a ‘picture’ that holds us captive — a picture of cultures, religious or ethnic groups that are self-contained and are radically incommensurable with each other. I explore and critique this concept of incommensurability. I trace the idea of incommensurability back to the discussion by Thomas Kuhn — and especially to the ways in which his views were received. Drawing on Gadamer’s understanding of hermeneutics, I (...) argue that the very idea of radical incommensurability is incoherent. This does not entail an abstract universalism but rather sensitivity to the ways in which all languages and cultures are in principle open to the real possibility of enlarging one’s vision and mutually understanding. (shrink)

Psychiatric diagnoses such as Autism Spectrum Disorder (ASD) are primarily attributed on the basis of behavioral criteria. The aim of most of the biomedical research on ASD is to uncover the underlying mechanisms that lead to or even cause pathological behavior. However, in the philosophical and sociological literature, it has been suggested that autism is also to some extent a ‘social construct’ that cannot merely be reduced to its biological explanation. We show that a one-sided adherence to either a biological (...) or a social explanation leads to a moral dilemma, a Catch-22, for autistics and for those living with them. Such explanations close the space for self-identifying as autistic and at the same time being considered to be in good mental health. They foreclose the possibility of making sense of the lived experience of (and with) autistics. In this paper we argue that such lack of space for moral imagination inherently leads to scientific stalemate. We propose that one can only go beyond this stalemate by taking an ethical stance in theorizing, one that enables better intersubjective understanding. Only on such a view can behavior and biology be linked without either disconnecting them or reducing the one to the other. (shrink)

It is common to criticize the idea of objectivity by claiming that we cannot make sense of any cognitive contact with the world that is not constituted by the very materials of our thinking, and to conclude that the idea must be abandoned and that the world is ‘well lost’. We resist this conclusion and argue for a notion of objectivity that places its source within the domain of thoughts by proposing a conception of facts, akin to McDowell’s, as thinkable (...) while independent of any act of thinking. However, we do so without any empiricist commitment. (shrink)

This paper examines Quine’s web of belief metaphor and its role in his various responses to conventionalism. Distinguishing between two versions of conventionalism, one based on the under-determination of theory, the other associated with a linguistic account of necessary truth, I show how Quine plays the two versions of conventionalism against each other. Some of Quine’s reservations about conventionalism are traced back to his 1934 lectures on Carnap. Although these lectures appear to endorse Carnap’s conventionalism, in exposing Carnap’s failure to (...) provide an explanatory account of analytic truth, they in fact anticipate Quine’s later critique of conventionalism. I further argue that Quine eventually deconstructs both his own metaphor and the thesis of under-determination it serves to illustrate. This enables him to hold onto under-determination, but at the cost of depleting it of any real epistemic significance. Lastly, I explore the implications of this deconstruction for Quine’s indeterminacy of translation thesis. (shrink)

Nulty proposes a Davidsonian argument for metaphysical pluralism, the thesis that there are many actual worlds, which appeals to the possibility of alien forms of triangulation. I dispute Nulty’s reading of Davidson on two important points: Davidson’s attack on the notion of a conceptual scheme is not, as Nulty thinks, directed at pluralism, and his understanding of the notions of objective truth and reality is at odds with the conception needed for Nulty’s argument. I also show that the pluralist argument (...) fails on its own terms as it requires an assimilation of worlds to worldviews. But there is much of value in Nulty’s paper despite these important flaws. When the confusions are cleared up, we are left with an intriguing and novel line of argument for conceptual relativism. (shrink)

In this paper we defend the doxastic conception of delusions against the metacognitive account developed by Greg Currie and collaborators. According to the metacognitive model, delusions are imaginings that are misidentified by their subjects as beliefs: the Capgras patient, for instance, does not believe that his wife has been replaced by a robot, instead, he merely imagines that she has, and mistakes this imagining for a belief. We argue that the metacognitive account is untenable, and that the traditional conception of (...) delusions as beliefs should be retained. (shrink)

Attempts to justify the special moral status of human beings over other animals face a well-known objection: the challenge of marginal cases. If we attempt to ground this special status in the unique rationality of humans, then it becomes difficult to see why nonrational humans should be treated any differently than other, nonhuman animals. We respond to this challenge by turning to the social contract tradition. In particular, we identify an important role for the concept of recognition in attempts to (...) secure rights through a social contract. Recognition, which involves identifying with or seeing ourselves as others, is the key to establishing the scope of justice, and we argue that this scope extends to all humans—even the so-called marginal cases—but not to other animals. If this is correct, then we have a principled reason for why all humans have certain rights that other animals lack. (shrink)

The article argues that there is a central problem with the concept of public philosophy, in that philosophy is partly defined by questioning reflection on its own sense, while public or popular culture characteristically relies unreflectively on its ultimate givens, and these are mutually exclusive modes of thought. The article proposes, however, that because of philosophy’s reflection on and potential questioning of its own sense it has a paradoxical structure of foundational and comprehensive conflict with itself and its own procedure, (...) and that this self-divergence allows a genuinely philosophical role for public philosophy. In the public context, acknowledged failure to understand beyond a certain point makes room for a limitation of sense that incompletely but effectively substitutes for the properly philosophical explicit and questioning reflection on the nature of sense as such and on the possibility that even what we do understand about the relevant issues fails to have sense. (shrink)

The article proposes an analogue of conceptual change in the context of comprehensive or deep emotional change and growth, and explores some aspects of its logic in that context. This is not to reduce emotions to concepts, but to say that concepts express the sense that is already inherent in experience and reality. When emotional states change so thoroughly that their applicable concepts become completely different, they shift from one logical structure to another. At the moment or phase when one (...) conceptual structure transforms into another, two logically incompatible descriptions both apply to the same state at the same time. As a result, the correct description of this moment and its development involves conceptual confusion, non sequitur, and logical contradiction. In these contexts, the sense itself of the emotional experience and process is partly characterized by what are otherwise violations of sense. Failure of sense is part of how these experiences make sense. The article explores some of the consequences of this paradox of sense for the nature and experience of deep emotional change and for the meaning of change itself in this context. (shrink)

The paper argues that metaphysical thought, or thought in whose context our general framework of sense is under scrutiny, involves, legitimates, and requires a variety of informal analogues of the ‘true contradictions’ supported in some paraconsistent formal logics. These are what we can call informal ‘legitimate logical inadequacies’. These paradoxical logical structures also occur in deeply pluralist contexts, where more than one, conflicting general framework for sense is relevant. The paper argues further that these legitimate logical inadequacies are real or (...) inherent in sense itself rather than conventional, shows how they can feature in argumentative practice in these metaphysical and pluralist contexts, and discusses some of their implications for metaphysical truth and for philosophical inquiry and disagreement. (shrink)

The paper argues that dreams consist partly in an awareness or experience of the conceptual fabric of our existence. Since what we mean by reality is intimately tied to the concepts given in our experience, dreams are therefore also partly an awareness of the fabric of what we mean by being itself and in general, that is, by objective as well as subjective reality. Further, the paper argues that this characteristic of dreams accounts for several other, more specific aspects of (...) dreams and their possible interpretation, and that it allows us to see how these aspects are related to each other. These more specific aspects are the peculiar types of conceptual or logical relations and transitions that occur within dreams, dreams’ distinctive feeling texture, and some dimensions of the grounds and nature of suitable methods of interpreting dreams. (shrink)

The paper proposes with Davidson that the talk of metaontology is literally meaningless, but with Wittgenstein that it is so in a way that grants a unique type of insight. More specifically, it argues both that Davidson’s arguments have a cogency that is hard to dismiss, and also that, since his own arguments are metaontological, they are self-referential, and consequently in turn undermine their own meaning as well. The paper argues further that metaontological statements cannot be avoided. Consequently, this kind (...) of statement constitutes an unavoidable self-referential paradox that means what it also excludes as capable of meaning. The result is a reinstatement of the meaning of ontological insight and in fact, the paper argues, a deep enrichment and also a particularly cogent justification of it. In addition, the logical peculiarity of the paradox involved has further useful consequences for the outcome of this justification, including a mutually illuminating commonality with some versions of metaethics. (shrink)

In this article I argue that phenomenal intentionality fundamentally consists in a horizonality structure, rather than in a relation to a representational content or the determination of accuracy conditions. I provide a distinctive modal model of intentionality that conceives of phenomenal intentionality as the enjoyment of a plus ultra that points beyond what is actual. The directedness of intentionality on the world, thus, consists in “pointing ahead” to possibilities. The principal difficulty for the modal model is logical: the most obvious (...) way of implementing such a structure results in an analogue of Russell’s paradox. However, this paradox can be avoided by fine-tuning the modal logic deployed in this setting. This way of fine-tuning the logic ultimately amounts to intuitive benefits. For, it captures the intensional character of intentionality, since the way that our mental states refer to things is conception-dependent. Moreover, the way I interpret the modal model leads to a conception of intentionality as a feature of dynamic, diachronic patterns in the way that mental acts subjectively appear, rather than as a synchronic property. We ought to think of intentionality as fundamentally a temporal, subjective determination. In a generalization on Sellars’ approach to concepts, I hold that phenomenally intentional mental presentations involve modal laws and are inconceivable without them. (shrink)

This article focuses on the problems and contradictions of sociological theories of action. It investigates critically the development of the theory of action after the Parsonian synthesis, drawing attention to the limitations of articulating the concept of action systematically within a presuppositional framework of analytical theory. Having exposed Parsons general theory of action and some interpretations and criticisms, the paper addresses the so-called “return of grand theory”, spearheaded in the early 1980s by authors such as Alexander, Habermas, Giddens and Luhmann. (...) The article analyses the conceptual innovations introduced by their theories according to Parsons own definition of theoretical work, which – as he said – consists in reconstruction and transformation of categories in the moments of their failure. While it is argued that sociological theory cannot do away with general concepts, it is also argued that these need not have the form of a synthetic theory of action of the kind outlined by Parsons and the Post-Parsonians. (shrink)

What is it about relativism that justifies, or at least explains, its continued appeal in the face of relentless attacks through the history of philosophy? This paper explores a new answer to this old question, casting the response in metaphilosophical terms. § i introduces the problem. § ii argues that one part of the answer is that some of the well-known defences of relativism take it to be a philosophical stance—that is, a broad perspective or orientation with normative consequences—rather than (...) a doctrine or a thesis. § iii draws attention to an assumption, not always explicitly stated by its proponents, that the relativist stance leads to the cultivation of some key intellectual virtues. Open-mindedness, tolerance, intellectual humility, and curiosity are examples of the intellectual virtues that relativism can foster. § iv argues that the defence of relativism on the basis of the virtues that are assumed to follow from it, at best, is only partially successful. Moreover, there is a range of epistemic vices, resulting from the stance, that undercuts the virtue-based defence presented in § iii. (shrink)

Recent philosophical analyses of the epistemic dimension of images in the sciences show a certain trend in acknowledging potential roles of these images beyond their merely decorative or pedagogical functions. We argue, however, that this new debate has yet paid little attention to a special type of pictures, we call ‘visual metaphor’, and its versatile heuristic potential in organizing data, supporting communication, and guiding research, modeling, and theory formation. Based on a case study of Conrad Hal Waddington’s epigenetic landscape images (...) in biology, we develop a descriptive framework applicable to heuristic roles of various visual metaphors in the sciences. (shrink)

Recent philosophical analyses of the epistemic dimension of images in the sciences show a certain trend in acknowledging potential roles of these images beyond their merely decorative or pedagogical functions. We argue, however, that this new debate has yet paid little attention to a special type of pictures, we call ‘visual metaphor’, and its versatile heuristic potential in organizing data, supporting communication, and guiding research, modeling, and theory formation. Based on a case study of Conrad Hal Waddington’s epigenetic landscape images (...) in biology, we develop a descriptive framework applicable to heuristic roles of various visual metaphors in the sciences. (shrink)

Beginning with a reflection on ‘conceptual schemes’ and ‘very’ ideas and proceeding to examine different approaches to thinking philosophy of science not only with Kant but also between traditional analytic and hermeneutico-phenomenological approaches, this essay features a review of Kant’s 1755 solar nebular hypothesis and a reading of Nietzsche and Kant on cosmology along with a reflection on chemistry and the properties of cinnabar. Overall it is argued that a philosophy of science must be critical rather than normative/prescriptive. Seeking to (...) raise the question of science along with the question of truth, the essay also raises the question of esoteric historiography in science, including alchemy. (shrink)

En este breve comentario discuto algunos aspectos de la interpretación de la epistemología de Davidson que sugiere Willian Duica en su reciente libro. Luego de una presentación somera del libro me centro en tres asuntos centrales de la interpretación de Duica. En primer lugar, argumento que su lectura de la crítica de Davidson al dualismo esquema/contenido es muy restrictiva y deja abierta la posibilidad de un realismo directo empirista. En segundo lugar, argumento que en su lectura el propio Duica se (...) compromete inadvertidamente con un empirismo de este tipo y, de este modo, su interpretación entra en tensión con el coherentismo de Davidson. Finalmente, discuto algunos aspectos de la interpretación que hace Duica de la tesis davidsoniana de la triangulación. (shrink)