Philosophy of Science: Interfaces between Logic and Knowledge Representation

Abstract

In this inaugural lecture I offer, against the background of a discussion of knowledge representation and its tools, an overview of my research in the philosophy of science. I defend a relational model-theoretic realism as being the appropriate meta-stance most congruent with the model-theoretic view of science as a form of human engagement with the world. Making use of logics with preferential semantics within a model-theoretic paradigm, I give an account of science as process and product. I demonstrate the power of the full-blown employment of this paradigm in the philosophy of science by discussing the main applications of model-theoretic realism to traditional problems in the philosophy of science.

I discuss my views of the nature of logic and of its role in the philosophy of science today. I also specifically offer a brief discussion on the future of cognitive philosophy in South Africa. My conclusion is a general look at the nature of philosophical inquiry and its significance for philosophers today.     

Wittgenstein,Ethics and Basic Moral Certainty

Alice Crary claims that “the standard view of the bearing of Wittgenstein's philosophy on ethics” is dominated by “inviolability interpretations”, which often underlie conservative readings of Wittgenstein. Crary says that such interpretations are “especially marked in connection with On Certainty”, where Wittgenstein is represented as holding that “our linguistic practices are immune to rational criticism, or inviolable”. Crary's own conception of the bearing of Wittgenstein's philosophy on ethics, which I call the “intrinsically‐ethical reading”, derives from the influential New Wittgenstein school of exegesis, and is also espoused by James Edwards, Cora Diamond, and Stephen Mulhall. To my eyes, intrinsically‐ethical readings present a peculiar picture of ethics, which I endeavour to expose in Part I of the paper. In Part II I present a reading of On Certainty that Crary would call an “inviolability interpretation”, defend it against New Wittgensteinian critiques, and show that this kind of reading has nothing to do with ethical or political conservatism. I go on to show how Wittgenstein's observations on the manner in which we can neither question nor affirm certain states of affairs that are fundamental to our epistemic practices can be fruitfully extended to ethics. Doing so sheds light on the phenomenon that I call “basic moral certainty”, which constitutes the foundation of our ethical practices, and the scaffolding or framework of moral perception, inquiry, and judgement. The nature and significance of basic moral certainty will be illustrated through consideration of the strangeness of philosophers' attempts at explaining the wrongness of killing.     

What is nature? – ziran in early Daoist thinking

The question of the relation between humans and nature lies at the foundation of any philosophy. With the daily worsening environmental crisis, we are forced to face this ancient question again. Yet when we put it into the form of ‘humans and nature’, a metaphysics is already implied and the problem of nature has not yet been questioned. At this moment, the very question that needs to be put forward is, ‘What is nature’? The question of nature will be interrogated through a comparative view in this essay. First, I argue the modern understanding of nature lies at the root of today’s environmental problems. Then, I go back to early Daoism to explore Daoist thinking on ziran (usually translated as ‘nature’). The meaning of ‘dao emulates ziran’ is brought to light through a detailed interpretation of the ziran of dao and things. Ziran penetrates the dao, the heavenly, the earthly and the human. It is with the understanding of ziran that the nature of humans and all things are illuminated. Heidegger’s thinking on nature in connection with Daoism is briefly examined together with some other significant environmental philosophies.     

Max Webers Wertfreiheitspostulat und die naturalistische Begründung von Normen

Max Weber's postulate of value-neutrality and the naturalistic justification of norms. The relationship between facts and values is an essential problem in philosophy, political science and sociology. Usually it is held that there is a wide gap between what is and what ought to be, the nature of which, however, is far from clear. My purpose is to elucidate this relationship by analyzing some well-known articles of Max Weber. I first present Weber's postulate of ‘value-neutrality’ and outline the reasons he gave for it. Then I proceed by examining Weber's scientific methodology, arguing that its presuppositions contradict the existence of a hiatus irrationalis between facts and values. This conclusion is supported by some historical examples which show that facts are constituted by values and values by facts. I propose that Weber's epistemological justification of value-neutrality be discarded in favor of a pragmatic one that can also be derived from his arguments. I conclude by sketching the outline of a naturalistic approach in philosophy and related disciplines. This approach admits the continuity of facts and values and provides a realistic view of every-day normative disputes. This revised version was published online in August 2006 with corrections to the Cover Date.     

Frege’s <Emphasis Type="Italic">Begriffsschrift</Emphasis> as a <Emphasis Type="Italic">lingua characteristica</Emphasis>

In this paper I suggest an answer to the question of what Frege means when he says that his logical system, the Begriffsschrift, is like the language Leibniz sketched, a lingua characteristica, and not merely a logical calculus. According to the nineteenth century studies, Leibniz’s lingua characteristica was supposed to be a language with which the truths of science and the constitution of its concepts could be accurately expressed. I argue that this is exactly what the Begriffsschrift is: it is a language, since, unlike calculi, its sentential expressions express truths, and it is a characteristic language, since the meaning of its complex expressions depend only on the meanings of their constituents and on the way they are put together. In fact it is in itself already a science composed in accordance with the Classical Model of Science. What makes the Begriffsschrift so special is that Frege is able to accomplish these goals with using only grammatical or syncategorematic terms and so has a medium with which he can try to show analyticity of the theorems of arithmetic.     

Rethinking the metaphysical questions of mind,matter, freedom,determinism, purpose and the mind-body problem within the panpsychist framework of consolationism

Consolationism is an emergent intellectual current in 21st century African philosophy that presents itself as an alternative constructive framework for metaphysics, with an epistemic foundation in the African thought-world and being universally applicable. In this paper, I trace the influences of consolationism within African philosophy, and argue that this original philosophical system is the product of the African complementary perspective of the universe understood as an interconnected whole of diverse entities. I submit that the doctrine of mood which lies at the heart of the consolationist system introduces new concepts into African metaphysics and recasts the question of being. I show how the consolationist perspective sheds light on the persistent mind-body problem and establishes consciousness as a necessary feature of the universe. Deploying the method of exposition and analysis, I assert that the panpsychist framework of consolationism facilitates a novel way of conceptualising such metaphysical questions as mind, matter, the mind-body problem, purpose, freedom, and determinism.     

Behaviorism Makes Its Debut: A Review of Lattal and Chase's Behavior Theory and Philosophy

Behavior Theory and Philosophy, masterfully edited by Lattal and Chase, is a collection of 21 papers by major behaviorists, presented and discussed at a conference on the intersection of philosophy and behavior analysis held at West Virginia University in 2000. The chapters in Part I are devoted to philosophy of science (causality, constructs, theory, explanation, reductionism) and the relations among behavior analysis and several contemporary philosophical movements (humanism, empiricism, pragmatism, selectionism, analytic philosophy). Part II examines behavior‐analytic interpretations of mentalistic concepts (intention, imagination, ethics, cognition). Part III presents extensions and applications of basic research in behavior analysis (verbal behavior, creativity, development, education, disability, and corporate culture). The publication of this book signals that behaviorism has developed mature philosophical foundations.     

Economics in Philosophy of Science: A Dismal Contribution?

This paper draws a connection between recentdevelopments in naturalized philosophyof science and the Buchanan research programin economics. Economic approaches innaturalized philosophy of science canbe combined to form an economic philosophy ofscience. After giving an overview of someof these approaches, I lay out the fundamentalsof the Buchanan research program. I arguethat its main elements are a theory of interactionsand a normative foundation in consensus whichhelp to answer some important criticismsof economic philosophy of science.     

(Re)encountering Individuality: Schlegel's Romantic Imperative as a Response to Nihilism

According to Friedrich Schlegel: “The Romantic imperative demands [that] all nature and science should become art [and] art should become nature and science”; “[P]oetry and philosophy should be made unified”, and “life and society [should be made] poetic”. The aim of this paper is to explain why Schlegel believes that this is an imperative that constrains philosophy and ordinary life. I argue that the answer to this question requires that we regard the Romantic imperative as a response to the skeptical worry that was introduced by Friedrich Heinrich Jacobi as nihilism. The aspect of nihilism that I discuss concerns the worry that we are incapable of experiencing individuals qua individuals. According to Schlegel, this skeptical threat requires a reorientation in thought and philosophical method, one that must be modeled on the aesthetic orientation towards the world. More precisely, the experience of individuals qua individuals, which is called into question by the nihilist, depends on the special normative structure of the creative and critical attitude towards art and beauty that Schlegel called Romantic Poesie. Kant failed to address nihilism because he failed to recognize that the normative structure that he himself ascribed to the judgment of taste is required also for experiencing individuals as individuals, and for being properly responsive to persons.     

Fuzziness in the Mind: Can Perception be Unconscious?

Recently, a new movement has arisen in the philosophy of perception: one that views perception as a natural kind. Strangely, this movement has neglected the extensive work in philosophy of science on natural kinds. The present paper remedies this. I start by isolating a widespread and influential assumption, which is that we can give necessary and sufficient conditions for perception. I show that this assumption is radically at odds with current philosophy of science work on natural kinds. I then develop an alternative, new view of perception. This new view takes as its starting point the dominant position on kinds in the life sciences: the homeostatic property cluster account. I show that, if you accept this view, then all of the putative cases of unconscious perception are more plausibly seen as cases where it is indeterminate whether the mental episode in question is an instance of perception.     

Relationality and Existence: Hermeneutic and Deconstructive Approaches Emerging From Heidegger's Philosophy

In this article I discuss the concept of relationality from a philosophical perspective. I focus, in particular, on the philosophy of Martin Heidegger, exploring how his relational concepts of worldhood, being-with, solicitude, and Befindlichkeit were central to his early philosophy, before he extended his ideas and related them to psychotherapy in his later work. I then proceed to focus on the work of other philosophers, influenced by Heidegger, who developed and extended his relational ideas further. In particular, I discuss Hans Georg Gadamer's notions of Horizon and Dialogue, Paul Ricouer's notion of Dialectics with Otherness, and the writings of Emmanuel Levinas and Jacques Derrida concerning Otherness, Difference, and Ethics. I develop this philosophical discussion as a foundation for further consideration of the relevance of relational ideas in philosophy to the domains of developmental psychopathology and clinical approaches in the field of psychotherapy.     

Whose social values? Evaluating Canada’s ‘death of evidence’ controversy

With twentieth- and twenty-first-century philosophy of science’s unfolding acceptance of the nature of scientific inquiry being value-laden, the persistent worry has been that there are no means for legitimate negotiation of the social or non-epistemic values that enter into science. The rejection of the value-free ideal in science has thereby been coupled with the spectres of indiscriminate relativism and bias in scientific inquiry. I challenge this view in the context of recently expressed concerns regarding Canada's death of evidence controversy. The worry, raised by Stathis Psillos, is that as constructivist accounts of science demoted the previously secure status of evidence for drawing justified conclusions in science, we were left with no rational delineation between the right and wrong values for science. The implication for the death of evidence controversy is that we may have no rational grounds for claiming that the Canadian Government is wrong to interfere with scientific enterprise. But he does offer another avenue for reaching the conclusion that the wrong social values are directing the current stifling of some sectors of Canadian science. Psillos draws from standpoint epistemologies to devise a salient defence of ‘valuing evidence’ as a universalizable social value. That is, government bodies ought to enable scientific research via adequate funding as well as political non-interference. In this paper, I counter that (i) non-epistemic values can be rationally evaluated and that (ii) standpoint epistemology’s universalizable standpoint provides an inadequate framework for negotiating social values in science. Regarding (i), I draw from the evidence-based medicine debate in philosophy of medicine and from feminist empiricist investigations into the science–values relationship in order to make the argument for empirically driven value arbitration. If social values can be rationally chosen in the context of justification, then we can have grounds for charging the Canadian leadership with being ‘at war with science’. (ii) I further argue that my recommended empiricist methodology is preferable to Psillos’s search for universalizable perspectives for negotiating social values in science because the latter method permits little more than the trivial conclusion that evidence is valuable to science.     

Quine on the Nature of Naturalism

Quine's metaphilosophical naturalism is often dismissed as overly “scientistic.” Many contemporary naturalists reject Quine's idea that epistemology should become a “chapter of psychology” (1969a, 83) and urge for a more “liberal,” “pluralistic,” and/or “open‐minded” naturalism instead. Still, whenever Quine explicitly reflects on the nature of his naturalism, he always insists that his position is modest and that he does not “think of philosophy as part of natural science” (1993, 10). Analyzing this tension, Susan Haack has argued that Quine's naturalism contains a “deep‐seated and significant ambivalence” (1993a, 353). In this paper, I argue that a more charitable interpretation is possible—a reading that does justice to Quine's own pronouncements on the issue. I reconstruct Quine's position and argue (i) that Haack and Quine, in their exchanges, have been talking past each other and (ii) that once this mutual misunderstanding is cleared up, Quine's naturalism turns out to be more modest, and hence less scientistic, than many contemporary naturalists have presupposed. I show that Quine's naturalism is first and foremost a rejection of the transcendental. It is only after adopting a broadly science‐immanent perspective that Quine, in regimenting our language, starts making choices that many contemporary philosophers have argued to be unduly restrictive.     

The Educational Thing

In this essay, I argue that education should be conceived of as a thing in itself. To lift this view, I present aspects of Graham Harman’s philosophy, a speculative realism that can be seen as a radical break with social constructivism and similar approaches. Next, I attempt to outline a rough sketch of an educational “thing”, drawing on concepts such as protection, love, swarm, tension and shadow. Finally, I briefly discuss some implications of this vision for philosophy of education. In particular, I think that my discussion point to philosophy of education as the basic discipline in an educational science.     

When Does Truth Matter? Spinoza on the Relation between Theology and Philosophy

One of the aims of Spinoza's Tractatus Theologico‐Politicus is to vindicate the view that philosophy and theology are separate forms of enquiry, neither of which has any authority over the other. However, many commentators have objected that this aspect of his project fails. Despite his protestations to the contrary, Spinoza implicitly gives epistemological precedence to philosophy. I argue that this objection misunderstands the nature of Spinoza's position and wrongly charges him with inconsistency. To show how he can coherently allow both that theology and philosophy employ independent epistemological standards, and that philosophy is epistemologically superior to theology, we need to step back from the immediate disputes to which the Tractatus is a response and examine a Ciceronian distinction on which Spinoza indirectly draws. As well as enabling us to vindicate Spinoza's position, it places his alleged naturalism in a new light and portrays philosophizing as a form of piety.     

Hume's Experimental Method

In this article I attempt to reconstruct David Hume's use of the label ‘experimental’ to characterise his method in the Treatise. Although its meaning may strike the present-day reader as unusual, such a reconstruction is possible from the background of eighteenth-century practices and concepts of natural inquiry. As I argue, Hume's inquiries into human nature are experimental not primarily because of the way the empirical data he uses are produced, but because of the way those data are theoretically processed. He seems to follow a method of analysis and synthesis quite similar to the one advertised in Newton's Opticks, which profoundly influenced eighteenth-century natural and moral philosophy. This method brings him much closer to the methods of qualitative, chemical investigations than to mechanical approaches to both nature and human nature.     

Normative Naturalism and the Relativised <Emphasis Type="Italic">A Priori</Emphasis>

Summary  In this paper I address some shortcomings in Larry Laudan’s normative naturalism. I make it clear that Laudan’s rejection of the “meta-methodology thesis”, or MMT is unnecessary, and that a reformulated version MMT can be sustained. I contend that a major difficulty that attends Laudan’s account is his contention that a naturalistic philosophy of science cannot accommodate any a priori justification of methodological rules, and consider what sort of naturalism might best replace Laudan’s. To do this, I discuss Michael Friedman’s account of a relativised a priori and show that it is consistent with naturalistic philosophy of science and that it can help form the basis of a plausible normative naturalism. In particular, this discussion shows that Laudan’s rejection of any a priori justification of methodological rules is unjustified and inconsistent with scientific practice. Finally, I point the way to a version of normative naturalism that includes MMT and accounts for the role of constitutive a priori principles within science.     

The Legacy of Neoplatonism in F. W. J. Schelling's Thought

F.W.J. Schelling, one of the essential thinkers in the development of German Idealism, formed his own thought not only in a critical dialogue with Kant's and Fichte's transcendentalism and Hegel's earlier conception of thinking, but also in an intensive discussion with Plato and Aristotle. Over and above that, Neoplatonism – especially Plotinus, Proclus and the Christian Dionysius the Areopagite – played a decisive role in Schelling's reception and transformation of ancient philosophy. Selecting the manifold aspects which could be reflected on in this field, I want to make plausible as a transcendental analogy to Plotinus' concept of self-knowledge Schelling's requirement for a raising-up and transformation of the finite 'I' into the form of the Absolute, whose central features converge with the goal of the Plotinian self – transformation of thought into a timeless self-thinking and its ground. A main part of this paper discusses Schelling's and Plotinus' concept of nature as a dynamic process constituted by an immanent 'creating theoria'. Furthermore we find in Schelling's theory of the Absolute as the 'utterly One' a union of Plotinus' notion of a pure One beyond Being with that of the reflexive self-presence of nous, so that this Absolute can be understood as an All-Unity which grounds and embraces all actuality – because it is in itself the most unifying self-affirmation or self-mediation. What follows is a reflection on the anagogical function of art, especially from the viewpoint of Plotinus' non-Platonic rehabilitation of art as an imitation of nature. The last perspectives focus on Schelling's concept of matter and emanation – as different from and at the same time coherent with that of Plotinus – and on Schelling's theory of an absolute self – willing will in connection with Plotinus' Enneads VI.8, 'On free will and the will of the One' as a causa sui.