Jonathan Knowles

Theory of Science provides an accessible but systematic survey of perspectives on science and rationality through the arguments and ideas of leading thinkers of the 20th century, including Einstein, Carnap, Popper, Kuhn, Feyerabend, Hempel, Gadamer, Foucault, and Harding. The book also gives a critical introduction to scientific methodology, including the relationship between theory and observation, the problem of induction, hypothetic-deductive method, truth and progress, and explanation in natural and human science. The book covers the theory of science â?? part of the syllabus in Examen Philosophicum at The Norwegian University of Science and Technology (NTNU) â?? for which there has hitherto been no unitary text book in English. Theory of Science is also suited to use in other courses at various levels, as well as being of interest to a wider audience concerned with the philosophical and social problems of science.

"A critical investigation of modern naturalism is vitally needed for a deeper understanding of pragmatism's ability to offer enriching perspectives on contemporary philosophy of science. The kind of non-reductive naturalism so often associated with pragmatism needs to be assessed for its plausibility, as does whether a pragmatist perspective on different human ways of conceiving of the world can mediate between different points of view, especially those of natural science and common sense"-- Publisher summary.

In recent work Huw Price has defended what he calls a global expressivist approach to understanding language and its relation to the physical world. Global expressivism rejects a representationalist picture of the language-world relation and thereby, by intention at least, also a certain metaphysical conception of what are commonly known as placement problems: how entities of the everyday, common sense world like mental states, meanings, moral values, modalities and so on fit into the natural world. Global expressivism upholds a commitment to substantive enquiry into the naturalistic basis of thought about the world, but pursues this in a pragmatist or non-representationalist ’key’, thereby rendering—as it sees things—traditional metaphysical questions otiose. I am in broad sympathy with many of Price’s arguments and ideas. However, I believe the specific sub-variety of non-representationalism he develops actually fails to secure the anti-metaphysical results he seeks. My arguments have their starting point in the Carnap-Quine debate. Given Price’s view of this, which I endorse, I think it can be made clear that Quine’s view, or something very close to it, presents us with a coherent example of a non-representationalist metaphysical placement project. Though one might reasonably doubt the rationality of or motivation for such a view, Price’s own strongly naturalistic assumptions, as these are evinced in his so-called ’subject’ naturalism, make that move dialectically unavailable to him. I end with a brief sketch of an alternative non-representationalist and anti-metaphysical position.

I seek to show that we do not need norms in a genuinely naturalistic epistemology. The argumentation is launched against a common conception of such norms as derived through a process of wide reflective equilibrium, where one aims to bring general normative statements into accord with concrete, possibly expert, intuitions about particular cases, taking simultaneously into account relevant scientific findings -- including facts about human psychological abilities -- and philosophical theories. According to this line, it is possible thus to arrive at genuine, general normative statements concerning how we should reason. I maintain that such statements are superfluous or illegitimate for several interlocking reasons. The central arguments are i) that certain norms simply repeat the content of descriptive statements which in any case would have to be taken account of in scientific reasoning; ii) if norms are merely meant to systematize an intuitive capacity for reasoning and forming beliefs, we can make do with honing that capacity; iii) there is no reason to regard principles in a psychological reasoning module as norms rather than simply prescursors of behaviour; iv) we cannot make sense of experts in relation to epistemic rationality; v) making play with the idea of purely philosophical constraints on theories of norms involves reneging on naturalism.

I focus on Fodor’s model of the relationship between special sciences and basic physics, and on a criticism of this model, that it implies that the causal stability of, e.g., the mental in its production of behaviour is nothing short of a miraculous coincidence. David Papineau and Graham Macdonaldendorse this criticism. But it is far less clear than they assume that Fodor’s picture indeed involves coincidences, which in any case their injection of a teleological supplement cannot explain. Papineau’s and Macdonald’s problem is subtly different from a similar one presented by Adrian Cussins. This is no more effective against Fodor’s picture, but the kind of account of the relation between the physical and the psychological which could constitute a solution to Cussins’ problem is one which, for independent reasons, a physicalist of Fodor’s stripe ought to provide.

In this paper, I seek to refute arguments for the idea that folk psychological explanation, i.e., the explanation of actions, beliefs and desires in terms of one another, should be understood as being of a different character than ordinary scientific explanations, a view defended most prominently in analytical philosophy by Donald Davidson and John McDowell. My strategy involves arguing both against the extant arguments for the idea that FP must be construed as giving such explanations, and also against the very notion of such a different kind of explanation. I argue first that the in some sense a priori and conceptual nature of folk psychological principles does not support the idea that these are other than empirical generalisations, by appeal to recent nativist ideas in cognitive science and to Lewis's conception of the meaning of theoretical terms. Second, I argue that there is no coherent sense in which folk psychological explanations can be seen as normative. Thirdly, I examine the putatively holistic character of the mental and conclude that that too fails to provide any cogent reasons for viewing folk psychological explanations as different from other kinds of explanation.

The article presents a critical discussion of Larry Laudan's naturalistic metamethodological theory known as normative naturalism (NN). I examine the strongest extant objection to NN, and, with reference to ideas in Freedman ( Philosophy of Science , 66 (Proceedings), pp. S526-S537, 1999), show how NN survives it. I then go on to outline two problems that really do compromise NN. The first revolves around Laudan's conception of the relationship between scientific values and the history of science. Laudan argues we can make sense of progress in science without seeing great scientists in the past as having held the cognitive values and methodological rules we hold today as important for science. I argue this is extremely implausible, and moreover that Laudan must see our values today as justified by reference to the values of past scientists if he is to avoid a pernicious form of relativism. The second problem with NN is that its conception of methodological rules--as hypothetical imperatives linking cognitive means to ends--is untenable. Such rules would not be needed in a scientific community; moreover it is doubtful whether they should class as rules at all. I conclude by suggesting that the distinction between cognitive means and ends which undergirds Laudan's view is intuitively not well founded, and in any case does not provide sufficient materials for a viable normative naturalized epistemology.