"To explain philosophy is not to explain the content of the philosopher's opinions at any given moment. Instead, to explain a philosophy means to approach the central insight that guides it through its entire lifespan, through all surface changes of opinion and all troubled reversals of viewpoint."
- Graham Harman, Heidegger Explained
- W.V. Quine
Broadly speaking the Analytical tradition in philosophy can be characterized by an emphasis on clarity and formal logic and analysis of language, and a profound dependence and respect for the natural sciences. Some of the main precursors of this movement in philosophy are Bertrand Russell, Ludwig Wittegenstein, G.E. Moore, Gottlob Frege, and the logical positivists who derive from them.
W.V. Quine was one of the first to propound an influential naturalized epistemology. He ultimately wanted to replace traditional epistemology with the natural sciences (i.e., psychology ). He felt that the psychological study of how people produce theoretical “output” from sensory “input,” and the other is the logical reconstruction of our theoretical vocabulary in sensory terms. In Quine’s view, the second approach cannot succeed, and so we are left with psychology. The basis of this view is a theory of knowledge that limits its scope and methods to those of the natural sciences and their conclusions. Within this domain there is three main forms of naturalized epistemic theories: replacement, cooperative, and substantive naturalisms. Replacement would have us abandon traditional forms of epistemology in favor of naturalist science and its methods. Cooperative epistemic forms tells us that traditional epistemology would benefit from the cognitive sciences. Substantive epistemic centers on the factual assertions of 'facts of knowledge' and 'natural facts'.
Alvine Goldman on the other hand provided what he termed causal reliabilism. This is a theory of knowledge that states that a justified true belief counts as knowledge only if it is caused in a suitably reliable way. What Goldman tells us is that it is necessary also to construct a theory of what epistemic justification really is, as opposed to how common sense takes it to be. That theory will be grounded in our psychological understanding of how beliefs are formed, and it will include assessments of those processes in terms of reliability.
Thomas Kuhn applied a naturalistic approach to the social sciences using epistemological questions. Kuhn inspired naturalism is not incompatible with the naturalism that draws on psychology and the natural sciences. Such naturalistic epistemologists as Alvin Goldman and Philip Kitcher have fruitfully applied insights from both the natural and the social sciences in the attempt to understand knowledge as a simultaneously cognitive and social phenomenon.
Naturalistic epistemologists seek an understanding of knowledge that is scientifically informed and integrated with the rest of our understanding of the world. Their methods and commitments differ, because they have varying views about the precise relationship between science and epistemology and even about which sciences are most important to understanding knowledge.
Epistemic naturalists usually try two sorts of approaches: 1) either they try to show the issue is empirical and then to apply scientific data, results, methods, and theories to it directly; or, 2), they try to undermine a problem’s motivation by showing it arises only on certain false, non-naturalistic assumptions.
Yet, despite its efforts, naturalistic epistemology does face serious challenges from the problems of circularity and normativity. They are seeking nothing more nor less than the unification of science and philosophy.