Hilary Putnam has offered two arguments to show that we cannotbe brains in a vat, and one to show that our cognitive situationcannot be fully analogous to that of brains in a vat. The latterand one of the former are irreparably flawed by misapplicationsof, or mistaken inferences from, his semantic externalism; thethird yields only a simple logical truth. The metaphysical realismthat is Putnams ultimate target is perfectly consistent withsemantic externalism.

Ernie Lepore: Quine, Analyticity, and Transcendence: In “Two Dogmas of Empiricism” Quine characterizes and rejects three approaches to making sense of analyticity. One approach attempts to reduce putative analytic statements to logical truths by synonym substitution. A second approach is to identify analytic statements with “semantic rules,” or “meaning postulates.” A third approach relies on the verificationist theory of meaning. According to that theory, “every meaningful statement is held to be translatable into a statement (true or false) about immediate experience, (...) or, less radically, “each statement, taken in isolation from its fellows, can admit of confirmation or information.” Analytic statements are, then, those that are confirmed come what experiences may. If either version of the verificationist approach were correct, then there would be objective facts about the extensions of terms from intuitive semantics, for example, “‘…’ is synonymous with ‘___’” and “‘…’ is analytic,” across all languages. In this essay, I focus my discussion primarily on the third, verificationist, approach – though what I shall have to say will bear on the second approach as well. In particular, I explain the models of language contained in verificationism and the weaker confirmationism, and why most positivists abandoned the former for the latter. I explain the connection between confirmationism and intuitive semantics and why considerations of holism alone are incapable of severing that connection. (shrink)

Radical skepticism, the view that no human being has any contingent knowledge of any external world there may be, has few adherents these days. But many who reject it concede that such skeptical arguments as SA require some sort of response, since they are obviously valid and their premises are, at the very least, highly plausible.

Early in Outlines of Pyrrhonism Sextus Empiricus writes.

Early in Outlines of Pyrrhonism Sextus Empiricus writes.

Central elements of W. V. Quine’s epistemology are widely and deeply misunderstood, including the following. He held from first to last that our evidence consists of the stimulations of our sense organs, and of our observations, and of our sensory experiences; meeting the interpretive challenge this poses is a sine qua non of understanding his epistemology. He counted both “This is blue” and “This looks blue” as observation sentences. He took introspective reports to have a high degree of certainty. He (...) endorsed outright Hume’s “skeptical” argument concerning induction. His naturalized epistemology is simply naturalistic, or scientific, epistemology stripped of the project of rational reconstruction, and is thoroughly normative. Quine was unconditionally a scientific philosopher who took our theories to be answerable ultimately to our perceptual experiences (sensations)—and conditionally an empiricist, empiricism being a scientific theory that has no competitors worthy of the name. I attempt to make all of this clear, and conclude by offering a concise formulation of his epistemology. (shrink)

Hilary Putnam has offered two arguments to show that we cannotbe brains in a vat, and one to show that our cognitive situationcannot be fully analogous to that of brains in a vat. The latterand one of the former are irreparably flawed by misapplicationsof, or mistaken inferences from, his semantic externalism; thethird yields only a simple logical truth. The metaphysical realismthat is Putnam’s ultimate target is perfectly consistent withsemantic externalism.

Christopher Peacocke has recently made an important and insightful effort to fashion a non-verificationist method for distinguishing sense from nonsense. The argument is subtle and complex, and varies somewhat with each of his three target ‘spurious hypotheses’: that if a perfect fission of one person into two were to occur, one and only one of the resulting persons would be identical with the original; that another person’s visual experience can be qualitatively different from your own when you are both seeing (...) the same object, even though your relevant brain states are physically identical and so are your environmental conditions; and that the entire material universe is moving undetectably at a particular uniform velocity with respect to absolute space. My own assessment of his efforts is that they are most successful against the third of these hypotheses, and that this is a function of the fact that of the three, it alone clearly employs a problematic concept- that of absolute location. However, my purpose here is not to engage in a comprehensive evaluation of Peacocke’s project; it is rather to defend the extreme inverted spectrum hypothesis against his attack. I shall argue not only that his argument against EISH fails, but that he is himself independently committed to its intelligibility. Beyond that, I shall point out some striking and, to my mind, welcome consequences of his plausible claims concerning the relations between his own proposal and certain other views concerning content theory; the consequences in question depend both on his positive proposal and on my reasons for rejecting his argument against the extreme inversion hypothesis. (shrink)

Christopher Peacocke has recently made an important and insightful effort to fashion a non-verificationist method for distinguishing sense from nonsense. The argument is subtle and complex, and varies somewhat with each of his three target ‘spurious hypotheses’: that if a perfect fission of one person into two were to occur, one and only one of the resulting persons would be identical with the original; that another person’s visual experience can be qualitatively different from your own when you are both seeing (...) the same object, even though your relevant brain states are physically identical and so are your environmental conditions; and that the entire material universe is moving undetectably at a particular uniform velocity with respect to absolute space. My own assessment of his efforts is that they are most successful against the third of these hypotheses, and that this is a function of the fact that of the three, it alone clearly employs a problematic concept- that of absolute location. However, my purpose here is not to engage in a comprehensive evaluation of Peacocke’s project; it is rather to defend the extreme inverted spectrum hypothesis against his attack. I shall argue not only that his argument against EISH fails, but that he is himself independently committed to its intelligibility. Beyond that, I shall point out some striking and, to my mind, welcome consequences of his plausible claims concerning the relations between his own proposal and certain other views concerning content theory; the consequences in question depend both on his positive proposal and on my reasons for rejecting his argument against the extreme inversion hypothesis. (shrink)

In several recent writings and in the 1980 Freemantle Lectures at Oxford, Alvin Plantinga has defended the idea that belief in God is ‘properly basic,’ by which he means that it is perfectly rational to hold such a belief without basing it on any other beliefs. The defense falls naturally into two broad parts: a positive argument for the rationality of such beliefs, and a rebuttal of the charge that if such a positive argument ‘succeeds,’ then a parallel argument will (...) ‘succeed’ equally well in showing that belief in the Great Pumpkin is properly basic. In this essay I shall argue both that Plantinga has partially misconceived the objection, and that he has not succeeded, indeed cannot succeed, in rebutting it, for the objection does in fact constitute a reductio ad absurdum of his position. For the sake of ease of exposition, I shall first provide a bare sketch of the positive argument, though I shall discuss it directly only as it bears on the attempted reductio. (shrink)

Robert F. Almeder believes he has discovered a ‘pressing problem': ‘stating the conditions under which we determine whether a person's basic belief is true without introducing an evidence condition for knowledge’. He believes further that this is ‘a problem needing resolution before any ultimately satisfying explication of basic knowledge can be offered’.My aim is to show that Almeder has failed to discover any problem at all, but I begin by asking: how could the question how we determine the truth of (...) another's basic belief have any bearing on the correct explication of the concept of basic knowledge? (shrink)

In ‘Skeptism Oisarmed,’ L.S. Carrier asserts the following:… any reasonable person would accept premise only on the ground that both p and q are propositions for which we can get the requisite evidence.Premise, actually a premise schema attributed to Peter Unger, is the following:If A both knows p and knows that p entails q, then A can come to know that q.I suggest, contrary to Carrier's assertion, that many reasonable people, including many philosophers, would regard as a necessary truth knowable (...) a priori, and would be quite happy to accept its universal quantification, with no implied restriction to propositions for which we can get any evidence at all.How is such a dispute about what reasonable people would do to be resolved? I suggest that, at the very least, Carrier owes us an explanation of the grounds on which he would reject particular instances of the schema, e.g. (shrink)

Reviewed Work: The Problem of Metaphysics by D. M. MacKinnon .

The most innovative and important parts of Bertrand Russell's Human Knowledge were the result of his first attempt in three decades to come to grips with the problem of induction, or, more generally, ‘non-demonstrative inference’. My purpose here is to argue that that work constituted giant progress on the problem; if I succeed, something will have been done to restore this work to its proper place in the history of philosophy and, correlatively, to rearrange that history.

Righting Epistemology defends an unrecognized Humean conception of epistemic justification, showing that he is no skeptic, and an argument of his that refutes all extant alternative conceptions. It goes on to trace the development of his thought in Sir Karl Popper, Nelson Goodman, W. V. Quine and Ludwig Wittgenstein.

IntroductionIt is at least a bit embarrassing, perhaps even scandalous, that debate should still rage over the sheer existence of qualia, but they continue to find able defenders after decades of being attacked as relics of ghostly substances, epiphenomenal non-entities, nomological danglers and the like; the intensity of the current confrontation is captured vividly by Daniel Dennett:What are qualia, exactly? This obstreperous query is dismissed by one author by invoking Louis Armstrong's legendary reply when asked what jazz was: “If you (...) gotta ask, you ain't never gonna get to know.” … If I succeed in my task, this move … will look as quaint and insupportable as a jocular appeal to the ludicrousness of a living thing-a living thing, mind you! -doubting the existence of elan vital. (shrink)

IntroductionIt is at least a bit embarrassing, perhaps even scandalous, that debate should still rage over the sheer existence of qualia, but they continue to find able defenders after decades of being attacked as relics of ghostly substances, epiphenomenal non-entities, nomological danglers and the like; the intensity of the current confrontation is captured vividly by Daniel Dennett:What are qualia,exactly?This obstreperous query is dismissed by one author (“only half in jest”) by invoking Louis Armstrong's legendary reply when asked what jazz was: (...) “If you gotta ask, you ain't never gonna get to know.” … If I succeed in my task, this move … will look as quaint and insupportable as a jocular appeal to the ludicrousness of a living thing-a living thing, mind you! -doubting the existence ofelan vital. (shrink)

Goodman concurs in Hume’s contention that no theory has any probability relative to any set of data, and offers two accounts, compatible with that contention, of how some inductive inferences are nevertheless justified. The first, framed in terms of rules of inductive inference, is well known, significantly flawed, and enmeshed in Goodman’s unfortunate entrenchment theory and view of the mind as hypothesizing at random. The second, framed in terms of characteristics of inferred theories rather than rules of inference, is less (...) well known, but provides a compelling view of inductive justification. Once the two accounts are clearly delineated, one can see that both are driven by a single deep conviction: that inductive justification can only be understood in terms of our actual inductive practice. (shrink)

Feelings of knowing (FoK) are introspective self-report ratings of the felt likelihood that one will be able to recognize a currently unrecallable memory target. Previous studies have shown that FoKs are influenced by retrieved fragment knowledge related to the target, which is compatible with the accessibility hypothesis that FoK is partly based on currently activated partial knowledge about the memory target. However, previous results have been inconsistent as to whether or not FoKs are influenced by the accuracy of such information. (...) In our study (N = 26), we used a recall-judge-recognize procedure where stimuli were general knowledge questions. The measure of partial knowledge was wider than those applied previously, and FoK was measured before rather than after partial knowledge. The accuracy of reported partial knowledge was positively related to subsequent recognition accuracy, and FoK only predicted recognition on trials where there was correct partial knowledge. Importantly, FoK was positively related to the amount of correct partial knowledge, but did not show a similar incremental relation with incorrect knowledge. (shrink)

Ashrams in Europe twenty-five hundred years ago? Greek philosophers studying in India? Meditation classes in ancient Rome? It sounds unbelievable, but it’s historically true. Alexander the Great had an Indian guru. Pythagoras, Empedocles, and Plotinus all encouraged their students to meditate. Apollonius, the most famous Western sage of the first century c.e., visited both India and Egypt—and claimed that Egyptian wisdom was rooted in India. In Lost Masters, award-winning author Linda Johnsen, digging deep into classical sources, uncovers evidence of (...) astonishing similarities between some of the ancient Western world’s greatest thinkers and India’s yogis, including a belief in karma and reincarnation. Today ancient Greek philosophers are remembered as the founders of Western science and civilization. We’ve forgotten that for over a thousand years they were revered as sages, masters of spiritual wisdom. Lost Masters is an exploration of our long-lost Western spiritual heritage and the surprising insights it can offer us today. (shrink)

Bredo C. Johnsen: Observation: What Quine calls observation sentences lie at the heart of his reflections on observation and its roles in prompting our theorizing, providing evidence for our theories, and serving as the test of those theories' truth. The first four sections of this chapter – “Observation sentences,” “The two types of observation sentence,” “Introspection,” and “Roles of experience” – are devoted to expounding and clarifying his fundamental conception of these sentences, showing that he recognized both objective (...) and subjective observation sentences, that correlatively he gives introspection an important place in our cognitive lives, and, in particular, that he assigns our introspective knowledge of our sensory experiences three important roles in his epistemology. Since about 1970, Quine's conception of what constitutes our evidence about the nature of empirical reality has been radically misunderstood by almost all his readers, with disastrous consequences for the understanding of his entire epistemology; a final section – “Stimulations as evidence” – is therefore devoted to remedying this situation. (shrink)

Bredo C. Johnsen1 misconceives my strictures concerning acceptance of the following principle : If A both knows that p and knows that p entails q, then A can come to know that q.Johnsen seems unaware that my criticism was intended to apply only after is made to appear in its most plausible light; that is, only after its consequent is interpreted as: ’It is logically possible for A to know that q.’ Without this interpretation might be dismissed simply (...) on the grounds that A suffers from some physical or psychological disability that prevents him from drawing inferences from what he knows.Properly interpreted, remains acceptable as long as the propositions substituted for p and q are such that it is at least logically possible for A to get evidence enough to make them known. Agreement on this point is itself enough to render Johnsen's own examples irrelevant. For instance, even though it may be physically impossible for A to get adequate evidence that in the constellation Andromeda there is a planet intermediate in size between Venus and Earth, the foregoing is still a fit substitution instance for q; but since such a q does not suffice to falsify the consequent of, it does nothing to generate any skeptical argument, either. (shrink)

This is a response to a recent Philosophical Studies article by Bredo Johnsen, in which he makes a number of criticisms of Putnamian anti-skeptical arguments.

Socrates is famous for claiming that ‘I know one thing: That I know nothing’. There is one subject that Socrates repeatedly claims to have expertise in, however: ta erôtika. Socrates also refers to this expertise as his erôtikê technê, which may be translated as ‘erotic expertise’. I argue that the purposes this expertise serve are, to a significant extent, educational in nature: Socrates has certain erotic educational methods that participate in his expertise on erôs. In addition, I suggest that Socrates (...) uses two kinds of psychological techniques while practicing his erotic expertise through these erotic educational methods. (shrink)