In this article I have two primary goals. First, I present two recent views on the distinction between knowledge-that and knowledge-how (Stanley and Williamson, The Journal of Philosophy 98(8):411–444, 2001; Hetherington, Epistemology futures, 2006). I contend that neither of these provides conclusive arguments against the distinction. Second, I discuss studies from neuroscience and experimental psychology that relate to this distinction. Having examined these studies, I then defend a third view that explains certain relevant data from these studies by positing the (...) double dissociation of knowledge-that and knowledge-how and that is also able to do explanatory work elsewhere. (shrink)

In the 1960’s and 70’s Jaakko Hintikka has written extensively about epistemic logic, epistemic concepts and ordinary epistemic discourse. As a (graduate) student of Jaakko’s toward the end of that period, I was somewhat familiar with that body of work and even discussed some fragments of it in my dissertation on the pragmatics of knowledge. Since then my interests developed in different directions, toward philosophy of mind and cognitive science in general and commonsense or naive psychology in particular. This paper (...) looks back at Jaakko’s work on epistemic discourse from the vantage point of my later work on naive psychology. (shrink)

Guerzoni and Sharvit (Linguistics and Philosophy 30:361–391, 2007) provide an argument that plural, but not singular, wh-phrases may contain a negative polarity item in their restriction, and connect this with the semantic property of exhaustivity. I will show that this claim is factually incorrect, and that the theory of negative polarity licensing does not need to be complicated by taking number distinctions into account. In addition, I will argue that number distinctions do not appear to be relevant for polarity items (...) in the restriction of definite noun phrases either. (shrink)

A picture of the world as chiefly one of discrete objects, distributed in space and time, has sometimes seemed compelling. It is however one of two main targets of this work; for it is seriously incomplete. The picture leaves no space for stuff like air and water. With discrete objects, we may always ask "how many?," but with stuff the question has to be "how much?" Within philosophy, stuff of certain basic kinds is central to the ancient pre-Socratic world-view; but (...) it also constitutes the field of modern chemistry and is a major factor in ecology. Philosophers these days are unlikely to deny that stuff exists. But they are very likely to deny that it is ("ultimately") to be contrasted with things, and it is on this account that logic and semantics figure largely in the framework of the book. Elementary logic is a logic which takes values for its variables; and these values are precisely distinct individuals or things. Existence is then symbolized in just such terms; and this, it is proposed, creates a pressure for "reducing" stuff to things. Non-singular expressions, which include words for stuff, "mass" nouns, and also plural nouns, are "explicated" as semantically singular. Here then is the second target of the work, only the first chapter of which is here included. The posit that both mass and plural nouns name special categories of objects (set-theoretical "collections" of objects in the one case, mereological "parcels" or "portions" of stuff in the other) represents the imposition of an alien logic upon both the many and the much. (shrink)

The 'paper' is itself an abstract, hopefully useful, of the book and its chapters from Clarendon Press (April 2006).

The views of Quine and Strawson on the significance of 'mass terms' are rehearsed, and the metaphysical status of substances, in the chemist's sense, is considered. It is urged that the ontological dichotomy of particulars and universals is not adequate to accommodate such substances, which are in a sense to be explicated concrete but non-particular.

Philosophy and Phenomenological Research (forthcoming).

I have two main objectives. The first is to get a better understanding of what is at issue between friends and foes of higher-order quantification, and of what it would mean to extend a Boolos-style treatment of second-order quantification to third- and higherorder quantification. The second objective is to argue that in the presence of absolutely general quantification, proper semantic theorizing is essentially unstable: it is impossible to provide a suitably general semantics for a given language in a language of (...) the same logical type. I claim that this leads to a trilemma: one must choose between giving up absolutely general quantification, settling for the view that adequate semantic theorizing about certain languages is essentially beyond our reach, and countenancing an open-ended hierarchy of languages of ever ascending logical type. I conclude by suggesting that the hierarchy may be the least unattractive of the options on the table. (shrink)

In this paper, we present a number of problems for intellectualism about knowledge-how, and in particular for the version of the view developed by Stanley & Williamson 2001. Their argument draws on the alleged uniformity of 'know how'-and 'know wh'-ascriptions. We offer a series of considerations to the effect that this assimilation is problematic. Firstly, in contrast to 'know wh'-ascriptions, 'know how'-ascriptions with known negative answers are false. Secondly, knowledge-how obeys closure principles whose counterparts fail for knowledge-wh and knowledge-that. Thirdly, (...) as opposed to knowledge-wh and knowledge-that, knowledge-how is inferentially isolated from further knowledge-that. We close by providing some evidence against the further reduction of knowledge-wh to knowledge-that, which is presupposed by the intellectualist theory under discussion. (shrink)

I consider the idea of a propositional logic of location based on the following semantic framework, derived from ideas of Prior. We have a collection L of locations and a collection S of statements such that a statement may be evaluated for truth at each location. Typically one and the same statement may be true at one location and false at another. Given this semantic framework we may proceed in two ways: introducing names for locations, predicates for the relations among (...) them and an “at” preposition to express the value of statements at locations; or introduce statement operators which do not name locations but whose truth-conditional effect depends on the truth or falsity of embedded statements at various locations. The latter is akin to Prior’s approach to tense logic. In any logic of location there will be some basic operators which we can define. By ringing the changes on the topology of locations, different logical systems may be generated, and the challenge for the logician is then in each case to find operators, axioms and rules yielding a proof theory adequate to the semantics. The generality of the approach is illustrated with familiar and not so familiar examples from modal, tense and place logic, mathematics, and even the logic of games. To the memory of Ted Dawson, who introduced me to philosophy and the writings of Arthur Prior. (shrink)

This paper outlines a new approach to the task of giving an account of the meaning of moral statements: a sort of "conceptual role semantics", according to which the meaning of moral terms is given by their role in practical reasoning. This role is sufficient both to distinguish the meaning of any moral term from that of other terms, and to determine the property or relation (if any) that the term stands for. The paper ends by suggesting reasons for regarding (...) this "conceptual role semantics" approach as preferable to noncognitivism, the causal theory of reference, and noncircular conceptual analysis. (shrink)

Experimental data suggest that the division between the visual ventral and dorsal pathways may indeed indicate that static and dynamical information is processed separately. Contrary to Hurford, it is suggested that the ventral pathway primarily generates representations of objects, whereas the dorsal pathway produces representations of events. The semantic object/event distinction may relate to the morpho-syntactic noun/verb distinction.

This paper is roughly in two parts. The first deals with whether know-how is constituted by propositional knowledge, as discussed primarily by Gilbert Ryle (1949) The concept of mind. London: Hutchinson, Jason Stanley and Timothy Williamson (2001). Knowing how. Journal of Philosophy, 98, pp. 411–444 as well as Stephen Hetherington (2006). How to know that knowledge-that is knowledge-how. In S. Hetherington (Ed.) Epistemology futures. Oxford: Oxford University Press. The conclusion of this first part is that know-how sometimes does and sometimes (...) does not consist in propositional knowledge. The second part defends an analysis of know-how inspired by Katherine Hawley’ (2003). Success and knowledge-how. American Philosophical Quarterly, 40, pp. 19–31, insightful proposal that know-how requires counterfactual success. I conclude by showing how this analysis helps to explain why know-how sometimes does and sometimes does not consist of propositional knowledge. (shrink)

Bare plurals ( dogs ) behave in ways that quantified plurals ( some dogs ) do not. For instance, while the sentence John owns dogs implies that John owns more than one dog, its negation John does not own dogs does not mean “John does not own more than one dog”, but rather “John does not own a dog”. A second puzzling behavior is known as the dependent plural reading; when in the scope of another plural, the ‘more than one’ (...) meaning of the plural is not distributed over, but the existential force of the plural is. For example, My friends attend good schools requires that each of my friends attend one good school, not more, while at the same time being inappropriate if all my friends attend the same school. This paper shows that both these phenomena, and others, arise from the same cause. Namely, the plural noun itself does not assert ‘more than one’, but rather the plural denotes a predicate that is number neutral (unspecified for cardinality). The ‘more than one’ meaning arises as an scalar implicature, relying on the scalar relationship between the bare plural and its singular alternative, and calculated in a sub-sentential domain; namely, before existential closure of the event variable. Finally, implications of this analysis will be discussed for the analysis of the quantified noun phrases that interact with bare plurals, such as indefinite numeral DPs ( three boys ), and singular universals ( every boy ). (shrink)