This paper addresses the issue of rule-following in the context of the problem of the criterion. It presents a line of reasoning which concludes we do not know what rule we follow, but which develops independently of the problem of extrapolation that plays a major role in many recent discussions of rule-following. The basis of the argument is the normativity of rules, but the problem is also distinct from the issue of the gap between facts and values in axiology. The paper further points out that the epistemic problem of not knowing what rule we follow leads to the outright denial of rule-following.

Skepticism about the external world may very well be correct, so the question is in order: what theory of knowledge flows from skepticism itself? The skeptic can give a relatively simple and intuitive account of knowledge by identifying it with indubitable certainty. Our everyday ‘I know that p’ claims, which typically are part of practical projects, deploy the ideal of knowledge to make assertions closely related to, but weaker than, knowledge claims. The truth of such claims is consistent with skepticism; various other vexing problems don’t arise. In addition, even if no claim about the world outside my mind can be more probable than its negation, the project of pure scientific research remains well motivated.

Anyone who endorses Universalism and Four Dimensionalism owes us an argument for those controversial mereological theses. One may put forth David Lewis’s and Ted Sider’s arguments from vagueness. However, the success of those arguments depends on the rejection of the epistemic view of vagueness, and thus opens the door to a fatal confrontation with one particularly troubling version of The Problem of the Many. The alternative for friends of Universalism and Four Dimensionalism is to abandon those currently fashionable arguments in favor of others which are consistent with the epistemic view of vagueness and with the elegant solution it furnishes to that problem.

This paper launches a new criticism of Michael Smith’s advice model of internalism. Whereas Robert Neal Johnson argues that Smith’s advice model collapses into the example model of internalism, the author contends that taking advice seriously pushes us instead toward some version of externalism. The advice model of internalism misportrays the logic of accepting advice. Agents do not have epistemic access to what their fully rational selves would advise them to do, and so it is necessary for a model of practical reason based upon advice to reflect the fact that agents take advice only from other people. This fact mayor may not support internalism. Whether it does depends upon the content of the good adviser’s advice, something we cannot know unless we ourselves are fully rational. We see in a new way, then, how the internalism/externalism debate depends upon the content of practical reason.

George Wilson has recently defended Kripke’s well-known interpretation of Wittgenstein against the criticisms of John McDowell. Wilson claims that these criticisms rest on misunderstandings of Kripke and that, when correctly understood, Kripke’s interpretation stands up to them well. In particular, Wilson defends Kripke’s Wittgenstein against the charge of “non-factualism” about meaning. However, Wilson has not appreciated the full significance of McDowell’s criticism. I use a brief exploration of Kripke’s analogy between Wittgenstein and Hume to put this significance in sharp relief. It emerges that McDowell’s response to Kripke’s Wittgenstein account of meaning is in important respects analogous to Kant’s response to Hume’s account of causality, particularly Kant’s complaint that Hume reduced the objective necessity of the causal nexus to a merely subjective necessity. In the same way Kripke’s Wittgenstein reduces the objective normative force of meanings to a “quasi-subjective.” community-relative status.

In the process of arguing against all theories of extended material objects made up of simples, Dean Zimmerman has recently argued against the compossibility of continuous closed and continuous open material objects. But it is surely undeniable that point-like material objects are possible; plausible principles of recombination and the principle of unrestricted composition then lead to the possibility Zimmerman rejects. Fortunately, Zimmerman’s arguments (inspired by Brentano’s remarks on the concept of contact) can be resisted: what appear to be implausible modal consequences of the compossibility of open and closed continuous material objects turn out to be merely the results of a decision to use ‘material object’ in a certain way.