Keith DeRose

Practical deliberation often involves conditional judgements about what will happen if certain alternatives are pursued. It is widely assumed that the conditionals useful in deliberation are counterfactual or subjunctive conditionals. Against this, I argue that the conditionals of deliberation are indicatives. Key to the argument is an account of the relation between ‘straightforward’ future-directed conditionals like ‘If the house is not painted, it will soon look quite shabby’ and ‘ “were”ed-up’ FDCs like ‘If the house were not to be painted, it would soon look quite shabby’: an account on which both of these types of FDCs are grouped with the indicatives for semantic treatment and on which, while conditionals of both types are properly used in means/ends deliberations, those of the ‘were’ed-up variety are especially well suited for that purpose.

Recently, new life has been breathed into the ancient philosophical topic of skepticism. The subject of some of the best and most provocative work in contemporary philosophy, skepticism has been addressed not only by top epistemologists but also by several of the world's finest philosophers who are most known for their work in other areas of the discipline. Skepticism: A Contemporary Reader brings together the most important recent contributions to the discussion of skepticism. Covering major approaches to the skeptical problem, it features essays by Anthony Brueckner, Keith DeRose, Fred Dretske, Graeme Forbes, Christopher Hill, David Lewis, Thomas Nagel, Robert Nozick, Hilary Putnam, Ernest Sosa, Gail Stine, Barry Stroud, Peter Unger, and Ted Warfield. The book opens with a thorough introduction that outlines the skeptical problem, explains the dominant responses to skepticism, and discusses the strengths, weaknesses, and unresolved issues of each response, providing undergraduate students and nonphilosophers with the background and context necessary to understand the essays. Skepticism: A Contemporary Reader serves as an ideal text for courses in epistemology and skepticism and will also appeal to professional philosophers and interested general readers.

Thomas Blackson does not question that my argument in section 2 of “Assertion, Knowledge and Context” establishes the conclusion that the standards that comprise a truth-condition for “I know that P” vary with context, but does claim that this does not suffice to validly demonstrate the truth of contextualism, because this variance in standards can be handled by what we will here call Subject-Sensitive Invariantism (SSI), and so does not demand a contextualist treatment. According to SSI, the varying standards that comprise a truth-condition of “I know that P” are sensitive to factors that attach to the speaker as the putative subject of knowledge, rather than as the speaker of the knowledge attribution. That is, according to SSI, these factors of the subject’s context determine a single set of standards that govern when the subject himself, or any other speaker, including those not engaged in conversation with the subject, can truthfully say that the subject “knows.” Thus, we do not get the result that contextualists insist on: that one speaker can truthfully say the subject “knows,” while another speaker, in a different and more demanding context, can say that the subject does “not know”, even though the two speakers are speaking of the same subject knowing (or not knowing) the same proposition at the same time. Given the possibility of SSI, Blackson concludes that I “either assumed without argument that [SSI] is false or failed to distinguish the different ways the standard for knowledge might be determined.” I indeed have long assumed that SSI can’t be right, and so have taken a different form of invariantism to be the real threat to contextualism. But since SSI, and views like it, now seem to be getting considerable attention, it is worth articulating why I find it unpromising.