Ruth-Claire Weintraub

Fallibilism is an attractive epistemological position, avoiding the Scylla of rationalism, and the Charybdis of scepticism. Acknowledging, on the one hand, human imperfection, yet claiming that science and rational inquiry are possible. Fallibilism is a thesis, but equally importantly – an epistemological recommendation. that we should never be absolutely sure of anything. My aim in this paper is to drive a wedge between the thesis and the recommendation. The (eminently plausible) doctrine, I shall argue, cannot be used to ground the epistemological prescription for caution.

Comparisons between utilities pose a pressing problem if, while incapable of being grounded, they are required in ethical deliberation. My aim is to consider whether there are epistemological impediments to implementing such ethical choices. Can we find ourselves being persuaded of the ethical need to compare utilities of different individuals, yet unable to do so because the comparisons cannot be warranted? I argue that the problem cannot arise; no plausible moral principle will invoke magnitudes which are inscrutable.

Hume’s familiar sceptical argument against induction brands as irrational our practice of generalising from observed regularities because of its reliance on the assumption that nature is uniform, an assumption which is unjustifiable. The argument which I wish to consider focuses instead on the observed regularities that are required if we are legitimately to extrapolate from experience. According to Hume, the paradigm type of inductive reasoning involves a constant conjunction. But in fact we do not encounter such invariable uniformities: our experience is, almost invariably, irregular. So setting aside Hume’s sceptical qualms about the very attempt to form expectations about the hitherto unobserved, how can we justify our ignoring such irregularities? My conclusion is that, even if the principle of uniformity can be justified, our practice is irrational by Hume’s lights. This is a new Humean critique of our “causal reasoning,” for, although Hume does not present it, the ingredients are all his.

According to the received view, Hume is a much more rigorous and consistent concept-empiricist than Locke. Hume is supposed to have taken as a starting point Locke's meaning-empiricism, and worked out its full radical implications. Locke, by way of contrast, cowered from drawing his theory's strange consequences. The received view about Locke's and Hume's concept-empiricism is mistaken, I shall argue. Hume may be more uncompromising (although he too falters), but he is not more rigorous than Locke. It is not because of (intellectual) timidity that Locke does not draw Hume's conclusions from his empiricism. It is, rather, because of his much sounder method.

Do we really know the things we think we know? Are any of our beliefs reasonable? Scepticism gives a pessimistic reply to these important epistemological questions - we don't know anything; none of our beliefs are reasonable. But can such a seemingly paradoxical claim be more than an intellectual curiousity? And if it is, can it be refuted? Ruth Weintraub answers yes to both these questions. The sceptical challenge is a formidable one, and should be confronted, not dismissed. The theoretical and practical difficulties it presents - in that the sceptical life cannot be lived, and the doctrine seems self-defeating - are in fact superficial, according to Ruth Weintraub. Her study looks at the sceptical arguments of Descartes, Hume and the ancient Greek sceptic, Sextus Empiricus. The author argues that by drawing on philosophy, rather than science, the sceptical challenge can be answered. _The Sceptical Challenge_ is a bold and original response to scepticism; it represents a new way of looking at the field for philosophers of epistemology.

An impossibility result pertaining to the aggregation of individual judgements is thought by many to have significant implications for political theory, social epistemology and metaphysics. When members of a group hold a rational set of judgments on some interconnected questions, the theorem shows, it isn't always (logically) possible for them to aggregate their judgements into a collective one in conformity with seemingly very plausible constraints. I reject one of the constraints which engender the dilemma. The analogy with the lottery paradox, I argue, shows that rational belief needn't be consistent. So the alleged implications of the dilemma are dispelled

In this paper, I examine the possibility of accounting for the rationality of belief-formation by utilising decision-theoretic considerations. I consider the utilities to be used by such an approach, propose to employ verisimilitude as a measure of cognitive utility, and suggest a natural way of generalising any measure of verisimilitude defined on propositions to partial belief-systems, a generalisation which may enable us to incorporate Popper's insightful notion of verisimilitude within a Bayesian framework. I examine a dilemma generated by the decision-theoretic procedure and consider an adequacy condition (immodesty) designed to ameliorate one of its horns. Finally, I argue in a sceptical vein that no adequate verisimilitude measure can be used decision-theoretically.