Ruth Weintraub

This paper is not concerned with the (amply discussed) question as to the rational response to peer disagreement. Instead, it addresses a (considerably less often debated) problem to which many views about the (epistemic) significance of disagreement are vulnerable (to some extent or another): self-undermining. I reject several answers that have been proposed in the literature, defend one that has been offered (by meeting objections to it), and show that in its light, the prevalent assumption that the ‘equal-weight view’, a prominent view about disagreement, rationally requires us to suspend judgement about contentious matters, is seen to be too pessimistic.

Expressivism, as applied to a certain class of statements, evaluative ones, for instance, is constituted by two doctrines, only the first of which will concern me in this paper. Evaluative statements, according to this doctrine, aren’t propositional (susceptible of truth or falsity). In this paper, I will argue that one of the vexing problems (that I label the “logical problem”) this doctrine engenders for the expressivist is equally pressing for some cognitivists (who think evaluative statements do have a truth-value). I will present the difficulty and argue that some constructivists, who are cognitivists, cannot contend with it at all, and others must resort to more complex ways than the one available to other cognitivists.

My aim in this paper is to explore some metaphysical and psychological implications of the (contentious) idealist interpretation of the belief in external objects ("bodies") Hume ascribes to us in the Treatise. More specifically, I will argue that the interpretation commits Hume to the claim that space is spatially fragmented, both synchronically and (even more so) diachronically, and renders Hume incapable of allowing for all the spatial thoughts we think we can have. But (perhaps surprisingly) it does not impugn Hume's view of causation.

I start by considering Mark Steiner’s startling claim that Hume takes geometry to be synthetic a priori, which engenders the Kantian challenge to explain how such knowledge is possible. I argue, in response, that Steiner misinterprets the (deceptive) relevant passage from Hume, and that Hume, as the received view has it, takes geometry to be analytic, although in a more expansive sense of the word than the modern one. I then note a new challenge geometry engenders for Hume. Unlike Euclidean space, Humean space is finitely divisible, for which several Euclidean axioms and theorems do not hold. I argue, in response, that (crucially for his scientific project) Hume can account for our belief in the truth of Euclidean geometry on the basis of non-Euclidean ideas, although (innocuously for him) not all should be true. I conclude by arguing, on a less optimistic note, that Hume cannot point to a geometry that is true of our (discrete) ideas.

The mythical1 hungry ass, facing two identical bundles of hay equidistant from him, has engendered two related questions. Can he choose one of the bundles, there seemingly being nothing to incline him one way or the other? If he can, the second puzzle — pertaining to rational choice — arises. It seems the ass cannot rationally choose one of the bundles, because there is no sufficient reason for any choice.2In what follows, I will argue that choice is possible even when there is no option which is better than the others (section II), and that it is perfectly reasonable to choose an option even when there is no sufficient reason for it (section III). I will then (section IV) point to another puzzling feature of the ..

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.

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

Abstract:The question broached in the title may sound odd. It makes sense to ask whether Hume’s empiricism is successful, and whether it is the best way of rendering rigorous the (vague) empiricist view. But is it not obvious that Hume is an empiricist? I shall argue that the answer is negative, at least when we are concerned with methodological empiricism, pertaining to the way inquiry, both scientific and philosophical, must proceed. In support of my claim, I will distinguish between the theoretical question, pertaining to the methodological view Hume endorses, and the practical question, concerned with the way he conducts his inquiry. My conclusion will be that the answer to the first question is contentious, and the answer to the second is negative.

In the section of the Treatise titled ‘Of the immateriality of the soul’, Hume adduces an argument to show that nothing can be ‘locally conjoined’ with all of a person’s perceptions. The argument is seldom discussed, and deserves attention, mainly because it can be transformed into an argument against the very existence of a soul. In this paper, I present and closely examine both arguments, Hume’s argument and the one against the existence of the soul. Both, I conclude, are fallacious. In dem Abschnitt des Treatise mit dem Titel ‚Of the immateriality of the soul‘ bringt Hume ein Argument vor, das zeigen soll, dass nichts mit allen Perzeptionen einer Person ‚lokal verknüpft‘ sein kann. Das Argument wird selten diskutiert, verdient aber Aufmerksamkeit, hauptsächlich deshalb, weil es in ein Argument gegen die Existenz der Seele umgewandelt werden kann. In diesem Aufsatz stelle ich beide Argumente – Humes Argument und das gegen die Existenz der Seele – dar und untersuche sie im Detail. Ich gelange zu der Feststellung, dass beide Argumente fehlerhaft sind.

It is possible that a fair coin tossed infinitely many times will always land heads. So the probability of such a sequence of outcomes should, intuitively, be positive, albeit miniscule: 0 probability ought to be reserved for impossible events. And, furthermore, since the tosses are independent and the probability of heads (and tails) on a single toss is half, all sequences are equiprobable. But Williamson has adduced an argument that purports to show that our intuitions notwithstanding, the probability of an infinite sequence is 0. In this paper, I rebut his argument.No Abstract

Two kinds of considerations are thought to be relevant to the correct response to the discovery of a peer who disagrees with you about some question. The first is general principles pertaining to disagreement. According to the second kind of consideration, a theory about the correct response to peer disagreement must conform to our intuitions about test cases. In this paper, I argue against the assumption that imperfect conformity to our intuitions about test cases must count against a theory about peer disagreement, offer a principled way of shrugging off a theory’s failure to deliver the intuitive verdict, and consider the main extant theories from the new methodological perspective.

In the “diminution argument,” which Hume adduces in the Treatise section “Scepticism with Regard to Reason,” he infers from our universal fallibility that “all the rules of logic require a continual diminution, and at last a total extinction of belief and evidence.” My aim in this paper is, first, to show that on all extant interpretations of the argument, it turns out to be very weak, and, second, that there is in the vicinity a significant sceptical argument in support of the conclusion that all our beliefs are totally unjustified, an argument that cannot be easily dismissed.

RésuméSi on la définit comme une action contraire au bon jugement de l'agent, l'action acrasique se trouve exclue par le principe selon lequel une personne a forcément l'intention de faire ce qu'elle juge devoir faire. Une fois ce principe rejeté, comme je le propose ici, le problème traditionnel de l'acrasie, qui est celui de sa possibilité même, s'évanouit. Je soutiens, cependant, qu'un problème plus limité semble se poser si nous admettons que les actions acrasiques doivent s'expliquer par des raisons, et je requiers que les explications en de tels cas soient de type naturaliste. Je montre que la difficulté se trouve résolue par une compréhension adéquate de la nature des explications naturalistes.

There are very few philosophical issues which are so intimately associated with one single philosopher as is the problem of induction with Hume. This paper argues against this received opinion. It shows that Hume was neither the first to think induction problematic, nor the originator of the argument he adduced in support of the (sceptical) position. It then explains his (more modest) contribution. Its primary concern, however, is not historical. By considering Hume’s contribution to the problem of induction, it is argued, we can come to a better understanding of this recalcitrant problem.

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.

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

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.

Hume’s three principles of association, we are led to believe from the way Hume introduces them, are supposed to account for the formation of complex ideas out of simple ones. But the account he gives, I show, is pretty poor. But Hume, in fact, has an additional issue in mind: accounting for thoughts we have with ideas we already possess, e.g.: the way one idea brings to one’s conscious mind an idea previously formed and now lying dormant, so to speak. The answer Hume gives to this question, I argue, is quite passable.