Wittgenstein on Scepticism and Nonsense

In the Tractatus Wittgenstein wrote: “Skepticism is not irrefutable, but obviously nonsensical when it tries to raise doubts where no questions can be asked.” In this paper I show how Wittgenstein developed this insight in On Certainty. My principal aim is to show that this is a logical insight, that it is bound up with the distinction between saying and showing, and that one misses the point of On Certainty if one reads it, as some commentators have, in epistemological terms. Throughout all of this I pay special attention to why Wittgenstein thought that skepticism is nonsensical, and what it might mean to say that philosophy is a logical investigation.     

Wittgenstein and Scepticism Wittgenstein at Work: Method in the PHILOSOPHICAL INVESTIGATIONS

Books reviewed:
Wittgenstein and Scepticism , Denis McManus (ed.). London & New York: Routledge, 2004. xi, 305 pp. $50 hb. Wittgenstein at Work: Method in the PHILOSOPHICAL INVESTIGATIONS , Erich Ammereller and Eugen Fischer (eds.). London & New York: Routledge, 2004. xxix, 263 pp. $50 hb. Reviewed by William H. Brenner, Old Dominion University Philosophy Department Old Dominion University Norfolk, VA 23529-0083, USA wbrenner@odu.edu     

Lotteries,Quasi-Lotteries,and Scepticism

I seem to know that I won't experience spaceflight but also that if I win the lottery, then I will take a flight into space. Suppose I competently deduce from these propositions that I won't win the lottery. Competent deduction from known premises seems to yield knowledge of the deduced conclusion. So it seems that I know that I won't win the lottery; but it also seems clear that I don't know this, despite the minuscule probability of my winning (if I have a lottery ticket). So we have a puzzle. It seems to generalize, for analogues of the lottery-proposition threaten almost all ordinary knowledge attributions. For example, my apparent knowledge that my bike is parked outside seems threatened by the possibility that it's been stolen since I parked it, a proposition with a low but non-zero probability; and it seems that I don't know this proposition to be false. Familiar solutions to this family of puzzles incur unacceptable costs—either by rejecting deductive closure for knowledge, or by yielding untenable consequences for ordinary attributions of knowledge or of ignorance. After canvassing and criticizing these solutions, I offer a new solution free of these costs.

Knowledge that p requires an explanatory link between the fact that p and the belief that p. This necessary but insufficient condition on knowledge distinguishes actual lottery cases from typical, apparently analogous ‘quasi-lottery’ cases. It does yield scepticism about my not winning the lottery and not experiencing spaceflight, but the scepticism doesn't generalize to quasi-lottery cases such as that involving my bike.     

Scepticism,defeasible evidence and entitlement

The paper starts by describing and clarifying what Williamson calls the consequence fallacy. I show two ways in which one might commit the fallacy. The first, which is rather trivial, involves overlooking background information; the second way, which is the more philosophically interesting, involves overlooking prior probabilities. In the following section, I describe a powerful form of sceptical argument, which is the main topic of the paper, elaborating on previous work by Huemer. The argument attempts to show the impossibility of defeasible justification, justification based on evidence which does not entail the (allegedly) justified proposition or belief. I then discuss the relation between the consequence fallacy, or some similar enough reasoning, and that form of argument. I argue that one can resist that form of sceptical argument if one gives up the idea that a belief cannot be justified unless it is supported by the totality of the evidence available to the subject—a principle entailed by many prominent epistemological views, most clearly by epistemological evidentialism. The justification, in the relevant cases, should instead derive solely from the prior probability of the proposition. A justification of this sort, that does not rely on evidence, would amount to a form of entitlement, in (something like) Crispin Wright’s sense. I conclude with some discussion of how to understand prior probabilities, and how to develop the notion of entitlement in an externalist epistemological framework.     

怀疑论,常识与实践

文章依次分析比较了摩尔、马尔科姆和维特根斯坦应对怀疑论的方式及各自的论证技巧,展示了常识在何种程度上能够给出一种避免怀疑论的基础。文章认为摩尔和马尔科姆的论证都是不充分的,维特根斯坦关于语法命题与经验命题的区分补充了其中缺失的部分,其中起作用的是一种游戏误置论证。这意味着,能够避免怀疑论的是一种实践态度。     

Foundationalism,Coherentism and Rule-Following Scepticism

Semantic holists view what one's terms mean as function of all of one's beliefs and applications. Holists will thus be coherentists about how one's usage is justified: showing that one's usage of a term is justified involves showing how it coheres with the rest of one's beliefs and applications. Semantic reductionists, on the other hand, will understand such justification in a classically foundationalist fashion. Now Saul Kripke has, on Wittgenstein's behalf, famously argued for a type of scepticism about meaning and the possibility of demonstrating the correctness of one's usage. However, Kripke's argument has bite only if one understands justification in classically foundationalist terms. Consequently, Kripke's arguments, if good, lead not to a type of scepticism about meaning, but rather to the conclusion that one should be a coherentist about the justification of our usage, and thus a holist about semantic facts.     

Verificationism, Realism And Scepticism

Verificationism has often seemed attractive to philosophers because of its apparent abilityto deliver us from scepticism. However, I argue that purely epistemological considerationsprovide insufficient reason for embracing verificationism over realism. I distinguish twotypes of sceptical problem: those that stem from underdetermination by the actual data,and those that stem from underdetermination by all possible data. Verificationismevades problems of the second sort, but is powerless in the face of problems of the firstsort. But problems of the first sort are equally pressing. Furthermore, there is some reasonto think that the two types of problem have a common origin. Thus the desire to avoidscepticism provides insufficient reason for adopting verificationism.     

Wittgenstein,education and religion

Conclusion Wittgenstein's approach to religion is an important part of any assessment of the significance of his thought as a whole for educational thinking and practice. As we have seen, although his view of religion is elusive and stands in need of definitive evaluation, it offers a number of insights and challenges.Whilst Wittgenstein's approach conflicts in important respects with the LR view of education in religion, because that view is based on important social and cultural realities which are significant for Wittgensteinian principles, it is not supplanted. The Wittgensteinian approach both supplies important perspectives which will enrich the LR view, whilst giving support to a greater pluralism in the way in which education in religion is conceived, including forms of substantial religious upbringing and schooling.     

Wittgenstein,mindreading and perception

Can we perceive others' mental states? Wittgenstein is often claimed to hold, like some phenomenologists, that we can. The view thus attributed to Wittgenstein is a view about the correct explanation of mindreading: He is taken to be answering a question about the kind of process mindreading involves. But although Wittgenstein claims we see others' emotions, he denies that he is thereby making any claim about that underlying process and, moreover, denies that any underlying process could have the significance it is claimed to have for this debate. For Wittgenstein, the question is not “Is this perception?” but “What do we mean by ‘perception' here?” and that question is answered by investigating the grammar of the relevant concepts. That investigation, however, reveals similarities and differences between what we call “perception” here and elsewhere. Hence, Wittgenstein's answer to the question “Can we perceive others' mental states?” is yes and no: Both responses can be justified by appeal to different concepts of perception. Wittgenstein, then, has much to contribute to our understanding of mindreading, but what he has to contribute is nothing like the view typically attributed to him here.     

Scepticism, perceptual knowledge, and doxastic responsibility

Arguments for scepticism about perceptual knowledge are often said to have intuitively plausible premises. In this discussion I question this view in relation to an argument from ignorance and argue that the supposed persuasiveness of the argument depends on debatable background assumptions about knowledge or justification. A reasonable response to scepticism has to show there is a plausible epistemological perspective that can make sense of our having perceptual knowledge. I present such a perspective. In order give a more satisfying response to scepticism, we need also to consider the standing of background beliefs. This is required since the recognitional abilities that enable us to have perceptual knowledge are informed by, or presuppose, a picture or conception of the world the correctness of which we have not ascertained. The question is how, in the face of this, to make sense of responsible belief-formation. In addressing this problem I make a suggestion about the standing of certain crucial beliefs linking appearances with membership of kinds.     

Scepticism,epistemic luck,and epistemic angst

A commonly expressed worry in the contemporary literature on the problem of epistemological scepticism is that there is something deeply intellectually unsatisfying about the dominant anti-sceptical theories. In this paper I outline the main approaches to scepticism and argue that they each fail to capture what is essential to the sceptical challenge because they fail to fully understand the role that the problem of epistemic luck plays in that challenge. I further argue that scepticism is best thought of not as a quandary directed at our possession of knowledge simpliciter, but rather as concerned with a specific kind of knowledge that is epistemically desirable. On this view, the source of scepticism lies in a peculiarly epistemic form of angst.

It is always by favour of Nature that one knows something.     

Machines,Logic and Wittgenstein

Philosophia - Wittgenstein’s “machines-as-symbols” are considered with respect to their historical sources and their symbolic and logical nature. Among these sources and...     

Wittgenstein,Aesthetics and Philosophy

Books reviewed: Peter B. Lewis (ed.), Wittgenstein, Aesthetics and Philosophy (Aldershot: Ashgate, 2004). 255 pp., price £49.50.
Reviewed by Ole Martin Skilleås, University of Bergen, Norway
Department of Philosophy
University of Bergen
Sydnesplassen 7
NO‐5007 Bergen
Ole.skilleas@fil.uib.no