Annalisa Coliva

In his “Common knowledge” (2016) and _The Transmission of Knowledge_ (2021), John Greco proposes a novel account of hinge propositions. Central to it is the idea that they are items of common knowledge – that is, of knowledge that is already present in the system, freely available to anyone, without having to figure it out by oneself or having to be taught it by others. As such, they are not subject to any quality control at all. Furthermore, they figure in a subject’s cognitive economy as items of procedural, mostly tacit knowledge, which is operative in the execution of actions and various cognitive tasks. After introducing the basics of Greco’s account, I consider it from a systematic and historical perspective and argue that, while instructive, it is wanting in several respects. Whereas some, among the myriad hinges Wittgenstein considers in _On Certainty_ (1969), may be known, there is no need to make them the content of a different kind of knowledge. Furthermore, we cannot have (evidential) justification and, _a fortiori_, knowledge of at least some other propositions that Wittgenstein considered as hinges. In passing, I also show that Greco’s account aligns much more with G. E. Moore’s ideas about the epistemic status of his truisms in “A defence of common sense” (1925) and the premises of his celebrated “Proof of an external world” (1939), than with Wittgenstein’s account of hinges and their epistemic significance in _On Certainty_.

Extended Rationality: A Hinge Epistemology provides a novel account of the structure of epistemic justification. Its central claim builds upon Wittgenstein's idea in On Certainty that epistemic justifications hinge on some basic assumptions and that epistemic rationality extends to these very hinges. It exploits these ideas to address major problems in epistemology, such as the nature of perceptual justifications, external world skepticism, epistemic relativism, the epistemic status of basic logical laws, of the Principle of the Uniformity of Nature, of our belief in the existence of the past and of other minds, and the nature of testimonial justification. Along the way, further technical issues, such as the scope of the Principle of Closure of epistemic operators under known entailment, the notion of transmission failure, and the existence of entitlements are addressed in new and illuminating ways.

In the recent literature on Moore's Proof of an external world, it has emerged that different diagnoses of the argument's failure are prima facie defensible. As a result, there is a sense that the appropriateness of the different verdicts on it may depend on variation in the kinds of context in which the argument is taken to be a move, with different characteristic aims. In this spirit, Martin Davies has recently explored the use of the argument within two different epistemic projects called respectively ‘deciding what to believe’ and ‘settling the question’. Depending on which project is in hand, according to Davies, the diagnoses of its failure—if indeed it fails—will differ. I believe that, by introducing the idea that the effectiveness of a valid argument may be epistemic project-relative, Davies has pointed the way to an important reorientation of the debates about Moore's Proof. But I wish to take issue with much of the detail of his proposals. I argue that Davies's characterization of his two projects is misleading (§1), and his account of their distinction defective (§2). I then canvass some suggestions about how it may be improved upon and about how further relevant kinds of epistemic projects in which Moore's argument may be taken to be a move can be characterized, bringing out how each of these projects impinges differently on the issue of the Proof's failure and of its diagnosis (§§3 and 4). In conclusion (§5) I offer an overview of the resulting terrain.

The thesis addresses the issues of error through misidentification and immunity to error through misidentification in relation to the problem of the first person. First, it provides an explanation of error through misidentification. Secondly, it shows that there are two possible ways of understanding immunity to error through misidentification. It is then argued that the first understanding of immunity to error through misidentification leads to what is labelled "the trilemma about the self". That is to say, either we provide an explanation of immunity to error through misidentification, but we subscribe to two contentious metaphysical views about the self-the Cartesian and the Idealist; or else we hold the view that the self is identical with a human being, but we have no explanation of immunity to error through misidentification. It is then shown that in order to solve the trilemma, a different understanding of immunity to error through misidentification must be offered. After discussing various possible understandings of immunity to error through misidentification, a sound account of it is finally provided. Moreover, it is shown how non-inferential, introspection-based mental self-ascriptions can comply with it, in such a way that they turn out to be logically immune to error through misidentification. Finally, by drawing on Evans' and Peacocke's accounts of the possession conditions of the first person concept-in which IEM I-judgements play a central role-, it is shown that it is a concept of a human being who thinks of herself as such. Hence, our first person concept is firmly anti-Cartesian and anti-Idealist. As a consequence, it is maintained that not only is there no need to hold the Cartesian and the Idealist metaphysics of the self in order to explain why some I-judgements can be immune to error through misidentification, but it is also argued that one can no longer be either Cartesian or Idealist. For that would expose one to conceptual incoherence.

Hinge epistemology is a family of theories about justification which give centre-stage to Wittgenstein’s notion of a “hinge”. In the following, I will first put forward some basic methodological considerations regarding the relationship between merely exegetical work on, in particular, Wittgenstein’s texts, and more theoretically committed work, which aims at developing suggestions that can be found in the texts, even though they are not clearly attributable as such to their author. I will then summarize the main tenets of what, to date, is still the most widespread reading of On Certainty —the so-called “framework reading”. In light of the initial methodological considerations and of this exegesis of On Certainty, I will then review some contemporary attempts at developing Wittgenstein’s ideas in an anti-skeptical direction, such as Crispin Wright’s, Michael Williams’ and Duncan Pritchard’s. I will argue that, their intrinsic merits notwithstanding, they fail to take proper measure of Wittgenstein’s own position. I will then close by sketching my own version of hinge epistemology and by highlighting points of contact and disagreement with Wittgenstein’s own views as portrayed by the framework reading.

This paper explores the idea of disagreement with oneself, in both its diachronic and synchronic forms. A puzzling case of synchronic intrapersonal disagreement is presented and the paper considers its implications. One is that belief is a genus that comes in two species: as disposition and as commitment. Another is that self-deception consists in a conflict between one's beliefs as dispositions and one's beliefs as commitments. Synchronic intrapersonal disagreement also has implications for the condition that needs to be fulfilled in order to have genuine disagreement tout court, and for the different ways in which it can be satisfied.

There is nowadays a tendency, to be dated back to Gordon Baker’s reading, to interpret the later Wittgenstein as proposing a thoroughly therapeutic view of philosophy. Accordingly, he was not dealing with philosophical problems to show how they originated in a misunderstanding of our language. For that would have presupposed his advancing theses about how language works. Rather, his therapeutic method was in the service of liberating philosophers from the kind of intellectual prejudices that would prompt them to ask philosophical questions. The article examines the complex interconnections between Wittgenstein and Waismann to show how the thorough-going therapeutic reading of Wittgenstein proposed by Baker is in fact a projection of Waismann’s ideas onto Wittgenstein. Moreover, by looking at Wittgenstein’s complex anti-skeptical strategies in On Certainty, it shows that his aim was not to provide therapy against philosophers’ inclinations, but to show that skeptical doubts are misguided and nonsensical.

In this paper I argue that, contrary to what several prominent scholars of On Certainty have claimed, Wittgenstein did not maintain that simple mathematical propositions like “2 × 2 = 4” or “12 × 12 = 144,” much like G. E. Moore’s truisms, could be examples of hinge propositions. In particular, given his overall conception of mathematics, it was impossible for him to single out these simpler mathematical propositions from the rest of mathematical statements, to reserve only to them a normative function. I then maintain that these mathematical examples were introduced merely as objects of comparison to bring out some peculiar features of the only hinges he countenanced in On Certainty, which were all outside the realm of mathematics. I then close by gesturing at how the distinction between mathematical hinges and non-hinges could be exemplified and by exploring its consequences with respect to philosophy of mathematics.

Hinge epistemology has to dispel the worry that disagreeing over hinges is rationally inert. Building on a companion piece (Coliva and Palmira 2020), this paper offers a constitutivist solution to the problem of rational inertia by maintaining that a Humean sceptic and a hinge epistemologist disagree over the correct explication of the concept of epistemic rationality. The paper explores the implications of such a solution. First, it clarifies in what sense a disagreement over hinges would be a conceptual disagreement. Secondly, it uses considerations about the (alleged) rational inertia of hinge disagreement to offer a test whereby to demarcate genuine hinges from merely entrenched beliefs. Thirdly, it offers a response to the challenge of explaining why we have reason to engage in the epistemic practices that hinges are constitutive of in the first place. Fourthly, it argues that the constitutivist approach to hinge disagreement does not result in a relativist view.

In lieu of an abstract, here is a brief excerpt of the content:Philosophy, Psychiatry, & Psychology 9.1 (2002) 41-46 [Access article in PDF] On What There Really Is to Our Notion of Ownership of a Thought Annalisa Coliva JOHN CAMPBELL'S REPLY to my paper aims at reestablishing the point that there are two strands to our notion of ownership of a thought. There are two ways of cashing out this idea. 1 First, one could say that A is the owner of a thought if and only if both the following two independent conditions apply 2 : (1) X is introspectively aware of a token thought and (2) X is the person who formed that token thought. Second, one may hold that there are twodifferent and independent notions of ownership of a thought, call it O1 and O2, corresponding to (1) and (2), respectively. For brevity, I will refer only to the first interpretation. But what I will be saying will apply, mutatis mutandis, to both.On this view, thought insertion would be a case in which someone thinks that (1) is satisfied, while (2) is not and, therefore, denies that the thought she is introspectively aware of is her own. 3 Campbell's explanation of thought insertion is quite clear: the subject has prima facie reasons to think that she is not the person who formed that token thought—maybe because she does not experience that thought as formed by herself—and, therefore, has prima facie reasons to deny that she is its owner, but she is mistaken in identifying the producer of the thought and what she says is false, yet reasonable. 4 Notice, however, an important consequence of Campbell's model. If (1) and (2) are independent conditions, then one could obtain without the other. Hence, it must be conceivable that one is introspectively aware of a thought that one has not produced. Indeed, cases of multiple personality, if taken literally, might be taken as examples of this kind of situation: person A and person B inhabit the same body, A can have access to B's thoughts, yet B remains their producer. So A could actually say something like "I'm thinking (i.e. I am immediately aware) that p, but this is not my thought (it is not the thought I produced), it's B's (the thought that B produced)" and what she would be saying would in fact be true.Yet, a simple-minded reaction one may have toward this line of explanation is this: If the subject is either saying something false, but reasonable, or, indeed, something altogether true, when she says "I'm thinking 'Kill God,' but this isn't my thought, it's Chris'," why should we consider her report as an expression of some kind of cognitive illusion, 5 which we take as a symptom of mental illness, as opposed to, at most, a possible mistake in identifying the producer of the thought? And, connectedly, why should we try to cure her, rather than just, at most, correct her? [End Page 41]Hence, the whole dispute between Campbell and me hinges on whether it is logically possible for one to be introspectively aware of a thought and yet not be its producer. Campbell claims that it is, whereas I deny that this is a genuine possibility. He holds that these are two independent conditions and that the one can obtain without the other, whereas I hold that they are not independent and that they stand or fall together. Campbell is fully aware of being making a surprising claim because, as he points out, "[The two strands in the ordinary notion of ownership of a thought] do not ordinarily even seem to come apart" (Campbell 2002, italics mine). Yet he offers in its support no more than an analogy between being the person who produced a certain signature and being the person who produced a given token thought. Let us look at it closer.Consider the following situation: a person NN looks at a piece of paper with NN written on it and wonders whether she is the...