The core entities of computer science include formal languages, spec-ifications, models, programs, implementations, semantic theories, type inference systems, abstract and physical machines. While there are conceptual questions concerning their nature, and in particular ontological ones (Turner 2018), our main focus here will be on the relationships between them. These relationships have an extensional aspect that articulates the propositional connection between the two entities, and an intentional one that fixes the direction of governance. An analysis of these two aspects will drive (...) our investigation; an investigation that will touch upon some of the central concerns of the philosophy of computer science (Turner 2017). (shrink)

La discussion sur le langage privé que l’on trouve dans les Recherchesphilosophiques a été écrite entre 1937 et 1945, après que les 190 premières remarques de la partie I du livre eurent presque atteint leur forme finale. Les textes post-1936 sur le langage privé constituent un nouveau départ, dans sa lettre et son esprit, par rapport au matériau d’avant 1936.Néanmoins, entre 1929 et 1936, Wittgenstein s’est penché à plusieurs reprises sur l’idée d’un langage « que moi seul peux comprendre ». (...) Un volet de cette question qui, lui, est abordé directement dans les Recherches, c’est l’idée que « si j’appliquais le mot “douleur” uniquement à ce que j’ai nommé jusqu’ici “ma douleur”, et les autres “la douleur de L.W.”, je ne ferais ainsi aucun tort aux autres, si toutefois l’on avait prévu une notation qui d’une façon ou d’une autre, permettrait de pallier l’absence du mot “douleur” dans d’autres combinaisons ». Cependant, la discussion de cette question dans les Recherches est beaucoup plus brève que dans les textes d’avant 1936. J’examine le rapport entre ce § 403 des Recherches d’un côté, et de l’autre côté les textes des cahiers de 1929 et les Remarques philosophiques , en retraçant le développement initial de cette argumentation et en explorant les principales lignes de continuité et de discontinuité dans le traitement que Wittgenstein réserve à la question du langage privé.The discussion of private language in the Investigations was written between 1937 and 1945, after the first 190 remarks of Part I of the book had almost reached their final form. The post-1936 writing on private language represents a fresh start, both in wording and in conception, on the pre-1936 material.Nevertheless, Wittgenstein did repeatedly discuss the idea of a language which “only I myself can understand” during 1929-36. One strand in this discussion that is directly taken up in the Investigations is the idea that “If I were to reserve the word ‘pain’ solely for what I had hitherto called ‘my pain”, and others “L.W.’s pain,” I should do other people no injustice, so long as a notation were provided in which the loss of the word ‘pain’ in other connexions were somehow supplied.” However, the discussion of this topic in the Investigations is much briefer than in the pre-1936 writing. I look at the relationship between §403 and texts from the 1929 notebooks and the Philosophical Remarks, assembled in the spring of 1930, mapping out the earlier development of this line of argument and exploring the principal continuities and discontinuities in Wittgenstein’s treatment of private language. (shrink)

En este trabajo trato de dar respuesta a la cuestión acerca de si los conceptos formales del Tractatus Logico-Philosophicus de Wittgenstein son o no categorías ontológicas. Mi respuesta es que no. Así, después de ofrecer una definición de ‘ontología’ y diferentes lecturas sobre las proposiciones iniciales del Tractatus, presento la noción de concepto formal o lógico, así como diferentes interpretaciones en relación con el papel de esos conceptos en el Tractatus. Después, y teniendo en consideración lo dicho en las secciones (...) precedentes, presento mi propia lectura de las proposiciones iniciales en términos de expresiones conceptuales o gramaticales, la distinción tanto en extensión como en intensión de las nociones de concepto formal o lógico y categoría ontológica y la disolución de la ontología, que no de la lógica. Finalmente ofrezco unas conclusiones finales que recogen aspectos centrales de la discusión precedente. (shrink)

This paper focuses on a central aspect of the “picture theory” in the Tractatus – the “identity requirement” – namely the idea that a proposition represents elements in reality as combined in the same way as its elements are combined. After introducing the Tractatus' views on the nature of the proposition, I engage with a “nominalist” interpretation, according to which the Tractatus holds that relations are not named in propositions. I claim that the nominalist account can only be maintained by (...) rejecting the “identity requirement.” I then consider an opposite – “realist” – interpretation, according to which Tractarian names include names of properties and relations. I argue that, although it can accommodate the “identity requirement,” the realist interpretation falls short of providing a correct interpretation of the Tractatus' conception of a name. I conclude by presenting an alternative account (to both nominalism and realism) of the Tractatus' conception of a name. (shrink)

Abstract: Interpretations of the Tractatus divide into what might be called a metaphysical and an anti-metaphysical approach to the work. The central issue between the two interpretative approaches has generally been characterised in terms of the question whether the Tractatus is committed to the idea of ‘things’ that cannot be said in language, and thus to the idea of a distinctive kind of nonsense: nonsense that is an attempt to say what can only be shown. In this paper, I look (...) at this dispute from a different perspective, by focusing on the treatment of the concept of internal relations. By reference to the work of Peter Hacker, Hidé Ishiguro and Cora Diamond, I show how this concept is understood quite differently in each of the two interpretative traditions. I focus particularly on how Wittgenstein's idea of the ‘internal relation of depicting that holds between language and the world’ (Tractatus 4.014) might be understood within the two interpretative approaches. I offer some reasons in support of the anti-metaphysical treatment of the concept. (shrink)

The ‘Private Language’ sections of the Philosophical Investigations §§ 243–315 serve to undermine the idea that our ordinary felt sensations, e.g., of heat, or cold, or pain, together with our experienced impressions of colour or of sound, are ‘private’ or ‘inner’ objects, where an object mirrors in the mental realm what we associate with that of the physical. This paper explores Wittgenstein's method in these sections, together with the work of several of his commentators who agree with his ‘therapeutic’ approach (...) to the denial of a possible private language. More significantly, however, it discovers a paradox in the fact that a number of philosophers who claim that his ‘Argument Against Private Language’ is unsuccessful point in reaching this conclusion to the very features concerning first-person sensation ascription that Wittgenstein employs to reveal that our ordinary sensations are not ‘private’ to us in that sense identified in § 243, which talks of ‘a language used to refer to what only its speaker can know’, viz, ‘his immediate private sensations’. This helps to explain why there is still no general agreement on the significance of §§ 243–315. (shrink)

Some philosophers of education think that there is a pedagogically informative concept of training that can be gleaned from Wittgenstein's later writings: training as initiation into a form of life. Stickney, in 'Training and Mastery of Techniques in Wittgenstein's Later Philosophy: A response to Michael Luntley'takes me to task for ignoring this concept. In this essay I argue that there is no such concept to be ignored. I start by noting recent developments in Wittgenstein scholarship that raise serious issues about (...) how we should handle the translation of Arbrichtung and arbrichten. I then concentrate on the substantive philosophical issues about the very idea that training can have a pedagogically productive role in education. I show that what work training does is a function of the prior skill set of the trainee. This means that we have to endorse some form of rationalism and acknowledge that the learner can only respond to training if they already possess sufficient mental equipment to generate the appropriate responses. (shrink)

In this paper I take up Peters' invitation to think of education in terms of initiation. I argue that the concept of initiation demands much closer scrutiny and analysis in order to provide a substantive thesis about education. A key challenge concerns how we conceive of the initiate. The very idea of initiation suggests that, in some interesting sense, the pupil qua initiate joins in learning activities; their role is more than that of passive recipient of values and belief. But (...) it is a substantive challenge to give a principled account of the trajectory from initiate to full member of a learning community. It requires that we take seriously the question: ‘How can a pupil be engaged in something that they do not yet understand?’. This can be taken as an abstract philosophical question—a ‘How possible’ question closely connected to the paradox of learning—and also as an empirical question about the preferred specifics of a pedagogy for engaging learners. I sketch options for answering the first and review how my preferred option segues into the details of an answer to the latter. (shrink)

When appraising research papers, how much understanding is enough? More specifically, in deciding whether research results can inform practice, do appraisers need to substantively understand how findings are derived or is it sufficient simply to grasp that suitable analytic techniques were chosen and used by researchers? The degree or depth of understanding that research appraisers need to attain before findings can legitimately/sensibly inform practice is underexplored. In this paper it is argued that, where knowledge/justified beliefs derived from research evidence prompt (...) actions that materially affect patient care, appraisers have an epistemic duty to demand high (maximal) rather than low (minimal) levels of understanding regards finding derivation (i.e. appraisers have a duty to seek a superior epistemic situation). If this argument holds assumptions about appraiser competence/ability and the feasibility of current UK conceptions of evidence based practice are destabilized. (shrink)

Scepticism is sometimes expressed about whether there is any interesting problem of other minds. In this paper I set out a version of the conceptual problem of other minds which turns on the way in which mental occurrences are presented to the subject and situate it in relation to debates about our knowledge of other people's mental lives. The result is a distinctive problem in the philosophy of mind concerning our relation to other people.

The problem I address is: how are cogent inferences possible? In § 1 I distinguish three senses in which we say that one is “compelled” by an inference: automatic, seductive-rhetorical and epistemic compulsion. Cogency is epistemic compulsion: a cogent inference compels us to accept its conclusion, if we accept its premises and we aim at truth. In §§ 2–3 I argue that cogency is intelligible if we consider an inference as a compound linguistic act in which several component acts are (...) related to one another by a commitment that the premises support the conclusion. Non-automatic inferences are primarily public acts in an intersubjective context. But cogency arises in special contexts described in § 4, epistemic contexts, where the participants care for truth, i.e. are intellectually virtuous. An inference is cogent in an epistemic context if it stands up to all the objections raised in the context. In § 5 I consider three different kinds of cogent inferences. In § 6 I argue that in all three cases cogency is fallible and propose a fallibilist variety of inferentialism. In § 7 I distinguish context of utterance and contexts of evaluation. Cogency is relative to epistemic contexts of evaluation. However, validity, i.e. stable cogency, is transcontextual. (shrink)

If we read the Tractatus logico-philosophicus according to the decimal numbering of its propositions, we may understand, finally, the section about the self and the limits of language and world. Proposition 5.64 follows 5.63 (not 5.634); 5.634 follows 5.633 (not 5.6331); and so on. Thus, it becomes clear that the picture of the visual field (TLP 5.6331) cannot be what scholars have always quoted and discussed, i.e. a draft of an eye inside its field of sight. Actually, Wittgenstein’s original drafts (...) depict (to criticise it) the ordinary way of representing the visual field. Following him, the field of vision is ‘without limits’; it does not have a form that implies the existence of an eye, as far as the phenomenological experience does not have a form that implies the existence of an ‘I’. As a result, the current reproductions of the 5.6331 image must be rectified, and all references to this similitude should be radically amended. (shrink)

The paper attempts a novel defense of the main claim of Wittgenstein's Private Language Argument, i.e. that 'inner' ostensive definition is impossible. Part 1 traces Wittgenstein's target to the idea that 'ostensive definition' is a mental act, an idea that makes it tempting to think that its objects might just as well be private as public. Part 2 discusses a recent interpretation and defence of Wittgenstein's position due to Stroud and McGinn. On their view, private ostensive definition establishes no pattern (...) of use because it fails to specify the type of inner episode that is being ostended. But not explicitly specifying a type is harmless so long as the ostension in fact brings it about that the subject's usage is sensitive to it. Part 3 proposes a new argument. Private ostensive definition does sustain a pattern of use, but that use is semantically indeterminate: nothing in it (or in the subject's mind) settles which of two alternative schemes of reference applies. The conclusion discusses Wittgenstein's best-known remarks on the subject from the perspective of this new argument. (shrink)

This paper investigates Wittgenstein's "notorious" criticism of Russell's theory of judgment. Instead of advancing a further new interpretation of it, though, I analyze and discuss some of the most promising readings of the Russell/Wittgenstein dispute put forward in the secondary literature; I aim to show that, despite their alleged reciprocal opposition, they cohere with each other because they are, at bottom, different ways of highlighting the same question. I then connect Wittgenstein's criticism of Russell to the account of the nature (...) of the proposition presented in the Tractatus, arguing that the latter can be seen as a natural development of the former. Finally, I make a quick connection between Wittgenstein's criticism of Russell and the conception of the world as the totality of facts, as presented in the Tractatus. (shrink)

Many contributors of the debate about knowledge by testimony concentrate on the problem of justification. In my paper I will stress a different point – the concept of testimony itself. As a starting point I will use the definitional proposal of Jennifer Lackey. She holds that the concept of testimony should be regarded as entailing two aspects – one corresponding to the speaker, the other one to the hearer. I will adopt the assumption that we need to deal with both (...) aspects. Nevertheless, I will show that her concept – which suggests regarding testimony as an act of communication conveying information – is too broad and, therefore, I will end up with a different twofold definition. (shrink)