Online research in philosophy

Gilbert Harman has written: “Williamson‟s Knowledge and its Limits is the most important philosophical discussion of knowledge in many years. It sets the agenda for epistemology for the next decade and beyond” (Harman 2002, p. 417). Timothy Williamson‟s ground-breaking proposal is that knowing is “merely a state of mind”. In other words, for every proposition p “there is a state of mind being in which is necessary and sufficient for knowing p” (Williamson 2000, p. 21). When first advanced, Williamson‟s view (...) ran contrary to the general trend. The “standard view” (ibidem) was that “believing is merely a state of mind, but.. (shrink)

“Identità” qui si intende nel senso già precisato da Aristotele di “identità numerica”, che si ha “quando i nomi sono parecchi, ma la cosa è una sola” e, non nel senso di “identità specifica”, che si ha invece “quando gli oggetti, pur essendo parecchi, non rivelano differenze quanto alla specie”.1 In questo articolo intendo fornire al lettore indicazioni introduttive (non certo esaustive) sul posto che la nozione di identità numerica occupa nella logica contemporanea e nell’area di riflessione filosofica del Novecento (...) più strettamente legata alla logica, la filosofia analitica. Nella terza parte proporrò qualche spunto per un’indagine originale. (shrink)

This study presents and develops in detail (a new version of) the argumental conception of meaning. The two basic principles of the argumental conception of meaning are: i) To know (implicitly) the sense of a word is to know (implicitly) all the argumentation rules concerning that word; ii) To know the sense of a sentence is to know the syntactic structure of that sentence and to know the senses of the words occurring in it. The sense of a sentence is (...) called immediate argumental role of that sentence. According to the argumental conception of meaning a theory of meaning for a particular language yields a systematic specification of the understanding of every sentence of the language which consists in a specification of the immediate argumental role of the sentence. The immediate argumental role is a particular aspect of the use of a sentence in arguments. But it is not the whole use in arguments, nor is the whole use in arguments reducible to the immediate argumental role. That is why, by accepting the argumental conception of meaning, we can have epistemological holism without linguistic holism. The argumental conception distinguishes between the understanding and the correctness of a language. Such a distinction makes it possible to account for our understanding of paradoxical languages. Redundancy theory of truth, realistic conceptions of truth or epistemic conceptions of truth are all compatible with an argumental conception of sense. But here it is argued that an epistemic conception of truth is preferrable. Acceptance of the argumental conception of meaning and of an epistemic conception of truth leads to a rejection of the idea of analytic truth. The argumental conception is pluralistic with respect to the understandability of different logics, and neutral with respect to their correctness. (shrink)

Chi ha l'abitudine di sfogliare le riviste filosofiche sa che "metafisica" non è più una parola che scotta. I maestri dell'inizio del secolo (gli empiristi logici sono l'esempio più tipico) identificarono la metafisica con il non-senso e usarono la parola come un marchio di infamia. Non mancavano precedenti nella storia della filosofia. Ma oggi gli allievi di quei maestri preferiscono rifarsi ad un uso diverso, meno fazioso, del termine per indicare con esso un'indagine filosofica, che non solo non deve essere (...) trascurata, ma concerne i fondamenti di molte altre ricerche, ed è quindi per molti versi centrale. (shrink)

The compulsion of proofs is an ancient idea, which plays an important role in Plato’s dialogues. The reader perhaps recalls Socrates’ question to the slave boy in the Meno: “If the side of a square A is 2 feet, and the corresponding area is 4, how long is the side of a square whose area is double, i.e. 8?”. The slave answers: “Obviously, Socrates, it will be twice the length” (cf. Me 82-85). A straightforward analogy: if the area is double, (...) the side is double. Nevertheless, the answer is wrong. Socrates wants to lead the slave to the right conclusion. The boy should reach the truth through steps that are all “his own”, performed with full conviction. To this aim, Socrates addresses a series of short pressing questions to the slave boy. Simple questions provoke equally simple replies, though the boy is sometimes puzzled and surprised by the answers he feels compelled to give. In the first part of the exchange the boy is gradually forced to admit that a square B with double side (i.e. side of length 4) has an area which is not double, but four times as big, i. e. 16. In the second part the boy hazards the guess that the square with double area has a side of length 3, since 3 is between 2 and 4. But Socrates easily drives him to acknowledging that if the side is 3, the area of the resulting square C is 9, not 8. The boy can only exclaim: “By Zeus, Socrates, I do not know!”. In the third part, at Socrates’ prompting, the diagonal of the original square A is drawn within the second fourfold square B. Responding to Socrates’ questions, the boy is led to conclude that the square D whose side is the diagonal of A is precisely the required square: its area is 8. (shrink)

Professor Von Wright is a prominent analytical philosopher who has written about the very notion of analytical philosophy. Other analytical philosophers are present here and they have their ideas on this notion. As for me, I believe that it is not at all an obvious notion. Sometimes it seemed to me that analytical philosophy does not exist, or at least that there is no single common feature shared by all so-called analytical philosophers and only by them, though there are many (...) family resemblances. Therefore I thought I might take the opportunity of this meeting in honour of Professor Von Wright and propose as one of our themes for discussion, precisely the question: “what is analytical philosophy?”. The natural start is Professor Von Wright’s description of analytical philosophy. (shrink)

What is the role of a notion of truth in our form of life? What is it to possess a notion of truth? How different would we be, if we did not possess a notion of truth? Gulliver’s description of three peoples encountered during his fifth travel will help me to answer. One might say that the basic anti-realist tenet is that we should explain the notion of truth by connecting it with our practice of assertion. In this sense the (...) outcome of my commentary of the fifth part of Gulliver’s Travels will amount to a non-reductive anti-realist conception of truth. It can be called a dialectical conception of truth because it focuses on a particular way of resolving disagreements: an epistemically virtuous practice of verbal exchange that cares for truth. The main thesis is that an implicit awareness of the epistemically virtuous practice is a necessary condition for being in full possession of the notion of truth. The commentary will also involve an argument against deflationism and a critique of some claims made by Huw Price. (shrink)

Can an epistemic conception of truth and an endorsement of the excluded middle (together with other principles of classical logic abandoned by the intuitionists) cohabit in a plausible philosophical view? In PART I I describe the general problem concerning the relation between the epistemic conception of truth and the principle of excluded middle. In PART II I give a historical overview of different attitudes regarding the problem. In PART III I sketch a possible holistic solution.

Alberto Coffa used the phrase "the Copernican turn in semantics" to denote a revolutionary transformation of philosophical views about the connection between the meanings of words and the acceptability of sentences and arguments containing those words. According to the new conception resulting from the Copernican turn, here called "the Copernican view", rules of use are constitutive of the meanings of words. This view has been linked with two doctrines: (A) the instances of meaning-constitutive rules are analytically and a priori true (...) or valid; (B) to grasp a meaning is to accept its rules. The pros and cons of different versions of the Copernican view, ascribable to Wittgenstein, Carnap, Gentzen, Dummett, Prawitz, Boghossian and other authors, will be weighed. A new version will be proposed, which implies neither (A) nor (B). (shrink)

Ideas on meaning, rules and mathematical proofs abound in Wittgenstein’s writings. The undeniable fact that they are present together, sometimes intertwined in the same passage of Philosophical Investigations or Remarks on the Foundations of Mathematics, does not show, however, that the connection between these ideas is necessary or inextricable. The possibility remains, and ought to be checked, that they can be plausibly and consistently separated. I am going to examine two views detectable in Wittgenstein’s works: one about proofs, the other (...) about meaning and rules. The first is the denial of the objectivity of proof. The second is a conception of meaning stemming from the rule-following considerations. I shall argue that, though Wittgenstein seems to conjoin the two views, they can be, and should be, separated1. (shrink)

There are various proposals for a general characterization of holism1. In this paper I propose the following: a variety of holism is the view that every X of an appropriate kind, which is part of a relevant whole W, cannot be legitimately separated or taken in isolation from W. Then, I distinguish two general kinds of holism, depending on two different reasons which can debar us from taking X in isolation from W. One reason can be that separating X from (...) W always amounts to transforming X into something else. Correspondingly, a strong holism is the view that if the whole W is modified anywhere, X ceases to be X and becomes something else. Another reason why it may be illegitimate to consider X in isolation from W can be that if we separate X from W, nothing that we know entitles us to exclude that X might be transformed into something else. Correspondingly, virtual holism is the view that if the whole W is modified anywhere, we can never rule out that X ceases to be X and becomes something else. (shrink)

The intuitionistic conception of truth defended by Dummett, Martin Löf and Prawitz, according to which the notion of proof is conceptually prior1 to the notion of truth, is a particular version of the epistemic conception of truth. The paradox of knowability (first published by Frederic Fitch in 1963) has been described by many authors2 as an argument which threatens the epistemic, and the intuitionistic, conception of truth. In order to establish whether this is really so, one has to understand what (...) the epistemic conception of truth really is. So I shall start inpart I with a description of the matter at issue between theepistemic conception of truth and the opposite position, therealistic conception of truth. Inpart II I shall very briefly describe the paradox. Inpart III I shall try to answer the question which appears in the title of this paper: What can we learn from the paradox of knowability?. My conclusion will be that the paradox of knowability is not a refutation of the epistemic conception of truth, but helps us to better formulate (and understand) such a view. (shrink)