Alfredo Tomasetta

Timothy Williamson supports the thesis that every possible entity necessarily exists and so he needs to explain how a possible son of Wittgenstein’s, for example, exists in our world:he exists as a merely possible object, a pure locus of potential. Williamson presents a short argument for the existence of MPOs: how many knives can be made by fitting together two blades and two handles? Four: at the most two are concrete objects, the others being merely possible knives and merely possible objects. This paper defends the idea that one can avoid reference and ontological commitment to MPOs. My proposal is that MPOs can be dispensed with by using the notion of rules of knife-making. I first present a solution according to which we count lists of instructions - selected by the rules - describing physical combinations between components. This account, however, has its own difficulties and I eventually suggest that one can find a way out by admitting possible worlds, entities which are more commonly accepted - at least by philosophers - than MPOs. I maintain that, in answering Williamson’s questions, we count classes of physically possible worlds in which the same instance of a general rule is applied.

Some philosophers and cognitive scientists think that a naturalised philosophy of the (self-) conscious mind should lead us to reject the very existence of the self. The paper focuses on two case-studies which are representative of this kind of attitude. In particular we examine, and criticise, Thomas Metzinger's 'no-self alternative' and Daniel Dennett's narrative elimination of the self. Our aim is not to prove that any elimination of the self from the inventory of the world based on the empirical study of the mind is doomed to failure. Instead, we would like to introduce a note of caution: it is far from clear that cognitive science and naturalistic philosophies of mind force upon us, or even suggest, a picture of the world without persons and selves.

: Current philosophical and scientific approaches to consciousness are very often characterised by a strong background presupposition: whatever the precise details of a theory of consciousness may be, a physicalist – or materialist – view of consciousness itself must be correct. I believe, however, that this conviction, pervasive though it may be, is not really justified. In particular, I think that the arguments offered in favour of the materialist presupposition are weak and unconvincing, and that there is a very strong prima facie case for rejecting physicalism regarding phenomenal consciousness. In a previous article of mine I have already discussed the first point; the present paper is devoted to elaborating the second, presenting a common-sense-based argument against physicalism. Keywords: Consciousness; Physicalism; Knowledge; Nature/Essence; Common Sense Conoscere per Esperienza. O del perché il fisicalismo non dovrebbe essere la nostra posizione di default nello studio della coscienza Riassunto: Gli attuali approcci filosofici e scientifici alla coscienza sono molto spesso caratterizzati da una forte presupposizione di sfondo: qualunque siano i dettagli precisi di una teoria della coscienza, una visione fisicalista – o materialista – della coscienza stessa deve essere corretta. Credo tuttavia che questa convinzione, per quanto pervasiva, non sia davvero giustificata. In particolare penso che gli argomenti offerti a favore della presupposizione materialista siano deboli e non convincenti e che ci sia un argomento prima facie molto forte per respingere il fisicalismo circa la coscienza fenomenica. Ho già discusso il primo punto in un articolo precedente; il presente articolo è dedicato a sviluppare il secondo punto, presentando un argomento contro il fisicalismo basato sul senso comune. Parole chiave: Coscienza; Fisicalismo; Conoscenza; Natura/Essenza; Senso comune

Whoever has even a superficial familiarity with recent, and not so recent, philosophical debates knows that in the last few decades philosophy of mind has been dominated by physicalist naturalism, and that philosophers of mind who are willing to seriously consider the possibility that materialism might be false are still quite rare. This being the situation, it is somewhat surprising that in the philosophical literature the pro-materialist conviction often seems to float free of the defence of any specific argument in its favour. Yet, some arguments for physicalism have actually been put forward, and in this paper I examine three: the argument from the success of science, the argument from methodological naturalism, and the argument from the causal closure of the physical. They may not exhaust all that has been said to uphold physicalism in the metaphysics of mind, but they do offer, I think, a fair survey of the sorts of reasons that are given in this kind of discussion. If I am right on this point, and if I am right that the arguments I consider are weak and unconvincing, then the most popular form of naturalism concerning the mind cannot be viewed as being well backed up, contrary to what many of its supporters usually think.

This paper focuses on the role and value of thought experiments concerning phenomenal consciousness. It is divided in two parts. The first part surveys the philosophical and scientific context in which many well-known thought experiments concerning the mind and consciousness have their roots. In particular it focuses on the problems left open by scientific theories about consciousness and by many attempts to reduce the mind to the physical world. The second part is a case study: it concentrates on the analysis of the zombie thought experiment aiming to show how a simple and rather naive image, the zombie intuition, has originated stimulating and complex arguments, enriching our philosophical and intellectual landscape. On the whole, the paper highlights the fact that there are properly philosophical questions about the mind, philosophy not being a sort of junior partner in the collective enterprise of cognitive science.

According to Williamson’s epistemology of modality, we know metaphysical necessities by means of our knowledge of some specific counterfactualconditionals. In particular, Williamson’s idea is that we come to have knowledge of metaphysical necessities—which have the form □A—via our knowledge ofcounterfactual conditionals which have the form ~A□→┴. In this paper I claim that there are two different ways in which Williamson’s position can plausibly bearticulated, and that both ways lead to circularity.

This commentary focuses on three aspects of Sandro Nannini’s paper Time and Consciusness in Cognitive Naturalism: the parallel between Einstein’s theory of relativity and the new science of the mind/brain; the Cartesian characterization of non-reductionist positions in the philosophy of mind; the alleged illusory status of consciousness, free will and the Self. We suggest, first, that Nannini overstates the success of cognitive neuroscience; second, that non-reductionism is not necessarily a Cartesian position; and third, that the neurocognitive science data do not show or even suggest, that consciousness, free will and the Self are illusory phenomena.