This paper links the conjecture that the physical world is a virtual reality to the findings of modern physics. What is usually the subject of science fiction is here proposed as a scientific theory open to empirical evaluation. We know from physics how the world behaves, and from computing how information behaves, so whether the physical world arises from ongoing information processing is a question science can evaluate. A prima facie case for the virtual reality conjecture is presented. If a (...) photon is a pixel on a multi-dimensional grid that gives rise to space, the speed of light could reflect its refresh rate. If mass, charge and energy all arise from processing, the many conservation laws of physics could reduce to a single law of dynamic information conservation. If the universe is a virtual reality, then its big bang creation could be simply when the system was booted up. Deriving core physics from information processing could reconcile relativity and quantum theory, with the former how processing creates the space-time operating system and the latter how it creates energy and matter applications. (shrink)

This essay considers why English-speaking scholars have been inclined to engage Indian philosophical materials “philosophically,” as opposed to purely historically. That is to say, they have tended to ask questions about the philosophical significance and even validity of the theories they encounter in Indian philosophical writings, often approaching them critically in the way philosophers assess contemporary philosophical ideas. I first attempt to explain how this phenomenon has come about. Then I attempt to justify the philosophical approach to the study of (...) Indian philosophical texts by showing how it complements, in various ways, the historical-philological study of these materials. (shrink)

Synaesthesia is a condition in which one type of stimulation evokes the sensation of another, as when the hearing of a sound produces photisms, i.e. mental percepts of colours. R is a 20 year old colour blind subject who, in addition to the relatively common grapheme-colour synaesthesia, presents a rarely reported cross modal perception in which a variety of visual stimuli elicit aura-like percepts of colour. In R, photisms seem to be closely related to the affective valence of stimuli and (...) typically bring out a consistent pattern of emotional responses. The present case study suggests that colours might be an intrinsic category of the human brain. We developed an empirical methodology that allowed us to study the subject's otherwise inaccessible phenomenological experience. First, we found that R shows a Stroop effect elicited by photisms despite the fact that he does not show a regular Stroop with real colours. Secondly, by manipulating the colour context we confirmed that colours can alter R's emotional evaluation of the stimuli. Furthermore, we demonstrated that R's auras may actually lead to a partially inverted emotional spectrum where certain stimuli bring out emotional reactions opposite to the normal ones. These findings can only be accounted for by considering R's subjective colour experience or qualia. Therefore the present paper defends the view that qualia are a useful scientific concept that can be approached and studied by experimental methods. (shrink)

Ci imbattiamo in un confine ogni volta che pensiamo a un’entità demarcata rispetto a ciò che la circonda. C’è un confine (una superficie) che delimita l’interno di una sfera dal suo esterno; c’è un confine (una frontiera) che separa il Maryland dalla Pennsylvania. Talvolta la collocazione esatta di un confine non è chiara o è in qualche modo controversa (come quando si cerchi di tracciare i limiti del monte Everest, o il confine del nostro corpo). Talaltra il confine non corrisponde (...) a una discontinuità fisica o a una differenziazione qualitativa (come nel caso dei confini del Wyoming, o della demarcazione tra la metà superiore e la metà inferiore di una sfera omogenea). Ma, che sia netto o confuso, naturale o artificiale, sembra esservi per ogni oggetto un confine che lo separa dal resto del mondo. Anche gli eventi hanno confini, quantomeno confini temporali. Le nostre vite sono delimitate dalle nostre nascite e morti; una partita di calcio comincia alle quindici in punto e termina col fischio finale dell’arbitro alle sedici e quarantacinque. E a volte si dice che anche le entità astratte, come i concetti o gli insiemi, hanno dei propri confini. Se tutto questo parlare di confini abbia davvero un senso, e se rifletta la struttura del mondo o solo l’attività organizzatrice del nostro intelletto, è però oggetto di profonda controversia filosofica. (shrink)

For many centuries, a predominant view of meaning was that the meaning of a word is some kind of chunk of mind-stuff (“idea”) glued to the word and animating it. However, while the traditional view was that we must first understand meaning, which enables us to understand language and hence our linguistic practices, a new approach to semantics that has emerged in the second half of the twentieth century, and which I see as marking the future of meaning, suggests that (...) it is our linguistic practices on which we must concentrate from the beginning. In this paper I suggest a specific understanding of these practices, yielding the conclusion that meanings are reasonably seen as creatures of our activity of setting up certain systems of rules, thus opening up new kinds of virtual spaces which we can “enter”. Meaning is what emerges within the intricately orchestrated space that we have somehow managed to bring into being by means of accepting the rules which are in charge of our language games, especially the game of giving and asking for reasons. (shrink)

This dissertation is on infinite regress arguments in philosophy. Its main goals are to explain what such arguments from many distinct philosophical debates have in common, and to provide guidelines for using and evaluating them. Two theories are reviewed: the Paradox Theory and the Failure Theory. According to the Paradox Theory, infinite regress arguments can be used to refute an existentially or universally quantified statement (e.g. to refute the statement that at least one discussion is settled, or the statement that (...) discussions are settled only if there is an agreed-upon criterion to settle them). According to the Failure Theory, infinite regress arguments can be used to demonstrate that a certain solution fails to solve an existentially or universally quantified problem (e.g. to demonstrate that a certain solution fails to settle all discussions, or that it fails to settle even one discussion). In the literature, the Paradox Theory is fairly well-developed, and this dissertation provides the Failure Theory with the same tools. (shrink)

Most people find it obvious that concepts like APPLE, DOG, WATER, CACTUS, SWIM, CHIRP, FURRY, and SMOOTH are acquired from perceptual experiences along with some kind of inferential procedure. Models of how these concepts are inferentially acquired, however, force the acquired concepts to be representationally complex, built from, and composed by, the more primitive representations. Since at least the time of Plato, philosophers and psychologists have struggled to find complex sets of representations that have the same meanings, definitionally or probabilistically, (...) as these concepts. For example, to think about the property-kind being gold is not the same as to think about the complex property-kind being yellowish & shiny & malleable.... I call this Fodor's Challenge: Find an acquisition process that is genuinely inferential and yields a concept that genuinely is one of these lexical concepts. Rather than continue the pursuit of a complex representation that has the same meaning as our concept GOLD. I offer a model on which many lexical concepts are acquired from perception and inference, without being built up from, and composed by, the representations involved. The model, Baptizing Meanings for Concepts, is inspired in part by Saul Kripke's baptism process for assigning meanings to linguistic terms. Many lexical concepts, according to the BMC, are acquired by inferring the presence a new property-kind, picking out the property-kind in terms of those perceptible features, and then assigning a simple mental term, a concept, for that property-kind. (shrink)

The present article is a critical assessment of the “Connection Principle” – the principle according to which the two key properties of mental states, intentionality and phenomenality , are necessarily co-instantiated. A theory of mind endorsing some version of this principle assumes that all intentional states are either conscious or otherwise potentially conscious. The Connection Principle, being a subject of much controversy in the past 15 years, has divided the community of philosophers of mind in two, as it were, irreconcilable (...) camps. What poses a special challenge to both friends and foes of the Connection Principle – albeit for different reasons – is a plausible explanation of intentional character of unconscious mental states. We want to point to and comment on certain weaknesses of Searle’s attempt to solve this problem – an attempt drawing on the idea that unconsciousmental states “retain” its “aspectual shape” while unconscious. Eventually, we will venture to show why the notion of aspectual shape cannot play the explanatory role assigned to it by Searle, and why a more restrictive and a more consistent criterion for ascribing intentionality to unconscious states is needed. This new criterion should be sensible to our folk-psychological intuition suggesting that there are dispositional states that play an indispensable causal role inour mental economy and, as such, build a genuine subset of all nconscious, i.e., purely neurophysiological states of our mind/brain.U tekstu se želimo kritički osvrnuti na Searleovo “načelovezanosti” – načelo prema kojemu su svojstvo intencionalnosti i svojstvo fenomenalnosti nužno koinstancirana. Svaka teorija uma koja uključuje neku varijantu tog načela polazi od pretpostavke da su sva intencionalna stanja ili svjesna ili potencijalno svjesna. Riječ je o stajalištu koje je polariziralo filozofe uma i u posljednjih petnaestak godina bilo predmetom zanimljivih rasprava. Moglo bi se reći da se prema stavu – bilo eksplicitnom bilo implicitnom – koji neki filozof uma zauzima prema načelu vezanosti može prepoznati opći istraživački program kojemu pripada. I za zagovornike i za protivnike načela vezanosti – doduše iz različitih razloga – osobiti izazov predstavlja objašnjenje intencionalnosti nesvjesnih mentalnih stanja. Cilj nam je ukazati na neke nedostatke Searleova pokušaja da riješi taj problem – pokušaja kojemu u osnovi leži zamisao da nesvjesna mentalna stanja zadržavaju svoju aspektualnost dok su nesvjesna. Konkretno, pokazat ćemo zašto pojam aspektualnosti ne može igrati eksplanatornu ulogu koju mu je Searle namijenio te zašto bi trebalo pronaći neki drugi, restriktivniji i konzistentniji kriterij pripisivanja intencionalnosti potencijalno svjesnim stanjima. Taj bi kriterij, prema našem shvaćanju, trebao biti kompatibilan s pučkopsihološkom intuicijom o postojanju dispozicijskih stanja koja igraju neizostavnu kauzalnu ulogu u našemmentalnom funkcioniranju i koja, kao takva, čine autentičan podskup svih nesvjesnih stanja našeg mozga/uma. (shrink)

When we begin to investigate the persistence of objects through time, we find immediately that the sort of concerns embodied in Leibniz's Law cause philosophers to divide themselves into the two major camps of Purdurantists and Endurantists. What is required according to each for a given object at a given time to be identified with a given object at another time is held to be dramatically different, even while both often look to the same general sort of indicators for their (...) answers to identity questions: identity or similarity of physical properties, including relational properties like spatial location. I believe, however, that logically prior to the problem of the persistence of objects through time will be questions regarding the composition of objects--we must have coherent notions of what an object is, what it means for parts to compose an object, and what is required for an object to be considered to exist at a single time before we can discuss the continued existence of objects at other times. I believe that posing the problem of temporal gaps for both the Perdurantist and Endurantist to solve can help us uncover reasonable answers to these more basic questions, and thereby help us judge the comparative coherence of the parent theories. Towards this goal, we investigate here some of the assumptions of persistence theories--that Perdurantists are four-dimensionalists and Endurantists are Presentists, for example--before moving on to find reasonable explanations of the composition of objects from within each theory. Important at this stage is clarifying such concepts as parthood and the present. When we at length turn our attention to the problem of gaps, it becomes useful to distinguish two sorts of gaps, each with their own difficulties: a 'gap' as a length of time during which the proper parts of an object are scattered through space, and a 'gap' as a length of time during which the proper parts of an object do not exist in space at all. My contention here is that Perdurantism, paired with four-dimensional spacetime, provides the most coherent answers to the challenges presented throughout. (shrink)

In this paper we examine different answers to the question of what we are, focusing in particular on eliminative and reductivist proposals about persons or selves. We conclude that, as of today, dualism seems more reasonable than naturalism, if by naturalism we understand the thesis that psychological entities can be reduced or eliminated.

A review of Gallagher, S. (2005). How the Body Shapes the Mind. Oxford: Oxford University Press.

The most common way of dealing with the fear of death is denying death. Such denial can take two and only two forms: strategy 1 denies the finality of death; strategy 2 denies the reality of the dying subject. Most religions opt for strategy 1, but Buddhism seems to be an example of the 2nd. All variants of strategy 1 fail, however, and a closer look at the main Buddhist argument reveals that Buddhism in fact does not follow strategy 2. (...) Moreover, there is no other theory that does, and neither can there be. This means that there is no tenable theory that denies death. There may be no universally psychologically acceptable alternative, however, which would mean that if denying death is incoherent, this is an unavoidable incoherence. (shrink)