Recent developments in virtual reality technology raise a question about the experience of presence and immersion in virtual environments. What is immersion and what are the conditions for inducing the experience of virtual presence? In this paper, we argue that crucial determinants of presence are perception of affordances and sense of embodiment. In the first section of this paper, we define key concepts and introduce important distinctions such as immersion and presence. In the second and third sections, we respectively discuss (...) presence, immersion and their determinants in detail. In the fourth and fifth sections, we argue for the importance of perception of affordances and sense of embodiment in increasing the degree of presence. Finally, we show the consequences of our view and discuss possible future implications. (shrink)

Celem artykułu jest wprowadzenie do omówienia strategii cenzorskich stosowanych wobec utworów Włodzimierza Scisłowskiego złożonych do publikacji w piśmie satyrycznym „Kaktus” w latach 1957–1960. Materiał źródłowy stanowi zbiór kryptotekstów, czyli poufnych dokumentów oceniających artykuły z tygodnika, powstały w Wojewódzkim Urzędzie Kontroli Prasy, Publikacji i Widowisk w Poznaniu. Cenzorzy ingerowali w utwory satyryczne Scisłowskiego – we fraszki, wiersze, poematy, ballady, zarzucając autorowi złośliwe i przejaskrawione przedstawianie rzeczywistości politycznej i społecznej kraju. Część utworów ukazała się po wprowadzeniu narzuconych przez urząd cenzury zmian, część (...) nie została dopuszczona do publikacji. (shrink)

Celem artykułu jest omówienie strategii cenzorskich stosowanych wobec utworów Włodzimierza Scisłowskiego złożonych do publikacji w piśmie satyrycznym „Kaktus” w latach 1957–1960. Materiał źródłowy stanowi zbiór kryptotekstów, czyli poufnych dokumentów oceniających artykuły z tygodnika, powstały w Wojewódzkim Urzędzie Kontroli Prasy, Publikacji i Widowisk w Poznaniu. Cenzorzy ingerowali w utwory satyryczne Scisłowskiego – we fraszki, wiersze, poematy, ballady, zarzucając autorowi złośliwe i przejaskrawione przedstawianie rzeczywistości politycznej i społecznej kraju. Część utworów ukazała się po wprowadzeniu narzuconych przez urząd cenzury zmian, część nie została (...) dopuszczona do publikacji. (shrink)

This book presents a new approach to semantics based on Kazimierz Ajdukiewicz’s Directival Theory of Meaning, which in effect reduces semantics of the analysed language to the combination of its syntax and pragmatics. The author argues that the DTM was forgotten because for many years philosophers didn’t have conceptual tools to appreciate its innovative nature, and that the theory was far ahead of its time. The book shows how a redesigned and modernised version of the DTM can deliver a new (...) solution to the problem of defining linguistic meaning and that the theory can be understood as a new type of functional role semantics. The defining feature of the DTM is that it presents meaning as a product of constraints on the usage of words. According to the DTM meaning is not use, but the avoidance of misuse. Readers will see how the DTM was shelved for reasons that we don’t find so dramatic anymore, and how it contains enough original ideas and solutions to warrant developing it into a full-blown contemporary account. It is shown how many of the underlying ideas of the theory have been embraced later by philosophers and treated simply as brute facts about natural languages or even as new philosophical discoveries. Philosophers of language and researchers with an interest in how languages and the mind work will find this book a fascinating read. (shrink)

The first aim of this paper is to remind the reader of a very original theory of meaning which in many aspects has not been surpassed by subsequent theories. The theory in question is Kazimierz Ajdukiewicz’s Directival Theory of Meaning. In the first section I present a version of this theory which, I trust, retains the gist of the original but loses its outdated language. In the second section I analyze some problematic consequences of the directival theory and show how (...) they can be addressed. The second aim of this paper is exploiting some of the similarities between the directival theory and later theories of meaning. In the third section I argue that using the directival theory as an interpretative tool enables us to create explications of some of the notoriously vague notions which contemporary theories of meaning employ. (shrink)

In this paper we argue that inferentialist approach to meaning does not, by itself, show that meaning is normative in a prescriptive sense, and that the constitutive rules argument is especially troubling for this position. To show that, we present the proto-inferentialist theory developed by Ajdukiewicz and claim that despite the differences between his theory and contemporary inferentialism rules of language in both theories function more like classificatory devices than prescriptions. Inferentialists can respond by claiming that in their theory meaning (...) is essentially social and hence normative, but we claim that then semantic normativity becomes derivative of social normativity. (shrink)

In Remarks on the philosophy of psychology Wittgenstein uses ambiguous illusions to investigate the problematic relation of perception and interpretation. I use this problem as a starting point for developing a conceptual framework capable of expressing problems associated with visual perception in a precise manner. I do this by discerning between subjective and objective meaning of the term “to see” and by specifying the beliefs which are to be ascribed to the observer when we assert that she sees a given (...) object. The framework (detailed in section 2) is then used to analyze the case of the duck/rabbit illusion. It shows that ambiguous illusions present us with a specific skeptical challenge but that the challenge can be overcome by empirical sciences. Along the way I explicate some of the common notions associated with perception (“to look at”, “to have an impression of…”, "to react as if one had an impression of..”, “to convince oneself that what one sees is…”). (shrink)

By looking at videogame production through a two-vector model of design – a practice determined by the interplay between economic and technological evolution – we argue that shared screen play, as both collaboration and competition, originally functioned as a desirable pattern in videogame design, but has since become problematic due to industry transformations. This is introduced as an example of what we call design vestigiality: momentary loss of a design pattern’s contextual function due to techno-economical evolution.

The paper traces how disappointment with the notion of linguistic meaning has led to a shift towards the new, technical term of “narrow content”. In the first part of the paper I analyze the ways “narrow content” is understood in the literature. I show two important distinctions which have to be applied to the term in order to avoid confusion – the difference between context and functional theories of narrow content, and the difference between mental and linguistic narrow content. I (...) argue that the most controversial combination of both distinctions is the idea of functional linguistic narrow content. In the second part of the paper I show that, contrary to the initial impression, this controversial, cut back notion of narrow content sheds some much needed light on several key semantic phenomena which we might otherwise be unable to explain – and because of this can be seen as a rightful descendant of the notion of meaning. (shrink)

Celem artykułu jest wyróżnienie dwóch, funkcjonujących w języku potocznym sensów wyrażenia „widzieć” – obiektywnego i subiektywnego bez jednoczesnego przypisywania obserwatorom przekonań. Celem jest zatem ekstensjonalna eksplikacja. Pozwala to na opisywanie percepcji wzrokowej bez przesądzania o wyższych zdolnościach kognitywnych podmiotu percepcji. Wprowadzenie przekonań obserwatora pozwala następnie na wyrażenie większej ilości rozróżnień występujących w literaturze poświęconej filozoficznym zagadnieniom percepcji zmysłowej.

The titular "Bandie" is a fictional creature devised by Tadeusz Skalski in his "Fairy Tales of Functionalism" (published in "Folia Philosophica" 24). It is supposed to be a reduction ad absurdum for the thesis of organizational invariance. I show that the argument works only because the though experiment Skalski uses is highly suggestive and that, contrary to Skalski's intentions, The Bandie is in fact quite a complex dynamic system.

The paper analyses selected philosophical aspects of Stanisław Lem’s Solaris. I argue that there is an interesting similarity between the history of “Solarist studies” –the fictional scientific discipline depicted by Lem and cognitive science. I show that both disciplines go through similar stages as they try to describe their main subject. In the further part of the paper, I focus on two problems identified in cognitive science that can be directly related to the themes found in Solaris: the problem of (...) the detection of intelligence and the problem of the notion of mental representations. I finish the paper by looking at the mysterious guests that stalk the main protagonists and show that they can be understood as heuristic models that are taken into account in the theories of mind uploading. (shrink)

The idea that concepts play a significant role in some perceptions is widespread but everybody seems to differ as to where to draw the line. Some researchers say that the difference between direct and indirect, concept driven acts of perception manifests itself whenever we perceive abstract or general properties. Others point at second order properties or causal properties. I call this inability to precisely differentiate between acts of direct and indirect perception “The Division Problem”. Furthermore there is always a question (...) as to how widespread indirect perceptions are. Can we attribute them to prelingual cognitive systems? I call this second problem “The Distribution Problem”. -/- The main aim of the paper is providing a solution to both problems by proposing a naturalistic explication of the notion of “concept”. -/- I propose to identify the role concepts were supposed to play in perception with a mechanism of “soft detection”. Unlike hard detectors which react to a specific target in virtue of their constitution and placement in the system, soft detectors are understood as dynamic categorization devices enabling the cognitive system to selectively react to an undetectable property via flexible exploitation of data from hard detectors. -/- I conclude by showing how the notion of soft detection retains some of the aspects traditionally attributed to concepts and how does it differ from similar accounts known from contemporary literature. (shrink)

In the paper I present an application of Jerzy Pelc’s functional semiotics to contemporary cognitive science. I argue that, even though the original theory addressed only linguistic representations, it can be fruitfully applied to mental representations. I show how Pelc’s distinction between use and usage helps us clarify the notion of mental representations and how it makes it immune to skeptical challenges presented in contemporary cognitive science literature.

The paper is devoted to controversies in computer games studies connected with game classification and characteristics. Controversies on walking simulators are discussed in depth; also historical roots of these games and their ergodicity.

The paper aims to add contextual dependence to the new directival theory of meaning, a functional role semantics based on Kazimierz Ajdukiewicz’s directival theory of meaning. We show that the original formulation of the theory does not have a straight answer on how the meaning of indexicals and demonstratives is established. We illustrate it in the example of some problematic axiomatic and inferential directives containing indexicals. We show that the main reason why developing the new directival theory of meaning in (...) this direction is difficult is that the theory focuses on the notion of a sentence (and not the notion of an utterance). To add the latter notion to the theory, we introduce the idea of admissible contextual distribution being an interpretation of the hybrid expression view on indexicals and demonstratives. We argue that this idea introduces a small but important modification to the concept of language matrix and gives way to define two distinct concepts of meaning: for an expression type and for a use of an expression type. (shrink)

Thought experiments are often employed by philosophers who try to differentiate between essential and accidental properties. These experiments are said to stimulate the intuition of the reader (be it eidetic, linguistic or any other type of intuition). But sometimes they rather persuade the reader than test his intuition. How can we test the readers without revealing to them the role of test subjects they play? I suggest that some works of fiction can be treated as massive thought experiments because they (...) are very similar to the stories philosophers use. The trouble is, that in the case of fiction our intuition is much more liberal and we accept things we would have certainly called impossible had they been presented to us in a philosophical article. I use some examples to show that our notion of impossibility depends on our naive, commonsense preconceptions of what objects and technologies exist in the world we are talking about. But this is exactly the type of knowledge philosophers ask us to suspend when they present their thought experiments. (shrink)

The aim of the paper is to distinguish two common notions of the expression “to see” – objective and subjective without attributing beliefs to the observer. Thus, the main aim can be characterized as extensional explication. This gives us the ability to describe visual perception without assuming anything about higher cognitive abilities of the agent. Subsequent addition of the notion of belief enables me to characterize more visual categories present in the literature of the subject.

In this article I am trying to compare the methods of phenomenology and analytic philosophy. Such a general comparison is of course impossible in a small article. In order to make it possible I am comparing selected authors. Phenomenology is thus represented by Husserl and Ingarden, analytic philosophy by Putnam and Kripke (they are chosen because of their realism and essentialism). I am trying to analyze the way the authors describe their methods. First I am analyzing analytic philosophy from the (...) phenomeneological point of view, then phenomenology from the point of view of analytic philosopher. I'm. pointing out that Kripke and Putnam often say about intuition, and that they do not understand it as any kind of linguistic intuition. Then I'm. pointing out that phenomenologists often refer to the way w describe things, although they are convinced that their experience is always prior to any linguistic form. I am suggesting that even if we agree that the practice of both schools is similar, and that the description of methods could be translated, there is no chance of a real agreement between phenomenology and analytic philosophy. My thesis is that neither the practice nor the description of the way we obtain our philosophical goals is important. What really is important is all the philosophical background (ontology, philosophical assumptions and the like). In this particular situation considered in my article, the most important factor is the answer for the following question: Can we think without the language? Phenomenologist can not answer 'no' to this question. If he did he would admit that his philosophy isn't free of assumptions. Analytic philosopher can not answer 'yes' to this question. If he did he would admit that he is interested only in some kind of 'package for thought'. The answer itself depends on some kind of philosophical faith. Thus, the answer for the main question of my article depends only on Kripke's will of changing his declaration of faith. (shrink)

Our life in this broken world requires tools to own and express our grief in ways that are connected to our faith in God. We find that the biblical genre of lament is appropriate to the task. However, we do not come to lament without baggage, and we sometimes require additional help in the form of symbolic capital borrowed from stories and songs. In this case, The Chronicles of Narnia provide such capital. As we reflect on these stories, we can (...) see lament in a new way that helps us bring our pain to God. As we engage in the discipline of lament, we are spiritually formed into the image of Jesus. (shrink)

This volume addresses foundational issues of context-dependence and indexicality, which are at the center of the current debate within the philosophy of language. Topics include the scope of context-dependency, the nature of content and the character of input data of cognitive processes relevant for the interpretation of utterances. There's also coverage of the role of beliefs and intentions as contextual factors, as well as the validity of arguments in context-sensitive languages. The contributions consider foundational issues regarding context-sensitivity from three different, (...) yet related, perspectives on the phenomenon of context-dependence: representational, structural, and functional. The contributors not only address the representational, structural and/or functional problems separately but also study their mutual connections, thus furthering the debate and bringing competing approaches closer to unification and consensus. This text appeals to students and researchers within the field. This is a very useful collection of essays devoted to the roles of context in the study of language. Its essays provide a useful overview of the current debates on this topic, and they put forth novel contributions that will undoubtedly be of relevance for the development of all areas in philosophy and linguistics interested in the notion of context. Stefano Predelli Department of Philosophy, University of Nottingham, Nottingham, UK. (shrink)

For a fixed q  ℕ and a given Σ1 definition φ(d,x), where d is a parameter, we construct a model M of 1 Δ0 + ¬ exp and a non standard d  M such that in M either φ has no witness smaller than d or phgr; is equivalent to a formula ϕ(d,x) having no more than q alternations of blocks of quantifiers.

The phenomenon of context dependence is so multifaceted that it is tempting to classify it as hetergenous. It is especially evident in the case of the difference between context dependence as understood in the philosophy of language and context dependence as understood in the philosophy of mind. One of the aims of the present volume is to show that as varied as the phenomenon of context dependence is, the similarities between its different manifestations are profound and undeniable. More importantly, as (...) evidenced in a number of papers presented on the subsequent pages of this volume, a broad perspective on the phenomenon of context dependence helps us to re-apply theories devised for one of the subfields of philosophy to the other subfields. Since the connections and analogies between many uses of contextualism may not be initially obvious, keeping an open perspective and the willingness to learn from the work of others may sometimes be crucial for finding new, satisfactory solutions. (shrink)