Pawel Grabarczyk

The paper discusses the thesis of virtual realism presented by David Chalmers in his paper “The Virtual and the Real” (2017). Here, I suggest an even stronger version of the claim that I call “virtual physicalism”. According to this view, virtual objects are not only real but physical as they are identical to the physical states of computers that run VR software. I suggest that virtual objects should have a similar ontological status to toys—they should be treated as models or simplifications of ordinary objects. Just like toys, virtual objects can sometimes be good enough to be used instead of their ordinary counterparts. In these cases, virtual objects start to be treated as instantiations of the same kind. In the last part of the paper, I use Johan Huizinga’s notion of a “magic circle” to suggest how different objects could be successfully “virtualized”, that is, moved into a digital realm while remaining objects of the same kind as their non-virtual counterparts. I suggest this will happen once virtual reality becomes permanent and causally connected with non-virtual reality. I finish the paper by looking at examples of natural kind objects and individuals, which seem to be the hardest cases for successful virtualization.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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