This paper is the first part of an exploration into the logical properties of relative identity. After providing the semantic grounds for various monadic logics of relative identity, I define the minimal system and its nine extensions. It is suggested that despite their purely formal origin at least some of them may contain nontrivial philosophical insights. All logics are axiomatized by means of sound and complete sequent calculi. I show their affinities with existing formalizations.

Humans are always interested in distinguishing natural and artificial entities although there is no sharp demarcation between the two categories. Surprisingly, things do not improve when the second type of entities is restricted to the arguably more constrained realm of physical technical artifacts. This paper helps to clarify the relationship between natural entities and technical artifacts by developing a conceptual landscape within which to analyze these notions. The framework is developed by studying three definitions of technical artifact which arise from (...) different perspectives. All these perspectives share two intuitions: that technical artifacts are physical objects that exist by human intervention; and that technical artifacts are entities to be contrasted to natural entities. Yet the perspectives are different in the way they spell out these intuitions: the relevant human intervention may range from intentional selection to intentional production; and the contrast between technical artifacts and natural entities may be introduced by a constitution relation or by defining properties that set technical artifacts apart. The three perspectives are compared and their similarities and dissimilarities are explored with the help of ontological analysis. (shrink)

This note discusses P. Oppenheimer and E. Zalta's ?A Computationally-Discovered Simplification of the Ontological Argument? [this journal, 2011]. I try to explain why the simplification presented there was successful and comment on the technical aspects of the method they applied.

Within the context of the debate between ontological monists and pluralists the paper discusses a number of argumentative strategies that the latter can apply to answer the “there can be only one” argument. I show here that the reply to this argument suggested by J. Turner has its disadvantages and suggest a number of adjustments thereof. In particular, I develop a concept of domain-specific quantifiers that allow the pluralist to elaborate his or her ontological position.

The paper discusses the problem of diachronic criteria of identity for historic localities. We argue that such criteria are needed not just for the sake of ontological clarity but also are indispensable for database management and maintenance. Our survey of the current research in database management and engineering ontology literature found no satisfactory candidates thereof. Therefore we attempt to search for such criteria in the historic-geographical scholarship by exposing the ontological assumptions the researchers made there and by stating them explicitly. (...) This attempt consisted of us presenting a number of brief scenarios taken from the historical studies whereby localities are claimed to maintain their identity through certain types of change or to be destroyed due to other types of change. Generalising these cases we provide a tentative formulation of the criterion and discuss its limitations. (shrink)

The paper suggests two revisions of K. Bennett's system of slot mereology. The revisions do not touch on the philosophical rationale for this system, but are focused on certain logical deficiencies in her formalisation.

I develop in this paper a conception of artefacts based on L. Wittgenstein’s idea of family resemblance. My approach peruses the notion of frame, which was invented in cognitive psychology as an operationisable extension of this philosophical idea. Following the metaphor of life-cycle I show how this schematic notion of frame may be filled with the content relevant for artefacts if we consider them from the point of view of their histories. The resulting conception of artefacts provides a new insight (...) into the current debate on artefact categorisation. (shrink)

The paper contains a first order formal theory pertaining to artefact designs, designs which are construed as the results of designing activities. The theory is based on a minimal ontology of states of affairs and it is inspired by the ideas of the Polish philosopher Roman Ingarden. After differentiating the philosophical notion of design from the engineering notion of design specifications, I then go on to argue that the philosophical category of artefact designs may be compared with Ingarden’s category of (...) intentional states of affairs. At least some artefacts are found to be determined by more than one design. I also show how this ontological framework allows for the distinction between artefact tokens and artefact types. That leads to a proposal on how to define a criterion of identity for artefact types. The proposed theory serves as a basis both for a better understanding of what artefacts are and for the construction of computer-readable models of design specifications. (shrink)

The paper contains a first order formal theory pertaining to artefact designs, designs which are construed as the results of designing activities. The theory is based on a minimal ontology of states of affairs and it is inspired by the ideas of the Polish philosopher Roman Ingarden. After differentiating the philosophical notion of design from the engineering notion of design specifications, I then go on to argue that the philosophical category of artefact designs may be compared with Ingarden’s category of (...) intentional states of affairs. At least some artefacts are found to be determined by more than one design. I also show how this ontological framework allows for the distinction between artefact tokens and artefact types. That leads to a proposal on how to define a criterion of identity for artefact types. The proposed theory serves as a basis both for a better understanding of what artefacts are and for the construction of computer-readable models of design specifications. (shrink)

This paper contains a formal theory of functional parthood. Since the relation of functional parthood is defined here by means of the notion of design, the theory of functional parthood turns out to be a theory of design. The formal theory of design I defend here is a result of introducing a number of constraints that are to express the rational aspects of designing practice. The ontological background for the theory is provided by a conception of states of affairs. The (...) theory is accompanied with a formal model. I prove that the theory is sound and complete with respect to this model. (shrink)

The paper presents a logical framework formalising the main insights of the psychological theory of concepts developed by Lawrence Barsalou. The framework is established within the context of Common Logic as a logical theory in the axiomatic manner. Its semantic characterisation is provided and shown to be sound and incomplete with respect to the class of its models.

Are identity criteria grounding principles? The recent debate over this issue seems to indicate a definitively negative answer. Recognising various objections to identity criteria as grounds for identity facts, one may wonder whether the former are capable of playing any salient role in ontology. I argue in this paper that they are, provided that one interprets them not as ontological explanations of identity facts but as ontological specifications thereof. I attempt to elaborate this view in terms of the well-establish distinction (...) between determinables and their determinates, where identity criteria are to play the role of the determinates and the relation of identity is to be their determinable. (shrink)

The paper relates the basic ontological categories defined by Roman Ingarden to an engineering model of function known by the name of Functional Basis. The intended aim of this exercise in applied philosophy is to make this model more consistent and outline some possible extensions thereof.

In this paper we are focused on the relation between an Ontology (with the capital "O") qua philosophical discipline and an ontology (with the lowercase "o") qua branch of Computer Science. In our view "Ontology" refers to all philosophical groups or schools which take some position on the reality. The meaning of 'ontology' in the second case is not that easy to grasp because of the variety of artefacts which are called 'ontologies' and many activities - aiming at creating the (...) ontologies - called ontological engineering . In general we could state that an ontology is something what is called "ontology" beyond Philosophy, mostly in the Knowledge Management, Artificial Intelligence, Conceptual Modelling or Ontological Engineering and what refers to an engineering artefact describing certain aspect of reality. So understood ontology is always tied to certain language (preferably a logical one) or more precisely to the set of the sentences of this language. It is said that these sentences constitute an ontology and specify the intended meaning of the terms used in these sentences. The ontologists usually focus on describing their conceptualization of the relevant for them aspects of reality. In their ontologies only these properties of reality are taken into account, which are considered as important for the sake of the application. In this sense ontological engineering may ignore Ontologically essential properties, i.e. the ones important from the purely philosophical perspective. The simplest ontologies are catalogues - the list of terms or numbers denoting certain object, glossaries - containing additionally the definitions of the terms, thesauri - the glossaries in which the hierarchy of the terms appear and taxonomies - in which the primitives are hierarchically structured in order to enabling the properties' inheritance. The most sophisticated ontologies are called formal ontologies and they are logical theories fully axiomatized. Ontologies are also divided on the top-level ontologies concerning very general and mostly abstract entities (e.g. property, agent, time) and the domain ontologies dealing with some small domains (e.g. car's parts). For a better understanding of the wide variety of ontologies we give an example of three ontologies: WordNet (thesaurus-like ontology), Cyc (top-level, formal ontology) and Enterprise Ontology (domain ontology). The Ontology plays an important role in ontological engineering. We notice that the ontological engineers more and more often rely on the philosophical literature looking for the solutions of the ontological problems. It is especially visible in the top-ontologies where many Ontological distinctions have been directly adopted. On the other hand we must sadly stress that philosophers seem to be not interested in the ontological engineering at all. We'd like to introduce ontology to t. (shrink)

Formal Ontology in Information Systems is the flagship conference of the International Association for Ontology and its Applications. Its interdisciplinary research focus lies at the intersection of philosophical ontology, linguistics, logic, cognitive science, and computer science, as well as in the applications of ontological analysis to conceptual modeling, knowledge engineering, knowledge management, information-systems development, library and information science, scientific research, and semantic technologies in general.As in previous years, FOIS 2014 was a nexus of interdisciplinary research and communication. The current proceedings (...) is divided into four main sections, dealing with: foundations; processes, agency and dispositions; methods and tools; and applications. The last of these covers a broad spectrum of areas, including in particular biology and medicine, engineering, and economy. For the first time in its history, the conference hosted a special track: an ontology competition, the aim of which was to encourage authors to make their ontologies publicly available and to allow them to be evaluated according to a set of predetermined criteria. Papers discussing these ontologies can also be found in this volume.The book will be of interest to all those whose work involves the application of ontologies, and who are looking for a current overview of developments in formal ontology. (shrink)

The paper is a comment on the formalization of the antinomy of futura contigentia in the form of a (inconsistent) theory formulated by Marcin Tkaczyk in the language of classical predicate calculus. I argue that some features of the formalization in question are controversial from the viewpoint of formal semantics and ontology, and suggest two ways of removing some of those controversies.

These considerations seek to show whether it is possible to build a formal theory of the state of affairs, which would be sufficiently well founded in philosophy. Our analysis focuses on a case study in the form of the ontology of the state of affairs proposed by Roman Ingarden. The principal part of this analysis is devoted to Ingarden’s exposition. As its result, the author formulates a list of conditions that should be fulfilled by a formal theory, so that it (...) could aspire to be called “Ingarden’s ontology of the state of affairs.”. (shrink)

The paper contains an attempt at formulating the project of logic comprised in Jan Łukasiewicz's article „On determinism” and a construction of a logic which would realise this project. Such a logic consists of three consequence-operations build upon a four-element algebra. The values of the algebra have been defined by means of the following set of sentences: true and true today, true but not true today, false but not false today and false and false today. It turns out that only (...) one of the consequences is different from the classical consequence and all of them are logically two-valued. It is proved moreover, that the assumption that tautologies consists of sentences-forms which are „always” true today, results in the non-existence of such tautologies. (shrink)

In this paper I discuss the arguments against the existence of artefacts, which were propounded by Mariusz Grygianiec in his book Identyczność i trwanie. I show that all of these arguments are inconclusive or are in the need of further elaboration. Therefore, I conclude that the the metaphysical thesis to the effect that artefacts do not exist remains unsupported.

We investigate a speci c model of knowledge and beliefs and their dynamics. The model is inspired by public announcement logic and the approach to puzzles concerning knowledge using that logic. In the model epistemic considerations are based on ontology. The main notion that constitutes a bridge between these two disciplines is the notion of epistemic capacities. Within the model we study scenarios in which agents can receive false announcements and can have incomplete or improper views about other agent's epistemic (...) capacities. Moreover, we try to express the description of problem speci cation using the tools from applied ontology { RDF format for information and the Protege editor. (shrink)

In this paper we disambiguate the design stance as proposed by Daniel C. Dennett, focusing on its application to technical artefacts. Analysing Dennett’s work and developing his approach towards interpreting entities, we show that there are two ways of spelling out the design stance, one that presuppose also adopting Dennett’s intentional stance for describing a designing agent, and a second that does not. We argue against taking one of these ways as giving the correct formulation of the design stance in (...) Dennett’s approach, but propose to replace Dennett’s original design stance by two design stances: an intentional designer stance that incorporates the intentional stance, and a teleological design stance that does not. Our arguments focus on descriptions of technical artefacts: drawing on research in engineering, cognitive psychology and archaeology we show that both design stances are used for describing technical artefacts. A first consequence of this disambiguation is that a design stance, in terms of interpretative assumptions and in terms of the pragmatic considerations for adopting it, stops to be a stance that comes hierarchically between the physical stance and the intentional stance. A second consequence is that a new distinction can be made between types of entities in Dennett’s approach. We call entities to which the intentional designer stance is applied tools and entities to which the teleological design stance is applied instruments, leading to a differentiated understanding of, in particular, technical artefacts. (shrink)

Brain activity determines which relations between objects in the environment are perceived as differences and similarities in colour, smell, sound, etc. According to selectionism, brain activity does not create those relations; it only selects which of them are perceptually available to the subject on a given occasion. In effect, selectionism entails that perceptual experience is diaphanous, i.e. that sameness and difference in the phenomenal character of experience is exhausted by sameness and difference in the perceived items. It has been argued (...) that diaphaneity is undermined by phenomenological considerations and empirical evidence. This paper considers five prominent arguments of this sort and shows that none of them succeeds. (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 concept of humanity has taken on new meanings in the era of posthumanist debate. Engaging both prehumanist and posthumanist perspectives, Liliana Sikorska strips away layers of cognitive mappings performed over hundreds of years in Western culture to expose in her recent essay the mechanisms that have exacerbated the East–West divide. While the majority of discussed texts come from medieval and Victorian literature and culture, it becomes obvious to the reader of her book that the issues she explores are still (...) haunting the lives of people and nations worldwide today. (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)

According to the predictive coding theory of cognition , brains are predictive machines that use perception and action to minimize prediction error, i.e. the discrepancy between bottom–up, externally-generated sensory signals and top–down, internally-generated sensory predictions. Many consider PCT to have an explanatory scope that is unparalleled in contemporary cognitive science and see in it a framework that could potentially provide us with a unified account of cognition. It is also commonly assumed that PCT is a representational theory of sorts, in (...) the sense that it postulates that our cognitive contact with the world is mediated by internal representations. However, the exact sense in which PCT is representational remains unclear; neither is it clear that it deserves such status—that is, whether it really invokes structures that are truly and nontrivially representational in nature. In the present article, I argue that the representational pretensions of PCT are completely justified. This is because the theory postulates cognitive structures—namely action-guiding, detachable, structural models that afford representational error detection—that play genuinely representational functions within the cognitive system. (shrink)

Modern physics is founded on two mainstays: mathematical modelling and empirical verification. These two assumptions are prerequisite for the objectivity of scientific discourse. Here we show, however, that they are contradictory, leading to the ‘experiment paradox’. We reveal that any experiment performed on a physical system is—by necessity—invasive and thus establishes inevitable limits to the accuracy of any mathematical model. We track its manifestations in both classical and quantum physics and show how it is overcome ‘in practice’ via the concept (...) of environment. We argue that the unravelled paradox induces a new type of ‘ontic’ underdetermination, which has deep consequences for the methodological foundations of physics. (shrink)

This paper centers around the notion that internal, mental representations are grounded in structural similarity, i.e., that they are so-called S-representations. We show how S-representations may be causally relevant and argue that they are distinct from mere detectors. First, using the neomechanist theory of explanation and the interventionist account of causal relevance, we provide a precise interpretation of the claim that in S-representations, structural similarity serves as a “fuel of success”, i.e., a relation that is exploitable for the representation using (...) system. Then, we discuss crucial differences between S-representations and indicators or detectors, showing that—contrary to claims made in the literature—there is an important theoretical distinction to be drawn between the two. (shrink)

LEGO bricks have an enormous educational potential. The article analyzes the possibility of using the bricks in teaching philosophy. As a case in point, it describes the LEGO-LOGOS project, a method where the bricks have been successfully used in opening students to philosophical ideas. The project makes use of play (in this case with the LEGO bricks) to introduce students to philosophy and philosophizing. It tackles one of the biggest obstacles in teaching this subject, that is the resistance of students (...) to formulate and express their thoughts as the method allows for a free and creative expression of ideas and interpretations. The article describes the structure of the classes where the method is to be used and provides an analysis of educational and philosophical assumptions of LEGO-LOGOS also touching on the possibility of using the method as a tool in the school setting and beyond. (shrink)

TThis article analyzes the critique of the Piagetan theory of intellectual development made by American philosopher Gareth B. Matthews. Matthews analyzes Piaget's ideas from the perspective of the meaning and possibility of philosophizing among children. His use of Piaget is particularly relevant today because the theory of cognitive development has shaped modern education and contributes to the preservation of skepticism about children's philosophy. The article reconstructs and interprets Matthews' arguments, which consistently and systematically show that Piaget misunderstood children's philosophy. By (...) “child’s philosophizing,” Matthews refers to children's tendency to ask philosophically significant questions, their ability to problematize experience, their specific attitude toward the world, and their ability to sense the problems that great philosophers have been dealing with for centuries. Piaget interpreted all these observable features of children's thinking as intellectual deficits; Matthews argues against this interpretation. The discussion focuses on the problem of determining the criterion of intellectual maturity, the importance of creativity and fantasy in thinking, the development of concepts and language skills, and the related differences between children and adults' language use. This analysis of Matthews’ critique of the Piagetian theory of cognitive development concludes that child psychology needs to be more open to this aspect of children's thought and that psychologists and philosophers must seek to better understand the child's philosophizing. (shrink)