This article introduces the symposium “Toward a Philosophy of Blockchain,” which provides a philosophical contemplation of blockchain technology, the digital ledger software underlying cryptocurrencies such as bitcoin, for the secure transfer of money, assets, and information via the Internet without needing a third-party intermediary. The symposium offers philosophical scholarship on a new topic, blockchain technology, from a variety of perspectives. The philosophical themes discussed include mathematical models of reality, signification, and the sociopolitical institutions that structure human life and interaction. The (...) symposium also investigates the metaphilosophical theme of how to create a philosophy of anything, specifically a new topic such as blockchain technology. Repeated themes are identified, in all areas of philosophical inquiry, and conceptual resources are elaborated to contribute to a philosophical understanding of blockchain technology. Thus, philosophy as a metaphilosophical approach is shown to be able to provide an understanding of the conceptual, theoretical, and foundational dimensions of novelty and emergence in the world, with a particular focus on blockchain technology. (shrink)

Bitcoin is a peer-to-peer electronic payment system that operates as an independent currency. This paper is a philosophical investigation of the ontological constitution of Bitcoin. Using Slavoj Žižek’s ontological triad of the real, the symbolic and the imaginary, the paper distinguishes between three ideal typical theories of money: commodity theory, fiat theory, and credit theory. The constitution of Bitcoin is analysed by comparing the currency to each of these ideal types. It is argued that Bitcoin is commodity money without gold, (...) fiat money without a state, and credit money without debt. In conclusion, it is suggested that Bitcoin poses an ideological challenge to conventional forms of money in so far as it not only provokes sedimented beliefs about money but also exposes the forms of exploitation, risk and even violence inherent in the existing system of state authorized credit money. (shrink)

Many standard philosophical accounts of scientific practice fail to distinguish between modeling and other types of theory construction. This failure is unfortunate because there are important contrasts among the goals, procedures, and representations employed by modelers and other kinds of theorists. We can see some of these differences intuitively when we reflect on the methods of theorists such as Vito Volterra and Linus Pauling on the one hand, and Charles Darwin and Dimitri Mendeleev on the other. Much of Volterra's and (...) Pauling's work involved modeling; much of Darwin's and Mendeleev's did not. In order to capture this distinction, I consider two examples of theory construction in detail: Volterra's treatment of post-WWI fishery dynamics and Mendeleev's construction of the periodic system. I argue that modeling can be distinguished from other forms of theorizing by the procedures modelers use to represent and to study real-world phenomena: indirect representation and analysis. This differentiation between modelers and non-modelers is one component of the larger project of understanding the practice of modeling, its distinctive features, and the strategies of abstraction and idealization it employs. (shrink)

This book presents a novel theory of fictional entities which is syncretistic insofar as it integrates the work of previous authors. It puts forward a new metaphysical conception of the nature of these This This book presents a novel theory of fictional entities which is syncretistic insofar as it integrates the work of previous authors. It puts forward a new metaphysical conception of the nature of these entities, according to which a fictional entity is a compound entity built up from (...) both a make-believe theoretical element and a set-theoretical element. The fictional entity is constructed by imagining the existence of an individual with certain properties and adding a set-theoretical element consisting of the set of properties corresponding to the properties of the imagined entity. Moreover, the book advances a new combined semantic and ontological defence of the existence of fictional entities. (shrink)

one takes to be the most salient, any pair could be judged more similar to each other than to the third. Goodman uses this second problem to showthat there can be no context-free similarity metric, either in the trivial case or in a scientifically ...

Critics of contemporary metaphysics argue that it attempts to do the hard work of science from the ease of the armchair. Physics, not metaphysics, tells us about the fundamental facts of the world, and empirical psychology is best placed to reveal the content of our concepts about the world. Exploring and understanding the world through metaphysical reflection is obsolete. In this paper, I will show why this critique of metaphysics fails, arguing that metaphysical methods used to make claims about the (...) world are similar to scientific methods used to make claims about the world, but that the subjects of metaphysics are not the subjects of science. Those who argue that metaphysics uses a problematic methodology to make claims about subjects better covered by natural science get the situation exactly the wrong way around: metaphysics has a distinctive subject matter, not a distinctive methodology. The questions metaphysicians address are different from those of scientists, but the methods employed to develop and select theories are similar. In the first section of the paper, I will describe the sort of subject matter that metaphysics tends to engage with. In the second section of the paper, I will show how metaphysical theories are classes of models and discuss the roles of experience, common sense and thought experiments in the construction and evaluation of such models. Finally, in the last section I will discuss the way these methodological points help us to understand the metaphysical project. Getting the right account of the metaphysical method allows us to better understand the relationship between science and metaphysics, to explain why doing metaphysics successfully involves having a range of different theories, to understand the role of thought experiments involving fictional worlds, and to situate metaphysical realism in a scientifically realist context. (shrink)

Metaphysics is once again a thriving subdiscipline within philosophy, despite a long tradition of challenges to the very viability of the metaphysical enterprise. The criticisms have not so much been satisfactorily answered, as shouldered aside by the vigorous development of the field. Some focused meta-theoretic discussion has recently arisen within mainstream metaphysics.1 The present paper is written more from an outsider's vantage point. I attempt to give a new meta-theory for some parts of metaphysics. The central claim is that much (...) metaphysical work, especially of the contemporary systematic kind, might best be understood as model-building, in a specific sense of this term that draws on recent philosophy of science. (shrink)

In this book Terence Parsons revives the older tradition of taking such objects at face value. Using various modern techniques from logic and the philosophy of language, he formulates a metaphysical theory of nonexistent objects. The theory is given a formalization in symbolism rich enough to contain definite descriptions, modal operators, and epistemic contexts, and the book includes a discussion which relates the formalized theory explicitly to English.

Creationism is the conjunction of the following theses: (i) fictional individuals (e.g. Sherlock Holmes) actually exist; (ii) fictional names (e.g., 'Holmes') are at least sometimes genuinely referential; (iii) fictional individuals are the creations of the authors who first wrote (or spoke, etc.) about them. CA Creationism is the conjunction of (i) - (iii) and the following thesis: (iv) fictional individuals are contingently existing abstracta; they are non-concrete artifacts of our world and various other possible worlds. TakashiYagisawa has recently provided a (...) number of arguments designed to show that Creationism is unjustified. I here critically examine three of his challenges to CA Creationism. I argue that each fails to undermine this version of Creationism. (shrink)

John Stuart Mill (1843) thought that proper names denote individuals and do not connote attributes. Contemporary Millians agree, in spirit. We hold that the semantic content of a proper name is simply its referent. We also think that the semantic content of a declarative sentence is a Russellian structured proposition whose constituents are the semantic contents of the sentence’s constituents. This proposition is what the sentence semantically expresses. Therefore, we think that sentences containing proper names semantically express singular propositions, which (...) are propositions having individuals as constituents. For instance, the sentence ‘George W. Bush is human’ semantically expresses a proposition that has Bush himself as a constituent. Call this theory Millianism. Many philosophers initially find Millianism quite appealing, but find it much less so after considering its many apparent problems. Among these problems are those raised by non-referring names, which are sometimes (tendentiously) called empty names. Plausible examples of empty names include certain names from fiction, such as ‘Sherlock Holmes’, which I shall call fictional names, and certain names from myth and false scientific theory, such as ‘Pegasus’ and ‘Vulcan’, which I shall call mythical names. I have defended Millianism from objections concerning empty names in previous work (Braun 1993). In this paper, I shall re-present those objections, along with some new ones. I shall then describe my previous Millian theory of empty names, and my previous replies to the objections, and consider whether the theory or replies need revision. I shall next consider whether fictional and mythical names are really empty. I shall argue that at least some utterances of mythical names are. (shrink)

It is usually taken for granted, in discussions about fiction, that real things or events can occur as referents of fictional names . In this paper, I take issue with this view, and provide several arguments to the effect that it is better to take the names in fiction to refer to fictional surrogates of real objects. Doing so allows us to solve a series of problems that arise on the reference-continuity view. I also show that the arguments philosophers usually (...) rely on in order to ban surrogates are not as serious as they have been taken to be. In the first part of the paper, I describe the two conflicting views. In the second part, I discuss several specific arguments in favor of surrogates. In the third part I take up the kind of reasons ordinarily offered against them. (shrink)