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This paper argues that many so‐called digital technologies can be construed as notational technologies, explored through the example of Monegraph, an art and digital asset management platform built on top of the blockchain system originally developed for the cryptocurrency bitcoin. As the paper characterizes it, a notational technology is the performance of syntactic notation within a field of reference, a technologized version of what Nelson Goodman called a “notational system.” Notational technologies produce abstracted entities through positive and reliable, or constitutive, tests of socially acceptable meaning. Accordingly, this account deviates from typical narratives of blockchains (usually characterized as Turing or state machines), instead demonstrating that blockchain technologies are effective at managing digital assets because they produce abstracted identities through the performance of notation. Since notational technologies rely on configurations of socially acceptable meaning, this paper also provides a philosophical account of how blockchain technologies are socially embedded.

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Solutions to global sustainability challenges are increasingly technology-intensive. Yet, technologies are neither developed nor applied to governance problems in a socio-political vacuum. Despite aspirations to provide novel solutions to current sustainability governance challenges, many technology-centred projects, pilots and plans remain implicated in longer-standing global governance trends shaping the possibilities for success in often under-recognized ways. This article identifies three overlapping contexts within which technology-led efforts to address sustainability challenges are evolving, highlighting the growing roles of: (1) private actors; (2) experimentalism; and (3) informality. The confluence of these interconnected trends illuminates an important yet often under-recognized paradox: that the use of technology in multi-stakeholder initiatives tends to reduce rather than expand the set of actors, enhancing instead of reducing challenges to participation and transparency, and reinforcing rather than transforming existing forms of power relations. Without recognizing and attempting to address these limits, technology-led multi-stakeholder initiatives will remain less effective in addressing the complexity and uncertainty surrounding global sustainability governance. We provide pathways for interrogating the ways that novel technologies are being harnessed to address long-standing global sustainability issues in manners that foreground key ethical, social and political considerations and the contexts in which they are evolving.

If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -The paper's aim is to describe the world of retrocomputing, a constellation of largely non-professional practices involving old computing technology. It seeks to show how retrocomputing serves the goals of collection and preservation, particularly in regards to historic software, and how retrocomputing practices challenge traditional notions of authenticity. It then seeks to propose an alternative conceptualization and suggest new avenues for collaboration between retrocomputing practitioners and memory institutions. Design/methodology/approach -The paper is based on extensive observation of retrocomputing projects, conducted primarily online. Findings -Retrocomputing includes many activities that can be seen as constituting collection and preservation. At the same time, it is often transformative, producing assemblages that "remix" fragments from the past with newer elements or joining together historic components that were never combined before. While such "remix" may seem to undermine preservation, it also allows for fragments of computing history to be reintegrated into a living, ongoing practice, contributing to preservation in a broader sense. The seemingly unorganized nature of retrocomputing assemblages also provides space for alternative "situated knowledges" and histories of computing, which can sometimes be quite sophisticated.Research limitations/implications -Retrocomputing challenges established notions of collection and preservation. A "situated knowledges" perspective provides a possible resolution. Practical implications -Retrocomputing presents memory institutions (and libraries in particular) with an opportunity for new forms of collaboration in collection and preservation of software applications. Originality/value -The paper puts at the center the ways in which retrocomputing challenges the established notions of collection and preservation. It offers alternative conceptualizations that suggest new forms of collaboration.

This special issue introduces the study of financial technologies and finance to the field of philosophy of technology, bringing together two different fields that have not traditionally been in dialogue. The included articles are: Digital Art as 'Monetised Graphics': Enforcing Intellectual Property on the Blockchain, by Martin Zeilinger; Fundamentals of Algorithmic Markets: Liquidity, Contingency, and the Incomputability of Exchange, by Laura Lotti; 'Crises of Modernity' Discourses and the Rise of Financial Technologies in a Contested Mechanized World, by Marinus Ossewaarde; Two Technical Images: Blockchain and High-Frequency Trading, by Diego Viana; and The Blockchain as a Narrative Technology: Investigating the Social Ontology and Normative Configurations of Cryptocurrencies, by Wessel Reijers and Mark Coeckelbergh. Keywords Financial technologies . Philosophy of financial technology . Ethics of financial technologies . Cryptocurrencies . Algorithmic trading This special issue introduces studies of financial technologies and finance to the field of philosophy of technology, bringing together two different fields that have not traditionally been in dialogue.

Computer Professionals for Social Responsibility (CPSR) began in 1981 as a group of computer scientists concerned about nuclear destruction. Early CPSR members analysed military planning documents and levelled technical critiques at how computers were to be used in battle, highlighting the limits of computing technologies. Although early CPSR arguments were primarily technical, as responsible professionals their practices were based on a collective morality and a willingness to question their profession's economic self-interest. As the Cold War thawed in 1989, CPSR met a series of challenges, including financial issues, leadership turnover, and a changing and expanding role for information technology. CPSR emerged from this crisis with a renewed focus on "civil liberties" that was largely underwritten by the Electronic Frontier Foundation. Although CPSR's civil liberties advocacy sometimes retained its early arguments and practices by addressing the limitations of information technologies, they also adopted the emerging views of Silicon Valley's "digital utopianism," advocating for the growth of information technology. We describe this seemingly contradictory shift in responsibility along three axes: the use of standpoint epistemology for responsible computing, a transition from professional choice to lobbying, and a transition from substantivism to instrumentalism. In this paper, we characterize an important instance of collective responsibility for computing by tracing the evolution of CPSR's first decade of practices, techniques, and arguments with an eye towards the challenges of responsible computing today.

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