Puzzles of logic involve knights, knaves, gods, demons, and mortals, and Inspector Craig conducts a summer-long adventure in combinatory logic, basic to computer science and artificial intelligence.

Many want to know what bitcoin is and how it works. But bitcoin is as complex as it is controversial, and relatively few have the technical background to understand it. In this paper, I offer an accessible on-ramp for understanding bitcoin in the form of a model. My model reveals both what bitcoin is and how it works. More specifically, it reveals that bitcoin is a fictional substance in a massively coauthored story on a network that automates and distributes jobs (...) normally entrusted to centralized publishing institutions. My model therefore falsifies a popular view according to which each bitcoin is a chunk of code. (shrink)

This article argues that most of the approaches to the foundations of statistical mechanics have severed their link with the original foundational project, the project of demonstrating how real mechanical systems can behave thermodynamically.

Pinillos’ Why We Doubt presents a powerful critique of such global skeptical assertions as “I don’t know I am not a brain-in-a-vat (biv)” by introducing a cognitive mechanism that is sensitive to error possibilities and a Bayesian rule of rationality that this mechanism is designed to approximate. This multifaceted argument offers a novel counter to global skepticism, contending that our basis for believing such premises is underminable. In this work, we engage with Pinillos’ adoption of Bayesianism, questioning whether the Bayesian (...) principle that he invokes truly does fail to generate the verdict that we don’t we aren’t biv s, contrary to what Pinillos asserts. Furthermore, we argue that Pinillos’ empirical argument is not empirical enough; we need a lot more empirical work if we are going to counter global skepticism and win over neutral bystanders. (shrink)

The Aristotelian-Thomist claim is that external actions can be morally evaluated when they are voluntary (which includes being based on reasonably accurate knowledge of what an agent is doing), absent which, in effect, we evaluate outcomes, not acts. Also, in the Aristotelian-Thomist tradition the internal act of the will is paramount. These claims contrast with some current theorizing, e.g., by Judith Jarvis Thomson, that morally evaluates actions separately from agents, downplaying the internal act. Taking cases from current authors that revolve (...) around ignorance of key facts, I critique their theorizing on the basis of the nature of agency, the nature of abstraction, the moral language we use in describing acts, the need for reasonably complete descriptions of acts, and the tendency of act evaluations to “leak” into agent evaluations in objective theories. I then describe how Thomas Aquinas’s account of moral evaluation avoids these problems and provides a superior, multi-dimensional framework for moral evaluation. (shrink)

Is there any difference between playing video games in which the player’s character commits murder and video games in which the player’s character commits pedophilic acts? Morgan Luck’s “Gamer’s Dilemma” has established this question as a puzzle concerning notions of permissibility and harm. We propose that a fruitful alternative way to approach the question is through an account of aesthetic engagement. We develop an alternative to the dominant account of the relationship between players and the actions of their characters, and (...) argue that the ethical difference between so-called “virtual murder” and “virtual pedophilia” is to be understood in terms of the fiction-making resources available to players. We propose that the relevant considerations for potential players to navigate concern (1) attempting to make certain characters intelligible, and (2) using aspects of oneself as resources for homomorphic representation. (shrink)

We describe a model of iterated belief revision that extends the AGM theory of revision to account for the effect of a revision on the conditional beliefs of an agent. In particular, this model ensures that an agent makes as few changes as possible to the conditional component of its belief set. Adopting the Ramsey test, minimal conditional revision provides acceptance conditions for arbitrary right-nested conditionals. We show that problem of determining acceptance of any such nested conditional can be reduced (...) to acceptance tests for unnested conditionals. Thus, iterated revision can be accomplished in a "virtual" manner, using uniterated revision. (shrink)

In deciding whether to forgive, we often focus on the wrongdoer, looking for an apology or a change of ways. However, to fully consider whether to forgive, we need to expand our focus from the wrongdoer and their wrongdoing, and we need to consider who we are, what we care about, and what we want to care about. The difference between blame and forgiveness is, at bottom, a difference in priorities. When we blame, we prioritize the wrong, and when we (...) forgive, we shift our priorities away from the wrong. Recognizing this essential role for priorities in forgiveness allows us to address a thorny puzzle in thinking about forgiveness: how is it that forgiveness can be both principled and elective? If there is sufficient reason to forgive, as will sometimes be the case because forgiveness is principled, how can it be reasonable to withhold forgiveness? Recognizing that forgiveness is a shift in our priorities dissolves this apparent tension between forgiveness being principled and forgiveness being elective. (shrink)

Thomas Szasz famously argued that mental illness is a myth. Less famously, Szasz argued that since mental illness is a myth, so too is psychotherapy. Szasz’ claim that mental illness is a myth has been much discussed, but much less attention has been paid to his claim that psychotherapy is a myth. In the first part of this essay, I critically examine Szasz’ discussion of psychotherapy in order to uncover the strongest version of his case for thinking that it is (...) a myth. As we’ll see, this involves an understanding of psychotherapeutic interventions as treatments of psychopathological problems. In the rest of this essay, I turn to this directly and argue that psychotherapy has an important non-pathocentric dimension. I argue that we fail to appreciate the nature and variety of psychotherapy if we concentrate only on its pathocentric dimensions. Though I use Szasz as a stalking horse, the substantive topic is the nature of psychotherapy. This enquiry falls into the philosophy of psychotherapy as distinct from the philosophy of psychiatry and the philosophy of psychoanalysis. (shrink)

Contemporary science presents us with the remarkable theory that the universe began to exist about fifteen billion years ago with a cataclysmic explosion called "the Big Bang." The question of whether Big Bang cosmology supports theism or atheism has long been a matter of discussion among the general public and in popular science books, but has received scant attention from philosophers. This book sets out to fill this gap by means of a sustained debate between two philosophers, William Lane (...) class='Hi'>Craig and Quentin Smith, who defend opposing positions. Craig argues that the Big Bang that began the universe was created by God, while Smith argues that the Big Bang has no cause. Alternating chapters by the two philosophers criticize and attempt to refute preceding arguments. Their arguments are based on Einstein's theory of relativity and include a discussion of the new quantum cosmology recently developed by Stephen Hawking and popularized in A Brief History of Time. (shrink)

This paper searches for an explicit expression of the so-called problem of the direction of time. I argue that the traditional version of the problem is an artifact of a mistaken view in the foundations of statistical mechanics, and that to the degree it is a problem, it is really one general to all the special sciences. I then search the residue of the traditional problem for any remaining difficulty particular to time's arrow and find that there is a special (...) puzzle for some types of scientific realist. (shrink)

God is conceived in the Western theistic tradition to be both the Creator and Conservor of the universe. These two roles were typically classed as different aspects of creation, originating creation and continuing creation. On pain of incoherence, however, conservation needs to be distinguished from creation. Contrary to current analyses (such as Philip Quinn's), creation should be explicated in terms of God's bringing something into being, while conservation should be understood in terms of God's preservation of something over an interval (...) of time. The crucial difference is that while conservation presupposes an object of the divine action, creation does not. Such a construal has significant implications for a tensed theory of time. (shrink)

This article looks at Vesto Slipher’s work on nebular spectroscopy between 1912 and 1922as well as related research by other astronomers of the period, and it examines the dissem-ination of their results more widely. Slipher’s observations are viewed as marking the di-viding line between speculation about the universe in traditional astronomy and theadvent of modern cosmology and the theory of an expanding universe. The intent is todocument the dissemination of Slipher’s results in the period leading up to the publicationof studies (...) of relativistic cosmology by Willem de Sitter in 1917 and Alexander Friedmannin 1922. Themes touched on in the article include the unprecedented character ofSlipher’sfindings and the interaction of observation and theory in modern cosmology.A prominent concern is the role of technology in astronomical science over the past cen-tury and a half. Here reference is made to the writings of Paul Forman on historical shiftsthat have taken place in our understanding of the relationship of science and technology. (shrink)

There is still very little constitutional control over the decision to use armed force, and very limited domestic implementation of the international principles of jus ad bellum, notwithstanding the increasing overlap between international and domestic legal systems and the spread of constitutional democracy. The relationship between constitutional and international law constraints on the use of armed force has a long history. Aspects of constitutional theory, liberal theories of international law, and transnational process theory of international law compliance, suggest that constitutional (...) design could legitimately be used as a pre-commitment device to lock-in jus ad bellum principles, and thereby enhance compliance with that regime of international law. This paper examines the case of Japan's Constitution to determine the extent to which its war-renouncing provisions incorporated, and are consistent with, international law principles on the use of armed force, and whether the provisions operated to effectively constrain government policy. It concludes that the drafters of the Constitution did incorporate international law principles from jus ad bellum in Art. 9(1), though they also grafted on sui generis prohibitions and rules from jus in bello in Art. 9(2) as well, which complicates the story. The provision was embraced in the ratification process, and became the source of powerful constitutive norms that have helped shape Japan's sense of identity. The paper examines the interpretation of Art. 9, as informed by international law, and concludes that despite deep conflicts over competing narratives and understandings of the provision, the long-standing government interpretation of the provision is consistent with Japan's obligations under the jus ad bellum regime. In looking at the operation of Art. 9, the paper finds that despite the early use of Art. 9 by governments as a pretext behind which it could pursue desired policy objectives, the provision did operate to effectively constrain government policy in times of apparent crisis. During the Gulf War in particular, Art. 9 effectively bound a straining government to the mast, preventing Japan's participation in the war. It did so not only in its operation as a legal norm, effectively enforced by the Cabinet Legislation Bureau, but also as a powerful constitutive and social norm. As such, the experience of Japan with Art. 9 provides support for the argument that it is feasible to incorporate principles of jus ad bellum into national constitutions, so as to effectively constrain government policy with respect to engaging in armed conflict. Broader arguments as to why that might be desirable, or whether it has served Japan well or ill, are left for another day. (shrink)

In the bitcoin whitepaper, Satoshi Nakamoto (2008: 2) defines an electronic coin as a chain of digital signatures. Many have since defined a bitcoin as a chain of digital signatures. This latter definition continues to appear in reports from central banks, advocacy centers, and governments, as well as in academic papers across the disciplines of law, economics, computer science, cryptography, management, and philosophy. Some have even used it to argue that what we now call bitcoin is not the real bitcoin. (...) The definition fails, however. This is important because the Chain Definition obscures Satoshi’s solution to a dilemma in the design of electronic cash, as well as the truth about bitcoin’s privacy and fungibility. In this article, I explain why the Chain Definition fails and what Satoshi likely endorsed instead. Along the way, I untangle some issues around bitcoin fungibility and clarify some others around the ontology of digital assets. (shrink)

Over 50% of the world population will develop a psychiatric disorder in their lifetime.1 In the realm of psychiatric treatment, two primary modalities have been established: pharmacotherapy and psychotherapy. Yet, pharmacological interventions often take precedence as the initial treatment choice despite their comparable outcomes, severe side effects and disputed evidence of their efficacy. This preference for medication foregrounds a vital re-examination of what it means to be invasive in medical treatments, namely in psychiatric care. De Marco et al challenge the (...) standard account of invasiveness, presenting considerations that transcend the traditional criteria of physical intrusion.2 Through case studies centred on treatments for schizophrenia and depression, we aim to (1) reinforce De Marco et al ’s challenge to the standard account of invasiveness and (2) extend the dialogue to the moral imperative of redefining mental invasiveness. Our aims are to broaden the definition of mental invasiveness, aligning with De Marco et al ’s emphasis on context sensitivity, and to include the severity of side effects as a critical factor in this assessment. Redefining what is considered invasive in psychiatric treatment has profound implications for patient care and medical decision-making. Labelling treatments, namely medications, as invasive encourages both patients and healthcare providers to approach these options with a heightened level of scrutiny and care. This is …. (shrink)

This article explains a philosophy of mental health in the light of human dignity and flourishing from the perspective of a Catholic Christian meta-model of the person (meta-model). It conceptualizes healing as the search to attain wholeness of health, flourishing, and holiness through integrated practices at biophysical, emotional, mental, moral, social, and spiritual levels. Healing attains positive change consistent with human nature and flourishing through intra- and interpersonal sources. The paper uses the meta-model as a framework for integration and makes (...) explicit the presuppositions of a philosophical anthropology and ethics that synthesize insights from psychology, philosophy, and theology. It compares the metamodel to contemporary human sciences and ethics, such as that of positive psychology and confirms a value-, virtue-, and vocation-based approach to understand a Catholic philosophy of mental health and bioethics. (shrink)

Public debate on nanotechnology is a large topic within governments, research agencies, industry and non-government organisations. But depending who you talk to the perception of what the public thinks about nanotechnology can be very varied. To define coherent policy and to invest in research and development that aligns with public preferences, needs more than just perceptions of public perceptions. Public attitude studies are vital in understanding what the public really think, but they need to go further than simplistic polling and (...) should examine factors such as changes over time, drivers of attitude change, different attitudes to different applications and be supported by qualitative data. This paper summarises the findings of a three year tracking study of public attitudes towards nanotechnology, highlighting both concerns and aspirations for nanotechnology and discusses the impacts of that data on public engagement programs. (shrink)

Many of those memorialized around us in statues are wrongdoers, and so we are often called to consider whether we should take down those statues. Some of those statutes are memorialized for reasons now taken to be wrong; others are memorialized not for but rather despite their wrongdoing. How should we consider those latter cases? One tempting analysis suggests that we need only consider whether the wrongdoing was sufficiently transgressive. In this article, however, I reject that constrained focus. Instead, these (...) cases have as much to do with us, our priorities, and what those priorities should be as they have to do with the particulars of the lives of the subjects of the statues. Recognizing the central role that our priorities play in blame and condemnation better captures the contours of the debate about statue removal than any categorical rule about types of wrongs. (shrink)

In recent years, several prominent biologists have pointed to the relatively new field of evolutionary developmental biology as evidence of an Extended Synthesis in evolutionary biology. More particularly, these biologists claim that theoretical and empirical EvoDevo research is extending the Modern Synthesis framework of evolutionary theory through investigation of evolutionarily important concepts that are not part of the framework developed during the 20th century. To describe the current changes in evolutionary biology as an Extended Synthesis, however, is incorrect. Through review (...) of Extended Synthesis arguments and analysis of the same biological concepts used to support these arguments, I argue that the foundation of the Modern Synthesis framework, theoretical population genetics, faces significant, perhaps insurmountable challenges from the concepts highlighted by EvoDevo research. As the foundation of the Modern Synthesis framework will require considerable remodeling—if possible—in light of the concepts emphasized by EvoDevo, it is incorrect to describe the ongoing changes in evolutionary biology as an Extended Synthesis. (shrink)

In recent years, direct brain interventions have shown increased success in manipulating neurobiological processes often associated with moral reasoning and decision-making. As current DBIs are refined, and new technologies are developed, the state will have an interest in administering DBIs to criminal offenders for rehabilitative purposes. However, it is generally assumed that the state is not justified in directly intruding in an offender’s brain without valid consent. Thomas Douglas challenges this view. The state already forces criminal offenders to go to (...) jail without their consent. This represents a serious interference with an offender’s rights. If criminal offenders are already morally liable to incarceration, why is the state not also entitled to administer DBIs without consent for the purposes of rehabilitation? Douglas argument focuses on the right to ‘bodily integrity’. He argues that there is no compelling reason to believe that bodily rights that protect an offender from non-consensual DBIs are stronger than rights that protect an offender from incarceration. This paper will extend Douglas’ analysis. It will consider the more fundamental right to ‘mental integrity’. The right to mental integrity defends an inner sphere of liberty. It protects critical capacities necessary for the exercise of autonomous human agency—without which a vast majority of moral rights could not exist. Thus, the right to mental integrity is ultimately more important for a moral assessment of DBIs. The right strongly suggests that both presently, and in the future, there may be many cases in which the state is not entitled to administer DBIs to criminal offenders without valid consent. (shrink)

This paper aims to demonstrate the contemporary relevance of Adorno’s thought for business ethicists working in the critical tradition by showing how his critique of modern social life anticipated, and offers continuing illumination of, recent technological transformations of capitalism. It develops and extrapolates Adorno’s thought regarding three central spheres of modern society, which have seen radical changes in light of recent technological developments: work, in which employee monitoring has become ever more sophisticated and intrusive; leisure consumption, in which the algorithmic (...) developments of the culture industry have paved the way for entertainment products to dominate us; and political discourse, in which social media has exacerbated the anti-democratic tendencies Adorno warned of in the mid-twentieth century. We conclude by presenting, as a rejoinder to these developments, the contours of an Adornian ethics of resistance to the reification and dehumanisation of such developments. (shrink)

In this paper data from a Tanzanian horticultural population are used to assess whether mother’s kin network size predicts several measures of children’s health and well-being, and whether any kin effects are modified by household socioeconomic status. This hypothesis is further tested with a questionnaire on maternal attitudes towards kin. Results show small associations between measures of maternal kin network size and child mortality and children’s growth performance. Together these results suggest that kin positively influence child health, but the effects (...) are small and it is unlikely that the high prevalence of undernutrition observed in this setting is influenced by the availability of kin. (shrink)

We explore the better known paradoxes of Zeno including modern variants based on infinite processes, from the point of view of standard, classical analysis, from which there is still much to learn (especially concerning the paradox of division), and then from the viewpoints of non-standard and non-classical analysis (the logic of the latter being intuitionist).The standard, classical or Cantorian notion of the continuum, modeled on the real number line, is well known, as is the definition of motion as the time (...) derivative of distance (we are not concerned with position and motion in more than one dimension, since Zeno wasn't). The real number line consists of its points, the distance between distinct points being positive and finite. The standard, classical derivative relies on the classical notion of limit, which does not use infinitesimals. (shrink)

This article aims to articulate the richness of the pedagogical relation and pedagogical tact in an age of the near ubiquitous presence of digital education. Drawing on Citton, we argue that there is an ecology of attentional influence that is pedagogically decisive. Our argument proceeds as follows: first, we introduce Citton’s theoretical frame; second, we examine the general conception of education that is established and articulated through the pedagogical relations between educator, student and world; third, we consider the concept of (...) pedagogical tact and analyse how Citton’s framing of attention gives shape to understanding pedagogical tact; last, we connect attention to education, arguing that education concerns drawing attention to aspects of the world through pedagogically tactful action. We conclude by calling for greater reflection on aspects of education which are difficult to render digitally, and which rely on the speculative and interpretive capacities of the educator. (shrink)

This article analyzes “farmers’ rights” as a strategy of resistance against the perceived inequities of intellectual property rights regimes for plant varieties. As commercial models of intellectual property have made their way into agriculture, farmers’ traditional seed-saving practices have been increasingly delegitimized. In response, farmers have adopted the language of farmers’ rights to demand greater material recognition of their contributions and better measures to protect their autonomy. This campaign has mixed implications. On one hand, farmers’rights are a unique form of (...) right that may help transform conventions of intellectual property in ways that are better suited for registering and materially encouraging alternative forms of innovation, such as those offered by farming communities. On the other hand, farmers’ rights have proved enormously difficult to enact. And by situating farmers’rights alongside easily enacted commercial breeders’rights, the campaign risks further legitimizing the inequities it is responding to. (shrink)

As recently documented in J. Cushing’s excellent book, throughout its almost fifty-year history, Bohm’s interpretation of quantum mechanics has been systematically misunderstood and ignored. On the rare occasions it was examined, it was usually dismissed for reasons having more to do with politics, religion, positivism, and sloppy thought, than for reasons central to physics. In recent times, however, Bohm’s theory has received much more serious attention from physicists and philosophers, thanks mainly to J. S. Bell’s positive influence on the theory. (...) Most of this work reacts favorably toward Bohm’s theory. And this is not surprising, for Bohm’s theory provides us with a consistent, empirically adequate picture of the quantum world. (shrink)

In this paper we describe two approaches to the revision of probability functions. We assume that a probabilistic state of belief is captured by a counterfactual probability or Popper function, the revision of which determines a new Popper function. We describe methods whereby the original function determines the nature of the revised function. The first is based on a probabilistic extension of Spohn's OCFs, whereas the second exploits the structure implicit in the Popper function itself. This stands in contrast with (...) previous approaches that associate a unique Popper function with each absolute (classical) probability function. We also describe iterated revision using these models. Finally, we consider the point of view that Popper functions may be abstract representations of certain types of absolute probability functions, but we show that our revision methods cannot be naturally interpreted as conditionalization on these functions. (shrink)

What is addiction? Why do some people become addicted while others do not? Is the addict rational? In this book, Craig Hanson attempts to answer these questions and more. Using insights from the beginnings of philosophy to contemporary behavioral economics, Hanson attempts to assess the variety of ways in which we can and cannot, understand addiction. Special consideration is given to a challenging (and controversial) proposal dubbed "hyperbolic discounting." Hanson proposes some modifications to the hyperbolic discounting view that permit (...) it to explain not only addiction, but also a variety of psychological maladies, such as self-deception. (shrink)