The study of expertise is difficult to do in a laboratory environment due to the challenge of finding people at different skill levels and the lack of time for participants to acquire mastery. In this paper, we report on two studies that analyze naturalistic gameplay data using cohort analysis to better understand how skill relates to practice and habit. Two cohorts are analyzed, each from two different games. Our work follows skill progression through 7 months of Halo matches for a (...) holistic perspective, but also explores low-level in-game habits when controlling game units in StarCraft 2. Players who played moderately frequently without long breaks were able to gain skill the most efficiently. What set the highest performers apart was their ability to gain skill more rapidly and without dips compared to other players. At the beginning of matches, top players habitually warmed up by selecting and re-selecting groups of units repeatedly in a meaningless cycle. They exhibited unique routines during their play that aided them when under pressure. (shrink)

This volume bridges this longstanding divide by demonstrating how rigorous experimental methods can be applied to understanding key existential concerns, ...

John Duns Scotus recognizes complexity in God both at the level of God’s being and at the level of God’s attributes. Using the formal distinction and the notion of “unitive containment,” he argues for real plurality in God, but in a way that permits him to affirm the doctrine of divine simplicity. We argue that his allegiance to the doctrine of divine simplicity is purely verbal, that he flatly denies traditional aspects of the doctrine as he had received it from (...) Augustine, Anselm, and Aquinas, and that his denial of the doctrine allows him to escape certain counterintuitive consequences of the doctrine without falling afoul of the worries that motivated the doctrine in the first place. We note also an important consequence of Scotus’s approach to simplicity for the correct interpretation of his view of the foundation of morality. (shrink)

John Duns Scotus recognizes complexity in God both at the level of God’s being and at the level of God’s attributes. Using the formal distinction and the notion of “unitive containment,” he argues for real plurality in God, but in a way that permits him to affirm the doctrine of divine simplicity. We argue that his allegiance to the doctrine of divine simplicity is purely verbal, that he flatly denies traditional aspects of the doctrine as he had received it from (...) Augustine, Anselm, and Aquinas, and that his denial of the doctrine allows him to escape certain counterintuitive consequences of the doctrine without falling afoul of the worries that motivated the doctrine in the first place. We note also an important consequence of Scotus’s approach to simplicity for the correct interpretation of his view of the foundation of morality. (shrink)

The semantics of noun phrases (NPs) is of crucial importance for both philosophy and linguistics. Throughout much of the history of the debate about the semantics of noun phrases there has been an implicit assumption about how they are to be understood. Basically, it is the assumption that NPs come only in two kinds. In this paper we would like to make that assumption explicit and discuss it and its status in the semantics of natural language. We will have a (...) look at how the assumption is to be understood more precisely, what its methodological status should be, whether it has been abandoned in recent work in semantics, and whether it should be abandoned in future work. To do all this, it’s best to start with some historical context. (shrink)

In this article, the relationship between second-order comprehension and unrestricted mereological fusion (over atoms) is clarified. An extension PAF of Peano arithmetic with a new binary mereological notion of “fusion”, and a scheme of unrestricted fusion, is introduced. It is shown that PAF interprets full second-order arithmetic, Z_2.

We study the wisdom of the crowd in three sequential decision‐making tasks: the Balloon Analogue Risk Task (BART), optimal stopping problems, and bandit problems. We consider a behavior‐based approach, using majority decisions to determine crowd behavior and show that this approach performs poorly in the BART and bandit tasks. The key problem is that the crowd becomes progressively more extreme as the decision sequence progresses, because the diversity of opinion that underlies the wisdom of the crowd is lost. We also (...) consider model‐based approaches to each task. This involves inferring cognitive models for each individual based on their observed behavior, and using these models to predict what each individual would do in any possible task situation. We show that this approach performs robustly well for all three tasks and has the additional advantage of being able to generalize to new problems for which there are no behavioral data. We discuss potential applications of the model‐based approach to real‐world sequential decision problems and discuss how our approach contributes to the understanding of collective intelligence. (shrink)

Biological evolution provides a creative fount of complex and subtle adaptations, often surprising the scientists who discover them. However, because evolution is an algorithmic process that transcends the substrate in which it occurs, evolution’s creativity is not limited to nature. Indeed, many researchers in the field of digital evolution have observed their evolving algorithms and organisms subverting their intentions, exposing unrecognized bugs in their code, producing unexpected adaptations, or exhibiting outcomes uncannily convergent with ones in nature. Such stories routinely reveal (...) creativity by evolution in these digital worlds, but they rarely fit into the standard scientific narrative. Instead they are often treated as mere obstacles to be overcome, rather than results that warrant study in their own right. The stories themselves are traded among researchers through oral tradition, but that mode of information transmission is inefficient and prone to error and outright loss. Moreover, the fact that these stories tend to be shared only among practitioners means that many natural scientists do not realize how interesting and lifelike digital organisms are and how natural their evolution can be. To our knowledge, no collection of such anecdotes has been published before. This paper is the crowd-sourced product of researchers in the fields of artificial life and evolutionary computation who have provided first-hand accounts of such cases. It thus serves as a written, fact-checked collection of scientifically important and even entertaining stories. In doing so we also present here substantial evidence that the existence and importance of evolutionary surprises extends beyond the natural world, and may indeed be a universal property of all complex evolving systems. (shrink)

What is science? What is the purpose of science education? Should we be training scientists, or looking towards a greater public understanding of science? In this exciting text, some of the key figures in the fields of science and science education address this debate. Their contributions form an original dialogue on science education and the general public awareness of science, tackling both formal and informal aspects of science learning. the editors argue that a greater knowledge of science can lead to (...) a better future, but that this can only happen through a mutual understanding between scientists, schools and the public. (shrink)

1 Evidence-based policy requires researchers to provide the answers to ecological questions that are of interest to policy makers. To find out what those questions are in the UK, representatives from 28 organizations involved in policy, together with scientists from 10 academic institutions, were asked to generate a list of questions from their organizations. 2 During a 2-day workshop the initial list of 1003 questions generated from consulting at least 654 policy makers and academics was used as a basis for (...) generating a short list of 100 questions of significant policy relevance. Short-listing was decided on the basis of the preferences of the representatives from the policy-led organizations. 3 The areas covered included most major issues of environmental concern in the UK, including agriculture, marine fisheries, climate change, ecosystem function and land management. 4 The most striking outcome was the preference for general questions rather than narrow ones. The reason is that policy is driven by broad issues rather than specific ones. In contrast, scientists are frequently best equipped to answer specific questions. This means that it may be necessary to extract the underpinning specific question before researchers can proceed. 5 Synthesis and applications. Greater communication between policy makers and scientists is required in order to ensure that applied ecologists are dealing with issues in a way that can feed into policy. It is particularly important that applied ecologists emphasize the generic value of their work wherever possible. (shrink)

Heidegger scholars consider the philosopher's recently published notebooks, including the issues of Heidegger's Nazism and anti-Semitism. For more than forty years, the philosopher Martin Heidegger logged ideas and opinions in a series of notebooks, known as the “Black Notebooks” after the black oilcloth booklets into which he first transcribed his thoughts. In 2014, the notebooks from 1931 to 1941 were published, sparking immediate controversy. It has long been acknowledged that Heidegger was an enthusiastic supporter of the Nazi Party in the (...) early 1930s. But the notebooks contain a number of anti-Semitic passages—often referring to the stereotype of “World-Jewry”—written even after Heidegger became disenchanted with the Nazis themselves. Reactions from the scholarly community have ranged from dismissal of the significance of these passages to claims that the anti-Semitism in them contaminates all of Heidegger's work. This volume offers the first collection of responses by Heidegger scholars to the publication of the notebooks. In essays commissioned especially for the book, the contributors offer a wide range of views, addressing not only the issues of anti-Semitism and Nazism but also the broader questions that the notebooks raise. Contributors Babette Babich, Andrew Bowie, Steven Crowell, Fred Dallmayr, Donatella Di Cesare, Michael Fagenblat, Ingo Farin, Gregory Fried, Jean Grondin, Karsten Harries, Laurence Paul Hemming, Jeff Malpas, Thomas Rohkrämer, Tracy B. Strong, Peter Trawny, Daniela Vallega-Neu, Friedrich-Wilhelm von Herrmann, Nancy A. Weston, Holger Zaborowski. (shrink)

Does God love every human equally and to the deepest degree possible? In an earlier article I argued that no one could, in principle, love every human equally and to the deepest degree possible. Thomas Talbott has objected and argues that a model of the divine love extended equally to all best captures the idea of God as loving parent. I contend that Talbott’s argument fails, in part, as it implies that the divine love treats the interests of humans (...) as fungible. (shrink)

Ethical non-naturalists posit a sui generis realm of moral and evaluative properties, while ethical naturalists identify moral and evaluative properties with natural or descriptive properties. First, I explore the standard arguments in favor of an ethical non-naturalist account of goodness, specifically the open-question argument. Then, I examine Philippa Foot’s criticism of the open-question argument and her alternative neo-Aristotelian theory of goodness. Foot’s account, I argue, is vulnerable to a revised version of the open-question argument. Finally, I suggest two ways that (...) Foot can escape the revised open-question argument: Either via a classical naturalist account, inspired by Thomas Aquinas, that identifies goodness with the fulfillment of a thing’s function, or by characterizing her account as a version of non-reductive naturalism akin to non-reductive physicalism in philosophy of mind. In either case, I argue that Foot’s neo-Aristotelian naturalism is preferable to ethical non-naturalism concerning the property of goodness. (shrink)

to appear in N. Ann Davis, Richard Keshen, and Jeff McMahan, eds., Ethics and Humanity: Themes From the Writing of Jonathan Glover (New York: Oxford University Press).

Taking an image by Thomas Hoepker as its starting point, this essay examines the discontinuities and contradictions that appear around the contemporary rhetoric of the ‘event’ as given particular instantiation in the destruction of the World Trade Centre on September 11, 2001. It is argued that the rhetoric at issue here, in spite of its emphasis on the ‘eventful’ character of our time, actually serves to conceal the urgency of our contemporary situation as well as disabling any genuine response (...) to it. (shrink)

Taking an image by Thomas Hoepker as its starting point, this essay examines the discontinuities and contradictions that appear around the contemporary rhetoric of the ‘event’ as given particular instantiation in the destruction of the World Trade Centre on September 11, 2001. It is argued that the rhetoric at issue here, in spite of its emphasis on the ‘eventful’ character of our time, actually serves to conceal the urgency of our contemporary situation as well as disabling any genuine response (...) to it. (shrink)

In his new book Saving Animals, Saving Ourselves: Why Animals Matter for Pandemics, Climate Change, and Other Catastrophes Jeff Sebo argues that animals matter with regard to human-induced crises and that humans have a moral responsibility to prevent, reduce, or repair the increasing amount of nonhuman suffering and death that we find in today’s world. Moreover, he attempts to show how these various human-induced crises are interlinked among themselves and with our treatment of animals in a number of complex (...) ways on both the levels of empirical facts and moral considerations. In this review I summarize Sebo’s argumentation and then critically evaluate it. (shrink)

The moral issues about nationalism arise from the character of nationalism as a form of partiality. Nationalists care more about their own nation and its members than about other nations and their members; in that way nationalists are partial to their own national group. The question, then, is whether this national partiality is morally justified or, on the contrary, whether everyone ought to care impartially about all members of all nations. As Jeff McMahan emphasizes in [another chapter of the (...) book in which this essay appears], a philosophical examination of this question must consider the specific features of nationalism as one form of partiality among others. Some partiality--for example, toward one's spouse and children--seems morally acceptable and even a duty. According to commonsense moral thinking, one not only may but also should care more about one's family members than about strangers. But other instances of partiality, most notably racial partiality, are in most circumstances widely condemned. Is national partiality more like familial partiality or more like racial partiality? To answer this question, we must know what in general justifies attitudes of partiality. Caring more about certain people is appropriate when one stands in certain special relations to those people. But what are these relations, and to what degree do they hold among members of the same nation? Assuming they are present within families and not within races, to what degree are they present within nations? (shrink)

This paper is a response to Jeff McMahan's "Just Cause for War". It defends a more permissive, and more traditional view of just war liability against McMahan's claims.

This paper discusses the novel versions of the right intention and proportionality conditions in the ius ad bellum proposed in Chapter 3 of Frances Kamm’s Ethics for Enemies. It argues that Kamm is right to weaken the right intention condition to require, not positively intending a war’s just cause, but only having that cause’s presence be a necessary condition for war, but wrong to place no limits on why one makes a just cause necessary. It then argues that the weakening (...) she proposes of Jeff McMahan’s very strict interpretation of proportionality does not go far enough. She argues that “conditional just aims” such as disarming an aggressor and deterring future aggression can count toward a war’s proportionality only if they will follow from harms needed to achieve the war’s initial just cause but not if they require additional harms. The paper argues that such aims can justify additional harms. (shrink)

Following an initial discussion of the general nature of interpretation in contemporary psychology, and social and natural science, relevant views of Charles Taylor and Thomas Kuhn are considered in some detail. Although both Taylor and Kuhn agree that interpretation in the social or human sciences differs in some ways from interpretation in the natural sciences, they disagree about the nature and origins of such difference. Our own analysis follows, in which we consider differences in interpretation between the natural and (...) social sciences in terms of Ian Hacking's use of Elizabeth Anscombe's conceptualization of actions as intentional acts under particular descriptions. We conclude that both Taylor and Kuhn are correct to point to differences in interpretation between the natural and social sciences. We also argue that in psychology, such interpretive differences, contra Kuhn and pro Taylor, are qualitative rather than quantitative. They arise from the nature of persons as self-interpretive, reactive beings who act under socioculturally sanctioned, linguistic descriptions. The actions of psychological persons may display qualitative differences over time and across contexts as these descriptions, including social scientific and psychological findings and interpretations, change. In contrast, even when descriptions in natural science change, such changes do not spawn changes in the self-interpretations and intentional actions of the focal phenomena of natural science. We also make the point that much current confusion surrounding interpretation in science arises from the unwarranted tendency of some commentators to treat interpretation as subjective, in ways that ignore the objective grounding of interpretation within regulated social practices, including scientific practices sanctioned by scientific communities. (shrink)

Jeff Jordan has recently challenged the idea, widely accepted among theistic philosophers, that “God’s love must be maximally extended and equally intense.” By way of a response, I suggest a way to sidestep Jordan’s argument entirely and then try to show that his own argument is multiply flawed. I thus conclude that his challenge is unsuccessful.

This paper discusses some of the practical difficulties confronting Jeff McMahan’s proposal of a jus ad bellum court of experts for deciding the justice of war, and recommends two revisions. First, following the earlier proposals of Vitoria, Suarez, and Grotius, leaders could have a say in appointing judges to the ad bellum court; second, the court could be an organ of the International Criminal Court. Though significant practical challenges remain, these revisions make McMahan’s proposal fairer to democratic governments, and (...) give the court a better chance for successful implementation in the prevailing Westphalian system of state sovereignty. (shrink)

This paper discusses some of the practical difficulties confronting Jeff McMahan’s proposal of a jus ad bellum court of experts for deciding the justice of war, and recommends two revisions. First, following the earlier proposals of Vitoria, Suarez, and Grotius, leaders could have a say in appointing judges to the ad bellum court; second, the court could be an organ of the International Criminal Court. Though significant practical challenges remain, these revisions make McMahan’s proposal fairer to democratic governments, and (...) give the court a better chance for successful implementation in the prevailing Westphalian system of state sovereignty. (shrink)

Jeff McMahan, one of the leading contemporary writers on ‘just war thinking’, argues in the book under review, Killing in War, that one of the central tenets of the ‘ius in bello’, namely the moral equality of combatants, is both conceptually and morally untenable. This results from a reflection upon and a departure from two basic assumptions in Walzer’s work, namely the idea that war itself isn’t a relation between persons, but between political entities and their human instruments and (...) the idea that the ‘ius ad bellum’ and ‘ius in bello’ are and should be kept distinct. This book merits serious reflection. However, the disadvantages of McMahan’s position are obvious. If the rights of combatants during war depend on the justice of their cause, the immunity of the civilians on the side of the supposed ‘unjust’ enemy is seriously endangered. (shrink)

Jeff McMahan urges us to reject the view, dominant throughout history, that mere participation in an unjust war is not wrong.

In 2020, COVID-19, the Australia bushfires, and other global threats served as vivid reminders that human and nonhuman fates are increasingly linked. Human use of nonhuman animals contributes to pandemics, climate change, and other global threats which, in turn, contribute to biodiversity loss, ecosystem collapse, and nonhuman suffering. Jeff Sebo argues that humans have a moral responsibility to include animals in global health and environmental policy. In particular, we should reduce our use of animals as part of our pandemic (...) and climate change mitigation efforts and increase our support for animals as part of our adaptation efforts. Applying and extending frameworks such as One Health and the Green New Deal, Sebo calls for reducing support for factory farming, deforestation, and the wildlife trade; increasing support for humane, healthful, and sustainable alternatives; and considering human and nonhuman needs holistically. Sebo also considers connections with practical issues such as education, employment, social services, and infrastructure, as well as with theoretical issues such as well-being, moral status, political status, and population ethics. In all cases, he shows that these issues are both important and complex, and that we should neither underestimate our responsibilities because of our limitations, nor underestimate our limitations because of our responsibilities. Both an urgent call to action and a survey of what ethical and effective action requires, Saving Animals, Saving Ourselves is an invaluable resource for scholars, advocates, policy-makers, and anyone interested in what kind of world we should attempt to build and how. (shrink)

This chapter is devoted to criticisms of the views of propositions defended by my co-authors, Jeff King and Scott Soames. The focus is on criticism of their attempts to explain the representational properties of propositions. The criticisms are varied, but one theme is a tension between their view that our actions can explain the representational properties of propositions and their commitment to the idea that propositions have their representational properties essentially.

This paper considers questions that small animals and AI systems raise for utilitarianism. Specifically, if these beings have more welfare than humans and other large animals, then utilitarianism implies that we should prioritize them, all else equal. This could lead to a ‘rebugnant conclusion’, according to which we should, say, create large populations of small animals rather than small populations of large animals. It could also lead to a ‘Pascal’s bugging’, according to which we should, say, prioritize large populations of (...) small animals even if they have a low chance of being sentient. I suggest that utilitarians should accept these implications in theory but might be able to avoid some of them in practice. (shrink)

In this book, T. M. Scanlon offers new answers to these questions, as they apply to the central part of morality that concerns what we owe to each other.

This volume brings together for the first time a significant number of Reid's manuscript papers on natural history, physiology and materialist metaphysics. An important contribution not only to Reid studies but also to our understanding of eighteenth-century science and its context.