Property dualism is enjoying a slight resurgence in popularity, these days; substance dualism, not so much. But it is not as easy as one might think to be a property dualist and a substance materialist. The reasons for being a property dualist support the idea that some phenomenal properties (or qualia) are as fundamental as the most basic physical properties; but what material objects could be the bearers of the qualia? If even some qualia require an adverbial construal (if they (...) are modifications of the thing that is conscious because of them, not properties of something else to which the subject of consciousness is related), then the property dualist can be driven to speculative forms of materialism none of which, at this point, looks more likely to be true than the more modest versions of emergent dualism defended by contemporary substance dualists. (shrink)

... dedicated to the timely publication of new work in metaphysics, broadly construed.

The accumulation of potentially toxic elements (PTEs) has raised public awareness due to harmful contamination to both human and marine creatures. This study was designed to determine the concentration of copper (Cu), zinc (Zn), cadmium (Cd), and nickel (Ni) in the intestine, kidney, muscle, gill, and liver tissues of local commercial edible fish, fourfinger threadfin (Eleutheronema tetradactylum), and black pomfret (Parastromateus niger) collected from Morib (M) and Kuala Selangor (KS). Among the studied PTEs, Cu and Zn were essential elements to (...) regulate body metabolism with certain dosages required while Cd and Ni were considered as non-essential elements that posed chronic and carcinogenic risk. The concentration of PTEs in fish tissue samples was analyzed using flame atomic absorption spectrometry (F-AAS). By comparing the concentration of PTEs in fish tissues as a bioindicator, the environmental risk of Morib was more serious than Kuala Selangor because both fish species collected from Morib resulted in a higher PTEs concentration. For an average 62 kg adult with a fish ingestion rate (FIR) of 0.16 kg/person/day in Malaysia, the estimated weekly intake (EWI) of Cd from the consumption of E. tetradactylum (M: 0.0135 mg/kg; KS: 0.0134 mg/kg) and P. niger (M: 0.0140 mg/kg; KS: 0.0132 mg/kg) had exceeded the provisional tolerable weekly intake (Cd: 0.007 mg/kg) established by the Joint FAO/WHO Expert Committee on Food Additives (JECFA) and oral reference dose (ORD) values of Cd (0.001 mg/kg/day) as provided by the United States Environmental Protection Agency (USEPA) regional screening level, thus it posed chronic risks for daily basis consumption. Besides, the value of the carcinogenic risk of Cd (0.7−3 to 0.8−3) and Ni (0.5−3 to 0.6−3) were in between the acceptable range (10−6 to 10−4) of the health index that indicates a relatively low possibility cancer occurrence to the consumers in both Morib and Kuala Selangor. This study recommended FIR to be 0.80 kg/person/day to reduce the possibility of posing chronic and carcinogenic risks while at the same time obtaining the essential nutrients from the fish. (shrink)

This chapter contains section titled: Identity and Dynamical Space The Mandelbrot Set Dynamic Diversity Diversity and Community Control of Boundaries The Prospects.

Gentzen’s sequent calculi LK and LJ are landmark proof systems. They identify the structural rules of weakening and contraction as notable inference rules, and they allow for an elegant statement and proof of both cut elimination and consistency for classical and intuitionistic logics. Among the undesirable features of those sequent calculi is that their inferences rules are low-level and frequently permute over each other. As a result, large-scale structures within sequent calculus proofs are hard to identify. In this paper, we (...) present a different approach to designing a sequent calculus for classical logic. Starting with Gentzen’s LK proof system, we examine the proof search meaning of his inference rules and classify those rules as involving either don’t care nondeterminism or don’t know nondeterminism. Based on that classification, we design the focused proof system LKF in which inference rules belong to one of two phases of proof construction depending on which flavor of nondeterminism they involve. We then prove that the cut rule and the general form of the initial rule are admissible in LKF. Finally, by showing that the inference rules for LK are all admissible in LKF, we can give a relative completeness proof for LKF provability with respect to LK provability. We shall also apply these properties of the LKF proof system to establish other meta-theoretic properties of classical logic, including Herbrand’s theorem. (shrink)

"I am delighted to offer my highest praise to Dean Cocking and Jeroen van den Hoven's brilliant new book, Evil Online. The confrontation between good and evil occupies a central place in the challenges facing our human nature, and this creative investigation into the spread of evil by means of all-powerful new technologies raises fundamental questions about our morality and values. Cocking and Van den Hoven's account of the moral fog of evil forces us to face both the demons (...) within each of us as well as the demons all around us. In the end, we are all enriched by their perceptive analyses." —Phil Zimbardo, Professor Emeritus of Psychology, Stanford University Principal Investigator, Stanford Prison Experiment "The internet offers new and deeply concerning opportunities for immorality, much of it shocking and extreme. This volume explains with great insight and clarity the corrupting nature of the internet and the moral confusion it has produced. It will play a vital role in the growing debate about how to balance the benefits of the internet against the risks it poses to all of us. Evil Online is an excellent book." —Roger Crisp, Professor of Moral Philosophy, University of Oxford We now live in an era defined by the ubiquity of the internet. From our everyday engagement with social media to trolls on forums and the emergence of the dark web, the internet is a space characterized by unreality, isolation, anonymity, objectification, and rampant self-obsession—the perfect breeding ground for new, unprecedented manifestations of evil. Evil Online is the first comprehensive analysis of evil and moral character in relation to our increasingly online lives. Chapters consider traditional ideas around the phenomenon of evil in moral philosophy and explore how the dawn of the internet has presented unprecedented challenges to older theoretical approaches. Cocking and Van den Hoven propose that a growing sense of moral confusion—moral fog—pushes otherwise ordinary, normal people toward evildoing, and that values basic to moral life such as autonomy, intimacy, trust, and privacy are put at risk by online platforms and new technologies. This new theory of evildoing offers fresh insight into the moral character of the individual, and opens the way for a burgeoning new area of social thought. A comprehensive analysis of an emerging and disturbing social phenomenon, Evil Online examines the morally troubling aspects of the internet in our society. Written not only for academics in the fields of philosophy, psychology, information science, and social science, Evil Online is accessible and compelling reading for anyone interested in understanding the emergence of evil in our digitally-dominated world. (shrink)

The ‘friends of temporal parts’ and their opponents disagree about how things persist through time. The former, who hold what is sometimes called a ‘4D’ theory of persistence, typically claim that all objects that last for any period of time are spread out through time in the same way that spatially extended objects are spread out through space — a different part for each region that the object fills. David Lewis calls this manner of persisting ‘perdurance’. The opposing, ‘3D’ theory (...) has it that at least some objects do not persist in this manner; they ‘endure’ through time by ‘being wholly present at more than one time’.1 A related dispute pits ‘presentists’ against ‘non-presentists’. Presentists hold that the only things that really exist are those that exist now, at the present moment; and nonpresentists believe in something like a ‘block-universe’ in which non-simultaneous objects and events nevertheless co-exist (in a tenseless or non-temporal sense). Of late, the relations between these four positions have come under considerable scrutiny.2 As Ned Markosian has pointed out, it would be surprising if commitment to a perdurance or endurance theory of persistence automatically foreclosed one’s options in the presentism—non-presentism debate. But, says Markosian, that is just what the standard formulations of the perdurance and endurance theories imply.3 David Lewis has set the terms of the debate; in his usage, someone who thinks that all persisting objects endure would be said to hold the following. (shrink)

We cannot escape Indiana Jones! (Not that we would want to, of course.) Harrison Ford deserves credit for the character's popularity. His ability to subtly play up Indy's foibles while playing down the character's heroism, makes Indiana Jones relatable. Of course, Lucas and the screenwriters are also responsible, as they magnificently depict Indy battling antagonists seeking to possess mystical objects for world domination. But Indy is no mere action hero. He also struggles with unrequited love that lingers for decades, an (...) estrangement from his over-bearing father that lasts just as long, and a life-long obsession with regaining an important object unfairly taken from him. As we know, Indy doesn't always choose wisely, and if the Young Indiana Jones Chronicles are to be trusted, he made many missteps in his youth on the way to becoming the hero we know and love. Indy loses a fight as often as he wins, and when he wins, he doesn't always fight fairly. In fact, he stumbles so often, one might wonder why he persists decade after decade toward his goals. He's not getting any younger. What's the point? And, as he inexplicably trudges on, he-in the four films and various graphic novels-has many alleged encounters with the supernatural. He's not a religious person (at all), so what should he make of those? Should he take the leap of faith and become a believer? While we often see him conducting his highly unconventional fieldwork, spending an unusual amount of time in caves, he cannot completely ignore his "day job" teaching undergraduates and aiding their pursuit of knowledge. But why should archaeologists strive to put artifacts in a museum, or search for "fact," but not "truth" (and who is Dr. Tyree, anyway)? The Indiana Jones character is expressive of the human condition, vividly illuminating our struggles and issues on the big screen. True, we don't have John Williams's orchestra filling us with pride when we manage to do the right thing or play the part of the hero. Still, no one would blame you if you imagined Indy's theme blaring in the background while rising to meet a challenge! (shrink)

CLIMATE EDUCATION FOR WOMEN AND YOUTH Around the world, people still lack basic awareness and understanding of the drivers and impact of climate change, as well as options for reducing carbon emissions and adapting to the climate change impacts. In addition, climate change impacts are not equally distributed. Gender inequalities and development gaps increase the impacts of climate change for women and young people. Driving climate action through educating and empowering women and youth could lead to building resilience within communities. (...) Thus, education and training are crucial to building capacity and enhance their ability to tackle climate change, especially as most of them have no access to information and resources related to climate action. Despite the evidence that education has a strong role to play in both climate adaptation and mitigation, the global education community has done little to advance wide-scale education efforts. Solid, coherent policies and plans are the bedrock on which to build sustainable education systems, achieve educational development goals and contribute effectively to lifelong learning. At a time of growing inequality, closing the gaps in access to quality education requires a long-term vision, engagement, and effective collaboration between various stakeholders. To do that, it’s critical to develop climate educational guides for developing countries that include the most important elements about formal and informal education for women and young people, as well as relevant learning materials and tools. Establishing a climate education coalition provides a forum for expert discussion and unlocks the potential of collaborative work. Embedding climate topics into formal and non-formal education is another priority area for action that could contribute to increasing climate awareness among youth. Community-level climate education projects and initiatives could be a powerful tool for educating and empowering women. Thus, governments and local authorities should ensure funds and provide resources for these projects and initiatives. (shrink)

E-waste is one of the most pressing challenges of our time, yet it is often ignored, especially in Southeast Asia. The “tsunami of e-waste” in the region has been putting our lives and our environment at risk. With the extensive use of electrical and electronic devices, we are also contributing to harming the environment and quickening the climate change by producing and discarding e-waste. Youths are among major users of electronic devices, and hunger for upgraded and newer versions. -/- However, (...) there is still a lack of sensitization on e-waste management issues in the Southeast Asia region. Why should not the young people be pioneers in educating this challenge to the young public? Our FRE-E-WASTE project team is firm in our belief that youths should take the lead in bringing to light this aspect of climate justice, to the best of our ability. -/- Implemented by a group of ASEAN environmental enthusiasts, STEP Forward Education and supported by the U.S. Department of State and the Young Southeast Asian Leaders Initiative (YSEALI), FRE-E-WASTE Project seeks to bring together a group of Southeast Asian environmental enthusiasts aged between 18 and 35 to connect and collaborate on e-waste issues in the region and eventually to create a toolkit about e-waste for the Southeast Asia region. (shrink)

The joint effort by the U.S. government and the political elite of Puerto Rico to industrialize the island created increased demand for female labor and a decline in the number of jobs traditionally held by men. The authors examine whether women's labor force participation in the formal sector responds to improving opportunities for women, declining opportunities for men, or the household's changing opportunity structures. Specifically, they examine a woman's return to work after the birth of her first child as the (...) initial point of conflict between productive and reproductive work. The data used in these analyses are from the 1982 Puerto Rican Fertility and Family Planning Assessment, an islandwide, representative sample of never-married and ever-married women between the ages of fifteen and forty-nine. The authors estimate a series of nested logistic regression models to evaluate the influence of occupational expansion or contraction on the timing of return to work after the first birth. Their findings offer selective support for the idea that women's lives are affected primarily by the occurrence of growing labor demand for women's labor. (shrink)

Si on analyse les stratégies publicitaires de la plateforme Netflix il devient possible de mieux comprendre le modèle de spectateur que celles-ci façonnent. En étudiant la comparaison avec la chaine câblée HBO mais aussi le matériel de la campagne promotionnelle TV Got Better, nous observons les promesses que Netflix adresse à son public potentiel (plénitude, participation, prestige et personnalisation) ainsi que son encouragement des pratiques de visionnement « en rafale ».

Online science and engineering ethics (SEE) education can support appropriate goals for SEE and the highly interactive pedagogy that attains those goals. Recent work in moral psychology suggests pedagogical goals for SEE education that are surprisingly similar to goals enunciated by several panels in SEE. Classroom-based interactive study of SEE cases is a suitable method to achieve these goals. Well-designed cases, with appropriate goals and structure can be easily adapted to courses that have online components. It is less clear that (...) exclusively online methods can support the wide range of goals necessary to good moral pedagogy in SEE, though there seems no a priori reason to rule this out. Only careful, goal-based assessment of online case study SEE teaching can resolve this question. (shrink)

We present a compact sequent calculus LKU for classical logic organized around the concept of polarization. Focused sequent calculi for classical, intuitionistic, and multiplicative–additive linear logics are derived as fragments of the host system by varying the sensitivity of specialized structural rules to polarity information. We identify a general set of criteria under which cut-elimination holds in such fragments. From cut-elimination we derive a unified proof of the completeness of focusing. Furthermore, each sublogic can interact with other fragments through cut. (...) We examine certain circumstances, for example, in which a classical lemma can be used in an intuitionistic proof while preserving intuitionistic provability. We also examine the possibility of defining classical–linear hybrid logics. (shrink)

Researchers often lack the necessary data to credibly estimate racial discrimination in policing. In particular, police administrative records lack information on civilians police observe but do not investigate. In this article, we show that if police racially discriminate when choosing whom to investigate, analyses using administrative records to estimate racial discrimination in police behavior are statistically biased, and many quantities of interest are unidentified—even among investigated individuals—absent strong and untestable assumptions. Using principal stratification in a causal mediation framework, we derive (...) the exact form of the statistical bias that results from traditional estimation. We develop a bias-correction procedure and nonparametric sharp bounds for race effects, replicate published findings, and show the traditional estimator can severely underestimate levels of racially biased policing or mask discrimination entirely. We conclude by outlining a general and feasible design for future studies that is robust to this inferential snare. (shrink)

During its forty year lifespan, string theory has always had the power to divide, being called both a 'theory of everything' and a 'theory of nothing'. Critics have even questioned whether it qualifies as a scientific theory at all. This book adopts an objective stance, standing back from the question of the truth or falsity of string theory and instead focusing on how it came to be and how it came to occupy its present position in physics. An unexpectedly rich (...) history is revealed, with deep connections to our most well-established physical theories. Fully self-contained and written in a lively fashion, the book will appeal to a wide variety of readers from novice to specialist. (shrink)

Chuck Chakrapani ABSTRACT: Stoic Minimalism may be described as ‘just enough Stoicism.’ Just enough for what? Just enough to lead the good life. Just enough to cope with the stress of modern life. Just enough to not be rattled by the constant changes that characterize the times we live in. Just enough to be resilient ….

Traditional social worlds enable plural modes of self‐expression and communication across both public and private realms. Our identity involves a variety of aspects of self. Moreover, plural and conflicting aspects of self are often presented within the context of one relationship, role, or encounter. The presentation of less chosen aspects of our selves often also provides the object for the expression of certain relational aspects of respect for one another's privacy. Self‐presentation and shared activity in many online social worlds can (...) also enable autonomy and privacy. The online revolutions in access to information and to one another have provided unprecedented opportunities to expand our knowledge, to pursue our social and working lives, and to carry on all sorts of interests and activities. One specific example of how some of our fears about online evils have been claimed to be exaggerated and misguided concerns fears of risks to our children from online sexual predators. (shrink)

In Morality and Ethics of War, which includes a foreword by Major General Susan Coyle, ethicist Deane-Peter Baker goes beyond existing treatments of military ethics to address a fundamental problem: the yawning gap that exists between the diverse moral frameworks defining personal identity in a multicultural society on the one hand, and the professional military ethic on the other. Baker argues that overcoming this chasm is essential to minimising the ethical risks that can lead to operational and strategic failure for (...) military forces engaged in today's complex conflict environment. He contends that spanning the gap is vital in preventing moral injury from befalling the nation's uniformed servants. Drawing on a revised account of what he calls 'the Just War Continuum', Baker develops a bridging framework that combines conceptual clarity and rigour with insights from cutting edge psychological research and creates a practical means for military leaders to negotiate the moral chasm in military affairs. (shrink)

This book offers the first introduction to a major Japanese philosophical movement through the interests and arguments of its founder, Nishida Kitaro (1870-1945), his successor, Tanabe Hajime (1885-1962), and student-turned-critic, Tosaka Jun (1900-1945). Focusing on their contributions to thinking about place, space, and dialectics, this concise introduction brings these influential thinkers to life by connecting their work to issues still debated in the philosophy of science and physics today. Beginning with an overview of the reception of quantum physics and relativity (...) theory in Japan and concluding with an account of the direct relevance of the Kyoto School to the development of world philosophy in a posthuman age, each clearly-written chapter engages historical contexts and includes: · Carefully-chosen excerpts and original translations of Nishida, Tanabe, and Tosaka · Focus boxes explaining complex concepts and problems of contextualization. A timeline, glossary and index. Further reading lists featuring relevant and significant articles and books in English. This introduction is an ideal starting point for students and lecturers looking to become better acquainted with three central Japanese philosophers and learn why their work impacts our current thinking about science. (shrink)

Computational complexity theory is a subfield of computer science originating in computability theory and the study of algorithms for solving practical mathematical problems. Amongst its aims is classifying problems by their degree of difficulty — i.e., how hard they are to solve computationally. This paper highlights the significance of complexity theory relative to questions traditionally asked by philosophers of mathematics while also attempting to isolate some new ones — e.g., about the notion of feasibility in mathematics, the $\mathbf{P} \neq \mathbf{NP}$ (...) problem and why it has proven hard to resolve, and the role of non-classical modes of computation and proof. (shrink)

State and civil society -- Empire without state -- Politics of life -- Saint Foucault -- Blood-dried codes -- The state of immanence -- Virtual state-making -- When society prevails -- Political and economic theology -- Foucault's apologia of neoliberalism.

Hegel's Philosophy of Right was his last systematic work and the most complete statement of his mature views on ethical and political philosophy. It explores the relationships between three distinct conceptions of human freedom: persons as possessing contract rights, subjects as reflective moral agents, and individuals as members of an ethical community. It strongly influenced the early Marx and with the rise of debates over liberalism and communitarianism in the latter half of the twentieth century. In this volume an outstanding (...) line up of contributors examine the nature and impact of Hegel's Philosophy of Right. A diverse array of topics is examined, ranging from Hegel's account of rights, freedom, the state and history to some hitherto relatively overlooked topics such as Hegel and Luther, art and nationality and Hegel and the market. Hegel's Philosophy of Right: Critical Perspectives on Freedom and History will be valuable reading for scholars of Hegel, nineteenth-century German philosophy, political philosophy and history of political thought. (shrink)

Although Newman felt that the conferral of the cardinalate lifted the cloud of suspicion forever, soon after his death his reputation came under another cloud: Modernism. This essay shows how Modernist concerns about the philosophical grounding of faith, Biblical interpretation, and the nature of dogmatic statements as presented by Pierre Batiffol and Marcel Hébert counter-pointed Newman’s idea of the development of doctrine.

We combine intuitionistic logic and classical logic into a new, first-order logic called polarized intuitionistic logic. This logic is based on a distinction between two dual polarities which we call red and green to distinguish them from other forms of polarization. The meaning of these polarities is defined model-theoretically by a Kripke-style semantics for the logic. Two proof systems are also formulated. The first system extends Gentzenʼs intuitionistic sequent calculus LJ. In addition, this system also bears essential similarities to Girardʼs (...) LC proof system for classical logic. The second proof system is based on a semantic tableau and extends Dragalinʼs multiple-conclusion version of intuitionistic sequent calculus. We show that soundness and completeness hold for these notions of semantics and proofs, from which it follows that cut is admissible in the proof systems and that the propositional fragment of the logic is decidable. (shrink)

PurposeThe purpose of this paper is to present a four component model of ethical behavior (PRIMES) that integrates literature in moral psychology, computing ethics, and virtue ethics as informed by research on moral exemplars in computing. This is part 1 of a two‐part contribution.Design/methodology/approachThis psychologically based and philosophically informed model argues that moral action is: grounded in relatively stable PeRsonality characteristics (PR); guided by integration of morality into the self‐system; shaped by the context of the surrounding moral ecology; and facilitated (...) by morally relevant skills and knowledge (S).FindingsThe model seeks to explain the daily successful (and unsuccessful) performance of moral action by computing professionals and to provide groundwork for a pedagogy that emphasizes ethically effective performance.Practical implicationsThe model has significant implications for how ethical action might be taught to computer professionals and other design professionals. It also makes recommendations about what is needed to measure to construct a complete picture of sustained ethical action in a profession.Originality/valueMost accepted models of ethical behavior are unidimensional, emphasizing either principled reasoning or a simplistic model of integrity/character. This model brings together a variety of disparate literatures in the light of its emphasis on sustained moral action in the profession. It thereby provides researchers and educators with a picture of what is needed to construct a complete understanding of moral action in the profession. (shrink)

Part intellectual history, part critical theory, The Last Man Takes LSD challenges the way we think about both Michel Foucault and modern progressive politics. One fateful day in May 1975, Foucault dropped acid in the southern California desert. In letters reproduced here, he described it as among the most important events of his life, one which would lead him to completely rework his History of Sexuality. That trip helped redirect Foucault's thought and contributed to a tectonic shift in the intellectual (...) life of the era. He came to reinterpret the social movements of May '68 and reposition himself politically in France, embracing anti-totalitarian currents and becoming a critic of the welfare state. Mitchell Dean and Daniel Zamora examine the full historical context of the turn in Foucault's thought, which included studies of the Iranian revolution and French socialist politics, through which he would come to appreciate the possibilities of autonomy offered by a new force on the French political scene that was neither of the left nor the right: neoliberalism. (shrink)

PurposeThe purpose of this paper is to present a four component model of ethical behavior that integrates literature in moral psychology, computing ethics, and virtue ethics as informed by research on moral exemplars in computing. This is part 2 of a two part contribution, part 1 having appeared in Vol. 6 No. 3.Design/methodology/approachThis psychologically based and philosophically informed model argues that moral action is grounded in relatively stable personality characteristics, guided by integration of morality into the self‐system, shaped by the (...) context of the surrounding moral ecology, and facilitated by morally relevant skills and knowledge.FindingsThe model seeks to explain the daily successful (and unsuccessful) performance of moral action by computing professionals and to provide groundwork for a pedagogy that emphasizes ethically effective performance.Practical implicationsThe model has significant implications for how ethical action to computer professionals and other design professionals might be taught. It also makes recommendations about what need to be measured to construct a complete picture of sustained ethical action in a profession.Originality/valueMost accepted models of ethical behavior are unidimensional, emphasizing either principled reasoning or a simplistic model of integrity/character. This model brings together a variety of disparate literatures in the light of its emphasis on sustained moral action in the profession. It thereby provides researchers and educators with a picture of what is needed to construct a complete understanding of moral action in the profession. (shrink)

Philosophy, science, and history -- Logic and philosophy of science -- Demarcation and the scientific method -- The nature of scientific theories.

The central dogma of female reproductive biology has long held that oogenesis ceases prior to birth in mammals. During the first half of the last century, there was much debate about whether this was the case or whether oogenesis continued in the postnatal ovary. A report in 1951 effectively put an end to this debate and laid the foundation for the dogma. A new paper by Johnson et al. (2004)1 resurrects the debate over whether postnatal oogenesis occurs in the mammalian (...) ovary. If confirmed, this would have tremendous impact on issues related to female fertility and reproductive longevity. BioEssays 26:829–832, 2004. © 2004 Wiley Periodicals, Inc. (shrink)

Interpreting physical theories -- General concepts of physics -- Symmetries in physics -- Getting philosophy from symmetry -- Further adventures in space and time -- Linking micro to macro -- Quantum philosophy -- On the edge : a snapshot of advanced topics.

Silent gesture is not considered to be linguistic, on par with spoken and sign languages. It is claimed that silent gestures, unlike language, represent events holistically, without compositional structure. However, recent research has demonstrated that gesturers use consistent strategies when representing objects and events, and that there are behavioral and clinically relevant limits on what form a gesture may take to effect a particular meaning. This systematicity challenges a holistic interpretation of silent gesture, which predicts that there should be no (...) stable form‐meaning correspondence across event representations. Here, we demonstrate to the contrary that untrained gesturers systematically manipulate the form of their gestures when representing events with and without a theme (e.g., Someone popped the balloon vs. Someone walked), that is, transitive and intransitive events. We elicited silent gestures and annotated them for manual features active in coding transitivity distinctions in sign languages. We trained linear support vector machines to make item‐by‐item transitivity predictions based on these features. Prediction accuracy was good across the entire dataset, thus demonstrating that systematicity in silent gesture can be explained with recourse to subunits. We argue that handshape features are constructs co‐opted from cognitive systems subserving manual action production and comprehension for communicative purposes, which may integrate into the linguistic system of emerging sign languages. We further suggest that nonsigners tend to map event participants to each hand, a strategy found across genetically and geographically distinct sign languages, suggesting the strategy's cognitive foundation. (shrink)