Pseudorecursive varieties 457) exhibit a lack of recursive uniformity, expressing the failure of universal and existential quantifiers to reverse. Several examples are given of personal encounters with infeasible or errant quantifier reversal. Results strengthening and applying pseudorecursiveness are followed by the study of a property of spectra that is not uniform. These foreshadow an abstraction of this notion and its integration with the algebraic and computational studies—steps that may eventually help explicate Tarski's claim that recursively enumerable, nonrecursive but pseudorecursive equational (...) theories are nonetheless decidable. (shrink)

The Church-Turing Thesis (CTT) is often paraphrased as ``every computable function is computable by means of a Turing machine.'' The author has constructed a family of equational theories that are not Turing-decidable, that is, given one of the theories, no Turing machine can recognize whether an arbitrary equation is in the theory or not. But the theory is called pseudorecursive because it has the additional property that when attention is limited to equations with a bounded number of variables, one obtains, (...) for each number of variables, a fragment of the theory that is indeed Turing-decidable. In a 1982 conversation, Alfred Tarski announced that he believed the theory to be decidable, despite this contradicting CTT. The article gives the background for this proclamation, considers alternate interpretations, and sets the stage for further research. (shrink)

Rousseau’s account of the “legislator” or “lawgiver” is commonly regarded as one of the most far-fetched, ominous, and baffling parts of his teaching in the Social Contract. In brief, Rousseau’s lawgiver seems to be a proto-totalitarian figure whose self-appointed mission is to found a political community by “denaturing” people at a single stroke and who may be a mere figment of Rousseau’s overheated imagination. Accordingly, this part of the Social Contract threatens to make a mockery of Rousseau’s claim to be (...) “taking men as they are and laws they can be,” as well as his claim that the combination of “ freedom and equality” is “the greatest good” in the civil state. Following and extending Rousseau’s own method of teaching by examples, however, this essay argues that Benjamin Franklin’s influence over the American republic—especially through his posthumous Autobiography—offers a prosaic example of the apparently fantastical phenomenon sketched by Rousseau. In fact, I argue that Franklin’s case corresponds more fully to Rousseau’s description than do any of Rousseau’s own examples (such as Moses, Lycurgus, and Numa) and that Franklin showed in practice what Rousseau suggested in theory: that a lawgiver can succeed without relying on coercion and without undercutting the equality that underlies a just society. Franklin’s denaturing influence, I suggest, has been crucial for the durability of republicanism in the United States, given the country’s size and diversity. (shrink)

The 18th century was a wealth of knowledge, exploration and rapidly growing technology and expanding record-keeping made possible by advances in the printing press. In its determination to preserve the century of revolution, Gale initiated a revolution of its own: digitization of epic proportions to preserve these invaluable works in the largest archive of its kind. Now for the first time these high-quality digital copies of original 18th century manuscripts are available in print, making them highly accessible to libraries, undergraduate (...) students, and independent scholars. Western literary study flows out of eighteenth-century works by Alexander Pope, Daniel Defoe, Henry Fielding, Frances Burney, Denis Diderot, Johann Gottfried Herder, Johann Wolfgang von Goethe, and others. Experience the birth of the modern novel, or compare the development of language using dictionaries and grammar discourses. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to insure edition identification: ++++ British Library T126964 Anonymous. By Benjamin Franklin. Only 100 copies printed. London: printed in the year, 1725. 32p.; 8°. (shrink)

Whether or not quantum physics can account for molecular structure is a matter of considerable controversy. Three of the problems raised in this regard are the problems of molecular structure. We argue that these problems are just special cases of the measurement problem of quantum mechanics: insofar as the measurement problem is solved, the problems of molecular structure are resolved as well. In addition, we explore one consequence of our argument: that claims about the reduction or emergence of molecular structure (...) cannot be settled independently of the choice of a particular resolution to the measurement problem. Specifically, we consider how three standard putative solutions to the measurement problem inform our under- standing of a molecule in isolation, as well as of chemistry’s relation to quantum physics. (shrink)

Community Partnered Participatory Research is grounded in the ethical principle of respect for persons participating in the research enterprise. The critical importance of respect for person...

The gradual secularization of European society and culture is often said to characterize the development of the modern world, and the early Italian humanists played a pioneering role in this process. Here Benjamin G. Kohl and Ronald G. Witt, with Elizabeth B. Welles, have edited and translated seven primary texts that shed important light on the subject of "civic humanism" in the Renaissance.Included is a treatise of Francesco Petrarca on government, two representative letters from Coluccio Salutati, Leonardo Bruni's panegyric (...) to Florence, Francesco Barbaro's letter on "wifely" duty, Poggio Bracciolini's dialogue on avarice, and Angelo Poliziano's vivid history of the Pazzi conspiracy. Each translation is prefaced by an essay on the author and a short bibliography. The substantial introductory essay offers a concise, balanced summary of the historiographcal issues connected with the period. (shrink)

We are immersed within an odorous sea of chemical currents that we parse into individual odors with complex structures. Odors have been posited as determined by the structural relation between the molecules that compose the chemical compounds and their interactions with the receptor site. But, naturally occurring smells are parsed from gaseous odor plumes. To give a comprehensive account of the nature of odors the chemosciences must account for these large distributed entities as well. We offer a focused review of (...) what is known about the perception of odor plumes for olfactory navigation and tracking, which we then connect to what is known about the role odorants play as properties of the plume in determining odor identity with respect to odor quality. We end by motivating our central claim that more research needs to be conducted on the role that odorants play within the odor plume in determining odor identity. (shrink)

Mathematicians often speak of conjectures as being confirmed by evidence that falls short of proof. For their own conjectures, evidence justifies further work in looking for a proof. Those conjectures of mathematics that have long resisted proof, such as the Riemann hypothesis, have had to be considered in terms of the evidence for and against them. In recent decades, massive increases in computer power have permitted the gathering of huge amounts of numerical evidence, both for conjectures in pure mathematics and (...) for the behavior of complex applied mathematical models and statistical algorithms. Mathematics has therefore become (among other things) an experimental science (though that has not diminished the importance of proof in the traditional style). We examine how the evaluation of evidence for conjectures works in mathematical practice. We explain the (objective) Bayesian view of probability, which gives a theoretical framework for unifying evidence evaluation in science and law as well as in mathematics. Numerical evidence in mathematics is related to the problem of induction; the occurrence of straightforward inductive reasoning in the purely logical material of pure mathematics casts light on the nature of induction as well as of mathematical reasoning. (shrink)

Many philosophers of science are ontologically committed to a lush rainforest of special science entities ), but are often reticent about the criteria that determine which entities count as real. On the other hand, the metaphysics literature is much more forthcoming about such criteria, but often links ontological commitment to irreducibility. We argue that the irreducibility criteria are in tension with scientific realism: for example, they would exclude viruses, which are plausibly theoretically reducible and yet play a sufficiently important role (...) in scientific accounts of the world that they should be included in our ontology. In this paper, we show how the inhabitants of the rainforest can be inoculated against the eliminative threat of reduction: by demonstrating that they are emergent. According to our account, emergence involves a screening off condition as well as novelty. We go on to demonstrate that this account of emergence, which is compatible with theoretical reducibility, satisfies common intuitions concerning what should and shouldn't count as real: viruses are emergent, as are trouts and turkeys, but philosophically gerrymandered objects like trout-turkeys do not qualify. (shrink)

Mathematicians often speak of conjectures as being confirmed by evidence that falls short of proof. For their own conjectures, evidence justifies further work in looking for a proof. Those conjectures of mathematics that have long resisted proof, such as the Riemann hypothesis, have had to be considered in terms of the evidence for and against them. In recent decades, massive increases in computer power have permitted the gathering of huge amounts of numerical evidence, both for conjectures in pure mathematics and (...) for the behavior of complex applied mathematical models and statistical algorithms. Mathematics has therefore become (among other things) an experimental science (though that has not diminished the importance of proof in the traditional style). We examine how the evaluation of evidence for conjectures works in mathematical practice. We explain the (objective) Bayesian view of probability, which gives a theoretical framework for unifying evidence evaluation in science and law as well as in mathematics. Numerical evidence in mathematics is related to the problem of induction; the occurrence of straightforward inductive reasoning in the purely logical material of pure mathematics casts light on the nature of induction as well as of mathematical reasoning. (shrink)

Recent Darwin scholarship has provided grounds for recognising the Origin as a literary as well as a scientific achievement. While Darwin was an acute observer, a gifted experimentalist and indefatigable theorist, this essay argues that it was also crucial to his impact that the Origin transcended the putative divide between the scientific and the literary. Analysis of Darwin’s development as a writer between his journal-keeping on HMS Beagle and his construction of the Origin argues the latter draws on the pattern (...) of the Romantic or Kantian sublime. The Origin repeatedly uses strategies which challenge the natural-theological appeal to the imagination in conceiving nature. Darwin’s sublime coaches the Origin’s readers into a position from which to envision nature that reduces and contains its otherwise overwhelming complexity. As such, it was Darwin’s literary achievement that enabled him to fashion a new ‘habit of looking at things in a given way’ that is the centrepiece of the scientific revolution bearing his name. (shrink)

Various formalisms for recasting quantum mechanics in the framework of classical mechanics on phase space are reviewed and compared. Recent results in stochastic quantum mechanics are shown to avoid the difficulties encountered by the earlier approach of Wigner, as well as to avoid the well-known incompatibilities of relativity and ordinary quantum theory. Specific mappings among the various formalisms are given.

_The Routledge Companion to Environmental Ethics_ is comprised of sixty original essays, which focus on how ethical questions intersect with real and pressing policy issues. Rather than overviewing abstract conceptual categories, the authors focus on specific controversies involving the environment. Clearly written contributions on Fossil Fuels, Urban Sustainability, Novel Ecosystems, and many other subjects make accessible these issues‘ empirical and political dimensions as well as their theoretical underpinnings. Written to be accessible for undergraduates and general readers, but comprehensive enough to (...) be a useful reference work for researchers in a variety of related fields, it promises to be an invaluable resource for better understanding the ethical landscape of our environmental world. (shrink)

Gadamer has written several powerful studies of Platonic dialectic. His emphasis on shared understanding, the fusing of horizons and other hermeneutic notions are partially drawn from a study of Plato’s elenctic dialogues. However, Socrates in Gorgias makes a claim about the imperative of self-refutation that not only complicates our understanding of Socratic method, but Gadamer’s reading of it as well. This article is meant to explore just how the imperative of self-refutation causes difficulty for Gadamer’s understanding of dialectic, especially his (...) distinction between authentic and inauthentic dialectic. After considering the nature of ‘refutation’, this article will examine whether Gadamer’s notions of shared understanding, the ‘facts of the matter’, and self-understanding help us to resolve this problem. It shall be concluded that the teacher must take any refutations of his/her own views seriously, but has no special obligation to refute (introspectively) any of their own views, even those beliefs, theories, principles or criteria that enable him to guide the argument. (shrink)

Both children and adults predict the content of upcoming language, suggesting that prediction is useful for learning as well as processing. We present an alternative model which can explain prediction behaviour as a by-product of language learning. We suggest that a consideration of language acquisition places important constraints on Pickering & Garrod's (P&G's) theory.

Shadow of the Other is a discussion of how the individual has two sorts of relationships with an "other"--other individuals. The first regards the other as a s work apart is her brilliant utilization of a systematic dialectical approach to her subject, always maintaining the delicate balance between opposing tensions: masculinity and femininity, subjectivity and objectivity, passivity and activity, love and aggression, fantasy and reality, modernism and postmodernism, the intrapsychic and the intersubjective. Benjamin s work apart is her brilliant (...) utilization of a systematic dialectical approach to her subject, always maintaining the delicate balance between opposing other as a mental repository fo unwanted characteristics cast from the self. Jessica benjamin shows the implications of this dual relationship for male/female hierarchy and offers a possibility for balancing the two. This book continues the author's well-known explorations of the themes of intersubjectivity and gender, taking up issues at the forefront of contemporary debates in feminist theory and psychoanalysis. (shrink)

Capps and Lederman, in a paper published in this journal in 2015, argued that, at the time, the dismal circumstances of the Ebola outbreak in West Africa was an opportunity to revisit public health responses to emergent infectious diseases. Using a One Health lens, they argued for an ecological perspective—one that looked to respond to zoonoses as an environmental as well as public health concern. Using Ebola virus disease as an example, they suggested shared immunity as a strategy to vaccinate (...) both humans and great apes. Since then, vaccination as a conservation strategy in this case has been debated and at least one great ape vaccination trial has been proposed: some, however, are less convinced of the ethical arguments to pursue vaccinating wild animals. Using this opportunity, we review Capps and Lederman’s arguments and directly respond to the plausible objections to them. (shrink)

“Free Will” is a philosophical term of art for a particular sort of capacity of rational agents to choose a course of action from among various alternatives. Which sort is the free will sort is what all the fuss is about. (And what a fuss it has been: philosophers have debated this question for over two millenia, and just about every major philosopher has had something to say about it.) Most philosophers suppose that the concept of free will is very (...) closely connected to the concept of moral responsibility. Acting with free will, on such views, is just to satisfy the metaphysical requirement on being responsible for one's action. (Clearly, there will also be epistemic conditions on responsibility as well, such as being aware—or failing that, being culpably unaware—of relevant alternatives to one's action and of the alternatives' moral significance.) But the significance of free will is not exhausted by its connection to moral responsibility. Free will also appears to be a condition on desert for one's accomplishments (why sustained effort and creative work are praiseworthy); on the autonomy and dignity of persons; and on the value we accord to love and friendship. (See Kane 1996, 81ff. and Clarke 2003, Ch.1.). (shrink)

Benjamin Barber is one of America's preeminent political theorists. He has been a significant voice in the continuing debate about the nature and role of democracy in the contemporary world. A Passion for Democracy collects twenty of his most important writings on American democracy. Together they refine his distinctive position in democratic theory. Barber's conception of "strong democracy" contrasts with traditional concepts of "liberal democracy," especially in its emphasis on citizen participation in central issues of public debate. These essays (...) critique the "thin representation" of liberal democracy and buttress the arguments presented in Barber's twelve books, most recently in his well-received Jihad vs. McWorld: How Globalism and Tribalism Are Re-shaping the World. In these pieces, Barber argues for participatory democracy without dependence on abstract metaphysical foundations, and he stresses the relationship among democracy and civil society, civic education, and culture. A Passion for Democracy is divided into four sections. In the first, "American Theory: Democracy, Liberalism, and Rights," Barber addresses issues of ongoing relevance to today's debates about the roots of participatory democracy, including individualism vs. community, the importance of consent, and the irrelevance of Marxism. Essays in the second section, "American Practice: Leadership, Citizenship, and Censorship" provide a "strong democracy" critique of American democratic practice. "Education for Democracy: Civic Education, Service, and Citizenship" applies Barber's theories to three related topics and includes his much-discussed essay "America Skips School." The final section, "Democracy and Technology: Endless Frontier or End of Democracy?" provides glimpses into a future that technology alone cannot secure for democracy. In his preface, Barber writes: "In these essays... I have been hard on my country. Like most ardent democrats, I want more for it than it has achieved, despite the fact that it has achieved more than most people have dared to want." This wide-ranging collection displays not only his passion for democracy, but also his unique perspective on issues of abiding importance for the democratic process. (shrink)

Radical virtue serves two distinct purposes: consolation in unfavorable circumstances, and prescription to achieve better ones. This paper maps out the theoretical nuances important for practical guidance. For a Stoic, radical virtue is a way to live well through environmental tragedy. For a consequentialist, it is an instrument to motivate us to combat climate change. For an Aristotelian, it is both. I argue that an Aristotelian approach fares the best, balancing the aim of external success with the aim of living (...) well through practical wisdom. This involves criticizing assumptions about living well that underlie behaviors that contribute to climate change. Some might object virtue theory suffers from application problems, and an Aristotelian approach suffers even more because it does not tell the virtuous person how to negotiate her aims. In response, Aristotelian revision starts with moral perception that adds valuable content by navigating through the messiness. (shrink)

This paper explores the prospects of radical hope for addressing the devastation of the Covid-19 pandemic. Hope is useful for conceptualizing the proper balance between too much fear and too little about our uncertain future. First, I describe the ethical challenge of the pandemic as a wicked problem. Because accepted ethical theories fail to motivate solutions, wicked problems pressure us to develop our value systems, exercise moral imaginations, and discover creative solutions. Second, I develop an Aristotelian account of radical hope, (...) drawing from ancient philosophy, virtue ethics, and recent climate ethics. Radical hope is a novel form of courage, which balances the goal of external success, that something good will emerge from the tragedy, against the goal of living well for its own sake through practical wisdom. I conclude by applying some lessons to our present situation. (shrink)

The currently leading cognitive theory of consciousness, Global Workspace Theory,1,2 postulates that the primary functions of consciousness include a global broadcast serving to recruit internal resources with which to deal with the current situation and to modulate several types of learning. In addition, conscious experiences present current conditions and problems to a "self" system, an executive interpreter that is identifiable with brain structures like the frontal lobes and precuneus.1Be it human, animal or artificial, an autonomous agent3 is said to be (...) functionally conscious if its control structure (mind) implements Global Workspace Theory and the LIDA Cognitive Cycle, which includes unconscious memory and control functions needed to integrate the conscious component of the system. We would therefore consider humans, many animals4 and even some virtual or robotic agents5,6 to be functionally conscious. Such entities may approach phenomenal consciousness, as found in human and other biological brains, as additional brain-like features are added.Here we argue that adding mechanisms to produce a stable, coherent perceptual field7 in a LIDA controlled mobile robot might provide a small but significant step toward phenomenal consciousness in machines.>8 We also propose that implementing several of the various notions of self in such a LIDA controlled robot may well prove another step toward phenomenal consciousness in machines. (shrink)

Hardly anyone disputes that discrimination can be a grave moral wrong. Yet this consensus masks fundamental disagreements about what makes something discrimination, as well as precisely why acts of discrimination are wrong. Benjamin Eidelson develops systematic answers to those two questions. He claims that discrimination is a form of differential treatment distinguished by its special connection to the differential ascription of some property to different people, and goes on to argue that what makes some cases of discrimination intrinsically wrongful (...) is that they manifest an attitude of disrespect for the personhood of those who are disfavored. He endeavors to specify what this attitude consists in, and to demonstrate how attending to its character can help us to better understand the moral dimensions of different forms of wrongful discrimination. The book concludes with an extended discussion of racial profiling in law enforcement. (shrink)

In this article I present a theory of what it is to be fair. I take my cue from Broome’s well known 1990 account of fairness. Broome’s basic thesis is that fairness is the proportional satisfaction of claims, and with this I am in at least partial agreement. But neither Broome nor anyone else (so far as I know) has laid down a theory of precisely what one must do in order to be fair. The theory offered here does just (...) this. (shrink)

While many theories of well-being are able to capture some of our central intuitions about well-being, e.g. avoiding alienation worries, they typically do so at the cost of not being able to capture others, e.g. explaining deprivation. However, both of these intuitions are important and any comprehensive theory of well-being ought to attempt to strike the best balance in responding to both concerns. In light of this, I develop and defend a theory of well-being which holds that our well-being depends, (...) in part, on the nature of our well-being qua person, a class whose members are defined by their possessing certain cognitive and volitional capacities including those capacities constitutive of autonomy. I argue that this theory of well-being is able to address concerns about alienation and deprivation, along with capturing the importance of autonomy to well-being, better than many popular subjective and objective theories of well-being. (shrink)

In this chapter I explore the possibility and prospects of what I’m calling reformed demonology, an extension of a reformed epistemology that includes belief in the Devil. I begin by characterizing reformed epistemology as denying the necessity of propositional evidence—via argument—for the positive epistemic status of a religious belief. I then turn to the influential reformed approaches of Alvin Plantinga and William Alston, seeing whether or not one can developed their Reformed approaches to beliefs about God to beliefs about the (...) Devil. For Plantinga, this question amounts to whether or not God could/would have created us with a faculty designed to produce beliefs about the Devil immediately. For Alston, this question becomes one as to whether one lives in a community such that direct (quasi)perceptual experience of the Devil is made possible. In each case, I suggest that we find neither a ‘yes’ nor ‘no’ answer: Plantinga’s epistemology hinges on what sort of aims God would have in creating us and Alston’s on what sort of epistemic communities there are as well as in which one finds oneself. So, on either view, a Reformed Demonology is possible. (shrink)

In this paper, the authors consider the idea of the public biobank governance framework with respect to the innovative paradigm of One Health. The One Health initiative has been defined as an integrative and interdisciplinary effort to improve the lives and well-being of human beings and non-human animals, as well as to preserve the environment. Here, we use this approach as a starting presumption with respect to institutional design. We examine the theoretical and legal framework underlying the concept of biobanking (...) that, being public orientated, is _for the public good_. We suggest that this account of research practice does not ethically correlate with One Health principles. Instead, we argue that One Health requires a model of biobanking that is based on universal goods, that is, goods that serve human beings as well as non-human animals and the environment, and which we define in detail. Our purpose is to begin a discussion on how One Health principles might be implemented in health initiatives. (shrink)

The book contends that contrary to accepted interpretation, moral intuition, rather than any other form of reasoning, least of all formal logic, is the moral method found in the ethics of Aristotle, Aquinas, Kant and Dewey - the first four chapters of the book. These four thinkers represent a dialectical selection of ethical relativism and absolutism as well as a chronological succession from ancient to contemporary thought. The fifth and concluding chapter is a major presentation of the author's thesis on (...) moral intuition as the exact antidote against the dilemma ethics approach, which is widely used today with rapidly diminishing effect and interest. This chapter is a detailed illustration of how moral intuition works out concretely in the lived world. It stresses the unity of moral experience even as this is clouded over by our relatively fewer, but overdramatized, confrontations on some moral issues. (shrink)

In his article on The Liabilities of Mobility, Merker asserts that “Consciousness presents us with a stable arena for our actions—the world …” and argues for this property as providing evolutionary pressure for the evolution of consciousness. In this commentary, I will explore the implications of Merker’s ideas for consciousness in artificial agents as well as animals, and also meet some possible objections to his evolutionary pressure claim.

The currently leading cognitive theory of consciousness, Global Workspace Theory,1,2 postulates that the primary functions of consciousness include a global broadcast serving to recruit internal resources with which to deal with the current situation and to modulate several types of learning. In addition, conscious experiences present current conditions and problems to a "self" system, an executive interpreter that is identifiable with brain structures like the frontal lobes and precuneus.1Be it human, animal or artificial, an autonomous agent3 is said to be (...) functionally conscious if its control structure (mind) implements Global Workspace Theory and the LIDA Cognitive Cycle, which includes unconscious memory and control functions needed to integrate the conscious component of the system. We would therefore consider humans, many animals4 and even some virtual or robotic agents5,6 to be functionally conscious. Such entities may approach phenomenal consciousness, as found in human and other biological brains, as additional brain-like features are added.Here we argue that adding mechanisms to produce a stable, coherent perceptual field7 in a LIDA controlled mobile robot might provide a small but significant step toward phenomenal consciousness in machines.>8 We also propose that implementing several of the various notions of self in such a LIDA controlled robot may well prove another step toward phenomenal consciousness in machines. (shrink)

In this book, Christopher Evan Franklin develops and defends a novel version of event-causal libertarianism. This view is a combination of libertarianism--the view that humans sometimes act freely and that those actions are the causal upshots of nondeterministic processes--and agency reductionism--the view that the causal role of the agent in exercises of free will is exhausted by the causal role of mental states and events (e.g., desires and beliefs) involving the agent. Franklin boldly counteracts a dominant theory that (...) has similar aims, put forth by well-known philosopher Robert Kane. -/- Many philosophers contend that event-causal libertarians have no advantage over compatibilists when it comes to securing a distinctively valuable kind of freedom and responsibility. To Franklin, this position is mistaken. Assuming agency reductionism is true, event-causal libertarians need only adopt the most plausible compatibilist theory and add indeterminism at the proper juncture in the genesis of human action. The result is minimal event-causal libertarianism: a model of free will with the metaphysical simplicity of compatibilism and the intuitive power of libertarianism. And yet a worry remains: toward the end of the book, Franklin reconsiders his assumption of agency reductionism, arguing that this picture faces a hitherto unsolved problem. This problem, however, has nothing to do with indeterminism or determinism, or even libertarianism or compatibilism, but with how to understand the nature of the self and its role in the genesis of action. Crucially, if this problem proves unsolvable, then not only is event-causal libertarianism untenable, so also is event-causal compatibilism. (shrink)

Invasive neurotechnologies are a frequent subject of discussion in neuroethics. Technologies, like deep brain stimulation and implantable brain-computer interfaces, are thought to hold significant promise for human health and well-being, but they also raise important ethical questions about autonomy, safety, stigma, privacy, and agency, among others. The terms ‘invasive’ and ‘invasiveness’ are commonly applied to these and other neurotechnologies, yet the concept of invasiveness itself is rarely defined or delimited. Some have suggested that invasiveness may have multiple meanings – physical, (...) emotional, or lifestyle – and that confusion about how people use the terms may lead to harm, especially for users of invasive devices. It is uncertain if debates in neuroethics contribute to this confusion. To investigate this, we conducted a study of how the term ‘invasiveness’ is used in neuroethics. We found that neuroethicists almost always use ‘invasiveness’ to refer to the physical features of interventions, and rarely to refer to other senses of invasiveness. We also found that referencing invasiveness does not determine which ethical issues are prioritized for a given type of neurotechnology. Overall, this study affirms the importance of understanding the meaning and use of the concept of invasiveness in ethical discussion of neurotechnology while also suggesting the need for further work in the area and consideration for rethinking what forms of technology we consider to be invasive. (shrink)