Our potential for dissecting the complex processes involved in eukaryotic DNA replication has been dramatically increased with the recent development of cell‐free systems that recreate many of these processes in vitro. Initial results from these systems have drawn together work on the cell cycle, the enzymology of replication, and the structure of the nucleus.

Recent advances in the Super Linguistics of pictures have laid the Super Semantic foundation for modelling the phenomena of narrative sequencing and co-reference in pictorial and mixed linguistic-pictorial discourses. We take up the question of how one arrives at the pragmatic interpretations of such discourses. In particular, we offer an analysis of: (i) the discourse composition problem: how to represent the joint meaning of a multi-picture discourse, (ii) observed differences in narrative sequencing in prima facie equivalent linguistic vs pictorial discourses, (...) and (iii) the phenomenon of co-referencing across pictures. We extend Segmented Discourse Representation Theory to spell out a formal Super Pragmatics that applies to linguistic, pictorial and mixed discourses, while respecting the particular ‘genius’ of either medium and computing their distinctive pragmatic interpretations. (shrink)

Brain organoid research raises ethical challenges not seen in other forms of stem cell research. Given that brain organoids partially recapitulate the development of the human brain, it is plausible that brain organoids could one day attain consciousness and perhaps even higher cognitive abilities. Brain organoid research therefore raises difficult questions about these organoids' moral status – questions that currently fall outside the scope of existing regulations and guidelines. This paper shows how these gaps can be addressed. We outline a (...) moral framework for brain organoid research that can address the relevant ethical concerns without unduly impeding this important area of research. (shrink)

This paper presents a novel account of focal stress and pitch contour in English dialogue. We argue that one should analyse and treat focus and pitch contour jointly, since (i) some pragmatic interpretations vary with contour (e.g., whether an utterance accepts or rejects; or whether it implicates a positive or negative answer); and (ii) there are utterances with identical prosodic focus that in the same context are infelicitous with one contour, but felicitous with another. We offer an account of two (...) distinct pitch contours that predicts the correct felicity judgements and implicatures, outclassing other models in empirical coverage or formality. Prosodic focus triggers a presupposition, where what is presupposed and how the presupposition is resolved depends on prosodic contour. If resolving the presupposition entails the proffered content, then the proffered content is uninteresting and hence the utterance is in-felicitous. Otherwise, resolving the presupposition may lead to an implicature. We regiment this account in SDRT. (shrink)

The knowledge norm of assertion is the subject of a lively debate on when someone is in a position to assert something. However, not much has been said about the logic that underlies such debate. In this paper, I propose a formalisation of the knowledge norm in a deontic logic that aims to be explanatory and conceptually sound. Afterwards, I investigate some problems that this formalisation makes visible. This reveals some significant limitations of the underlying logic: it can neither contain (...) Axiom 4 nor Axiom C4. Moreover, sentences of the form p and I have not asserted that p appear to licence a violation of deontic rules. (shrink)

The precautionary principle aims to influence decision‐making in contexts where some activity poses uncertain but potentially grave threats. This perfectly describes the controversy surrounding germline gene editing. This article considers whether the precautionary principle should influence how we weigh the risks and benefits of human germline interventions, focusing especially on the possible threats to the health of future generations. We distinguish between several existing forms of the precautionary principle, assess their plausibility and consider their implications for the ethics of germline (...) modification. We also offer a novel form of the precautionary principle: the sufficientarian precautionary principle. Some plausible versions of the precautionary principle recommend placing somewhat greater weight on avoiding threats to future generations than on achieving short‐term benefits. However, no plausible versions of the precautionary principle entail that we should outright reject the use germline gene editing in human reproduction and some, such as the sufficientarian version, might endorse its use. (shrink)

Human‐animal chimeras—creatures composed of a mix of animal and human cells—have come to play an important role in biomedical research, and they raise ethical questions. This article focuses on one particularly difficult set of questions—those related to the moral status of human‐animal chimeras with brains that are partly or wholly composed of human cells. Given the uncertain effects of human‐animal chimera research on chimeric animals’ cognition, it would be prudent to ensure we do not overlook or underestimate their moral status. (...) However, to assess moral status, we first need to determine what kinds of capacities are morally relevant. The standard view holds that it matters, morally, if chimeric animals develop uniquely human cognitive capacities. I argue that this view is mistaken, highlighting three problems with it: that we can think of examples of uniquely human cognitive capacities that are not morally significant, that we can think of examples of morally significant cognitive capacities that are not uniquely human, and that evidence that some cognitive capacity is shared with nonhuman animals does not undermine claims that this capacity is morally significant. We need a better framework for thinking about the moral status of part‐human beings. (shrink)

Anti-realism is plagued by Fitch’s paradox: the remarkable result that if one accepts that all truths are knowable, minimal assumptions about the nature of knowledge entail that every truth is known. Dorothy Edgington suggests to address this problem by understanding p is knowable to be a counterfactual claim, but her proposal must contend with a forceful objection by Timothy Williamson. I revisit Edgington’s basic idea and find that Williamson’s objection is obviated by a refined understanding of counterfactual knowability that is (...) grounded in possible courses of inquiry. I arrive at a precise definition of knowability that is not just a technical avoidance of paradox, but is metaphysically sound and does justice to the anti-realist idea. (shrink)

AI researchers have developed sophisticated language models capable of generating paragraphs of 'synthetic text' on topics specified by the user. While AI text generation has legitimate benefits, it could also be misused, potentially to grave effect. For example, AI text generators could be used to automate the production of convincing fake news, or to inundate social media platforms with machine-generated disinformation. This paper argues that AI text generators should be conceptualised as a dual-use technology, outlines some relevant lessons from earlier (...) debates on dual-use life sciences research, and calls for closer collaboration between ethicists and the machine learning community to address AI language models’ dual-use implications. (shrink)

DNA databases have significant commercial value. Direct-to-consumer genetic testing companies have built databanks using samples and information voluntarily provided by customers. As the price of genetic analysis falls, there is growing interest in building such databases by paying individuals for their DNA and personal data. This paper maps the ethical issues associated with private companies paying for DNA. We outline the benefits of building better genomic databases and describe possible concerns about crowding out, undue inducement, exploitation, and commodification. While certain (...) objections deserve more empirical and philosophical investigation, we argue that none currently provide decisive reasons against using financial incentives to secure DNA samples. (shrink)

Are hierarchical arrangements in the workplace, including the employer-employee relationship, consistent with the ideal of relating to one another as moral equals? With this question at its core, this volume of essays by leading moral and political philosophers explores ideas about justice in the workplace, contributing to both political philosophy and business ethics. Relational egalitarians propose that the ideal of equality is primarily an ideal of social relationships and view the equality of social relationships as having priority over the distributive (...) arrangements. Yet contemporary workplaces are characterized by hierarchical employer-employee relationships. The essays push discussions of the relational egalitarian tradition in new directions, helping to show its promise and its limits. They address pressing concerns at a time of widening inequality and rapid changes in the nature of work. (shrink)

The International Society for Stem Cell Research (ISSCR) has recently released the 2021 update of its guidelines. The update includes detailed new recommendations on human–animal chimera research. This paper argues that the ISSCR recommendations fail to address the core ethical concerns raised by neurological chimeras—namely, concerns about moral status. In minimising moral status concerns, the ISSCR both breaks rank with other major reports on human–animal chimera research and rely on controversial claims about the grounds of moral status that many people (...) will rightly reject. A more robust framework for regulating human–animal chimera research still needs to be developed. (shrink)

A common strategy in bioethics is to posit a prima facie case in favour of one policy, and to then claim that the burden of proof falls on those with opposing views. If the burden of proof is not met, it is claimed, then the policy in question should be accepted. This article illustrates, and critically evaluates, examples of this strategy in debates about the sale of organs by living donors, human enhancement, and the precautionary principle. We highlight general problems (...) with this style of argument, and particular problems with its use in specific cases. We conclude that the burden ultimately falls on decision-makers to choose the policy supported by the best reasons. (shrink)

In The Gift Relationship, Richard Titmuss argued that the practice of altruistic blood donation fosters social solidarity while markets in blood erode it. This paper considers the implications of this line of argument for the organ market debate. I defend Titmuss’ arguments against a number of criticisms and respond to claims that Titmuss’ work is not relevant to the context of live donor organ transplantation. I conclude that Titmuss’ arguments are more resilient than many advocates of organ markets suggest, and (...) more relevant to the debate than is commonly appreciated. (shrink)

In Markets Without Limits and a series of related papers, Jason Brennan and Peter Jaworski argue that it is morally permissible to buy and sell anything that it is morally permissible to possess and exchange outside of the market. Accordingly, we should open markets in “contested commodities” including blood, gametes, surrogacy services, and transplantable organs. This paper clarifies some important aspects of the case for market boundaries and in so doing shows why there are in fact moral limits to the (...) market. I argue that the case for restricting the scope of the market does not turn on the idea that some things are constitutively non-market goods; it turns instead on the idea that treating some things according to market norms would threaten the realization of particular kinds of human interests. (shrink)

Genomic research can reveal ‘unsolicited’ or ‘incidental’ findings that are of potential health or reproductive significance to participants. It is widely thought that researchers have a moral obligation, grounded in the duty of easy rescue, to return certain kinds of unsolicited findings to research participants. It is less widely thought that researchers have a moral obligation to actively look for health-related findings. This paper examines whether there is a moral obligation, grounded in the duty of easy rescue, to actively hunt (...) for genomic secondary findings. We begin by showing how the duty to disclose individual research findings can be grounded in the duty of easy rescue. Next, we describe a parallel moral duty, also grounded in the duty of easy rescue, to actively hunt for such information. We then consider six possible objections to our argument, each of which we find unsuccessful. Some of these objections provide reason to limit the scope of the duty to look for secondary findings, but none provide reason to reject this duty outright. We argue that under a certain range of circumstances, researchers are morally required to hunt for these kinds of secondary findings. Although these circumstances may not currently obtain, genomic researchers will likely acquire an obligation to hunt for secondary findings as the field of genomics continues to evolve. (shrink)

Dementia is an illness that raises important questions about our own attitudes to illness and aging. It also raises very important issues beyond the bounds of dementia to do with how we think of ourselves as people--fundamental questions about personal identity. Is the person with dementia the same person he or she was before? Is the individual with dementia a person at all? In a striking way, dementia seems to threaten the very existence of the self.LThis book brings together philosophers (...) and practitioners to explore the conceptual issues that arise in connection with this increasingly common illness. Drawing on a variety of philosophers such as Descartes, Lock, Hume, Wittgenstein, the authors explore the nature of personal identity in dementia. They also show how the lives and selfhood of people with dementia can be enhanced by attention to their psychological and spiritual environment. Throughout, the book conveys a strong ethical message, arguing in favor of treating people with dementia with all the dignity they deserve as human beings. The book covers a range of topics, stretching from talk of basic biology to talk of a spiritual understanding of people with dementia. Accessibly written by leading figures in psychiatry and philosophy, the book presents a unique and long overdue examination of an illness that features in so many of our lives. (shrink)

An innovative program recently initiated at the University of California, Los Angeles Medical Center allows people to donate a kidney in exchange for a voucher that a loved one can redeem for a kidney if and when needed. As a relatively new practice, the ethical implications of advanced kidney donation have not yet been widely discussed. This paper reflects on some of the bioethical issues at stake in this new donation program, as well as some broader philosophical issues related to (...) the meaning and moral salience of commodification. I first consider whether the literature on commercial markets in organs––a longstanding topic of bioethical debate––can meaningfully inform ethical analysis of kidney voucher programs. Specifically, I consider whether and to what extent common objections to the exchange of kidneys for cash also apply to the exchange of kidneys for “kidney vouchers.” Second, I argue that the contrast between the ethical issues raised by these two practices highlights the need to understand commodification as existing on a continuum, with different degrees of commodification giving rise to different ethical issues. Doing so can help sharpen our understanding of commodification as a moral concept, as well as its relevance to broader debates about the moral limits of markets. (shrink)

Stephen Read presented harmonious inference rules for identity in classical predicate logic. I demonstrate here how this approach can be generalised to a setting where predicate logic has been extended with epistemic modals. In such a setting, identity has two uses. A rigid one, where the identity of two referents is preserved under epistemic possibility, and a non-rigid one where two identical referents may differ under epistemic modality. I give rules for both uses. Formally, I extend Quantified Epistemic Multilateral Logic (...) with two identity signs. I argue that a uniform meaning for identity tout court can be given by adopting Maria Aloni’s account of reference using conceptual covers. We obtain a harmonious set of rules for identity that is sound and complete for Aloni’s model theory. (shrink)

One common objection to establishing regulated live donor organ markets is that such markets would be exploitative. Perhaps surprisingly, exploitation arguments against organ markets have been widely rejected in the philosophical literature on the subject. It is often argued that concerns about exploitation should be addressed by increasing the price paid to organ sellers, not by banning the trade outright. I argue that this analysis rests on a particular conception of exploitation, and outline two additional ways that the charge of (...) exploitation can be understood. I argue that while increasing payments to organ sellers may mitigate or eliminate fair benefits exploitation, such measures will not necessarily address fair process exploitation or complicity in injustice. I further argue that each of these three forms of wrongdoing is relevant to the ethics of paid living organ donation, as well as the design of public policy more generally. (shrink)

Genomic sequencing technologies (GS) pose novel challenges not seen in older genetic technologies, making traditional standards for fully informed consent difficult or impossible to meet. This is due to factors including the complexity of the test and the broad range of results it may identify. Meaningful informed consent is even more challenging to secure in contexts involving significant time constraints and emotional distress, such as when rapid genomic testing (RGS) is performed in neonatal intensive care units. In this article, we (...) propose that informed consent matters not for its own sake, but because obtaining it furthers a range of morally important goals, such as promoting autonomy, well‐being, and trust in medicine. These goals form the basis of a new framework [PROmoting Morally Important Consent Ends (PROMICE)] for assessing the ethical appropriateness of various informed consent models. We illustrate this framework with two examples: (a) a tiered and layered consent model for obtaining consent for GS, and (b) consent for RGS in critically ill newborns. We conclude that appropriately—rather than fully—informed consent provides the correct standard for genomic medicine and research. (shrink)

Luke Semrau argues that the documented harms of existing organ markets do not undermine the case for establishing regulated systems of paid kidney donation. He offers two arguments in support of this conclusion. First, Semrau argues that the harms of kidney selling are straightforwardly amenable to regulatory solution. Second, Semrau argues that even in existing black markets, sellers would likely have experienced greater harm if the option of selling a kidney were not available. This commentary challenges both of Semrau’s claims. (...) I argue that there is no reason to believe that kidney sellers benefit from the current black market trade in organs, and highlight a number of potential issues regarding the effectiveness and feasibility of Semrau’s proposed market regulations. (shrink)

Greely’s target article outlines six categories of ethical issues associated with human brain surrogate research. Some of these issues are familiar from other research contexts; others, less...

In Unreliability and Point of View in Filmic Narration, Emar Maier makes a distinction between reliable and unreliable narrators. The latter, Maier claims, must be a first-person narrator, as an impersonal, third-person narrator lacks an individual perspective that can be unreliable. He concludes that most film adaptations of unreliably narrated novels are not themselves unreliably narrated, for they feature third person perspectives. I take Maier’s major claims to be that there is a strict distinction between reliable and unreliable narration; and (...) that film shots displaying both a character and that character's hallucinations are not unreliable narration. I will challenge both. (shrink)

Recent advances in human brain organoid systems have raised serious worries about the possibility that these in vitro ‘mini‐brains’ could develop sentience, and thus, moral status. This article considers the relative moral status of sentient human brain organoids and research animals, examining whether we have moral reasons to prefer using one over the other. It argues that, contrary to common intuitions, the wellbeing of sentient human brain organoids should not be granted greater moral consideration than the wellbeing of nonhuman research (...) animals. It does so not by denying that typical humans have higher moral status than animals, but instead by arguing that none of the leading justifications for granting humans higher moral status than nonhuman animals apply to brain organoids. Additionally, it argues that there are no good reasons to be more concerned about the well‐being of human brain organoids compared to those generated from other species. (shrink)

We present epistemic multilateral logic, a general logical framework for reasoning involving epistemic modality. Standard bilateral systems use propositional formulae marked with signs for assertion and rejection. Epistemic multilateral logic extends standard bilateral systems with a sign for the speech act of weak assertion (Incurvati and Schlöder 2019) and an operator for epistemic modality. We prove that epistemic multilateral logic is sound and complete with respect to the modal logic S5 modulo an appropriate translation. The logical framework developed provides the (...) basis for a novel, proof-theoretic approach to the study of epistemic modality. To demonstrate the fruitfulness of the approach, we show how the framework allows us to reconcile classical logic with the contradictoriness of so-called Yalcin sentences and to distinguish between various inference patterns on the basis of the epistemic properties they preserve. (shrink)

I argue that rejection is a speech act that cannot be reduced to assertion. Adapting an argument by Huw Price, I conclude that rejection is best conceived of as the speech act that is used to register that some other speech act is (or would be) violating a rule of the conversation game. This can be naturally understood as registering *norm violations* where speech acts are characterised by their essential norms. However, I argue that rejection itself is not to be (...) characterised by a norm. Instead, registering violations is a necessary condition for understanding the normative framework in the first place. The core observation is that the concept of an 'illegal move' is intelligible, so a speech act can be (say) an assertion, despite violating the essential norm of asserting. Rejection has the function of pointing out that a move is illegal. But registering rule violations is a precondition of playing games with rules (it is part of the concept 'game'), not itself a rule in a game. A similar special role of rejection (that it is not explicable in the terms provided by a framework, but needed to conceptualise these terms) likely occurs in other frameworks as well, e.g. characterising speech acts by commitments or their effect on a common ground. (shrink)

ABSTRACTLinguistic evidence supports the claim that certain, weak rejections are less specific than assertions. On the basis of this evidence, it has been argued that rejected sentences cannot be premisses and conclusions in inferences. We give examples of inferences with weakly rejected sentences as premisses and conclusions. We then propose a logic of weak rejection which accounts for the relevant phenomena and is motivated by principles of coherence in dialogue. We give a semantics for which this logic is sound and (...) complete, show that it axiomatizes the modal logic KD45 and prove that it still derives classical logic on its asserted fragment. Finally, we defend previous logics of strong rejection as being about the linguistically preferred interpretations of weak rejections. (shrink)

Kidney for Sale by Owner discusses a range of different arguments that can be offered in defence of live donor kidney markets. Although Cherry’s case for establishing such markets does not rest on consequentialist considerations, Cherry nonetheless suggests that allowing the sale of organs would have net positive consequences. He argues that both renal failure patients and people living in poverty could benefit from participating in the market, and further claims that a legal trade in organs would not shape society (...) in harmful ways. This paper argues that the likely consequences of establishing an open market in kidneys are less benign than Cherry suggests. Specifically, I argue that a live donor kidney market could plausibly harm sellers, give rise to harmful pressures to participate in the market, and reinforce unjust political and social structures. I conclude by considering the implications of these arguments for the organ market debate. (shrink)

Kidney for Sale by Owner discusses a range of different arguments that can be offered in defence of live donor kidney markets. Although Cherry’s case for establishing such markets does not rest on consequentialist considerations, Cherry nonetheless suggests that allowing the sale of organs would have net positive consequences. He argues that both renal failure patients and people living in poverty could benefit from participating in the market, and further claims that a legal trade in organs would not shape society (...) in harmful ways. This paper argues that the likely consequences of establishing an open market in kidneys are less benign than Cherry suggests. Specifically, I argue that a live donor kidney market could plausibly harm sellers, give rise to harmful pressures to participate in the market, and reinforce unjust political and social structures. I conclude by considering the implications of these arguments for the organ market debate. (shrink)

Bioethicists often defend novel practices by drawing analogies with practices that we are already familiar with and currently tolerate. If some novel practice is less bad than some widely-accepted practice, then (it is argued) we cannot rightly reject it. Using the bioethics literature on xenotransplantation and interspecies blastocyst complementation as a case study, I show how this style of argument can go awry. The key problem is that our moral intuitions about familiar practices can be distorted by their seeming normality. (...) When considering the ethics of emerging technologies and novel practices, we should remain open to the possibility that our moral views about familiar practices are mistaken. (shrink)