Despite the advent of CRISPR, safe and effective gene editing for human enhancement remains well beyond our current technological capabilities. For the discussion about enhancing human beings to be worth having, then, we must assume that gene-editing technology will improve rapidly. However, rapid progress in the development and application of any technology comes at a price: obsolescence. If the genetic enhancements we can provide children get better and better each year, then the enhancements granted to children born in any given (...) year will rapidly go out of date. Sooner or later, every modified child will find him- or herself to be “yesterday’s child.” The impacts of such obsolescence on our individual, social, and philosophical self-understanding constitute an underexplored set of considerations relevant to the ethics of genome editing. (shrink)

Principles of procreative beneficence (PPBs) hold that parents have good reasons to select the child with the best life prospects. Sparrow (2010) claims that PPBs imply that we should select only female children, unlesswe attach normative significance to “normal” human capacities. We argue that this claim fails on both empirical and logical grounds. Empirically, Sparrow’s argument for greater female wellbeing rests on a selective reading of the evidence and the incorrect assumption that an advantage for females would persist even when (...) a serious gender imbalance is obtained. Logically, PPBs cite only pro tanto reasons and allow that the good of an individual child could be outweighed by other morally relevant considerations, such as those which take collectively suboptimal outcomes into account. There is thus no need to attach value to the “normal.”. (shrink)

The idea that a world in which everyone was born “perfect” would be a world in which something valuable was missing often comes up in debates about the ethics of technologies of prenatal testing and preimplantation genetic diagnosis . This thought plays an important role in the “disability critique” of prenatal testing. However, the idea that human genetic variation is an important good with significant benefits for society at large is also embraced by a wide range of figures writing in (...) the bioethics literature, including some who are notoriously hostile to the idea that we should not select against disability. By developing a number of thought experiments wherein we are to contemplate increasing genetic diversity from a lower baseline in order to secure this value, I argue that this powerful intuition is more problematic than is generally recognized, especially where the price of diversity is the well-being of particular individuals. (shrink)

One prominent argument against the use of preimplantation genetic diagnosis to select a deaf embryo with the aim of creating a deaf child is that it violates the child’s right to an open future. This paper challenges the open future argument against deaf embryo selection, criticizing its major premise that deafness limits a child’s opportunity range in ways that compromise their future autonomy. I argue that this premise is not justified and is supported by negative presumptions about deaf embodiments that (...) are suspect and in need of further argumentation. First, available interpretations of the open future concept fail to justify the devaluation of deaf traits as inherently autonomy-diminishing. Second, arguing against deaf embryo selection requires demonstrating that a deaf trait generally constrains opportunity ranges independent of social context. But such analyses neglect important social and relational components of autonomy. For these reasons, merely appealing to the child’s right to an open future does not sufficiently support the conclusion that deaf embryo selection is wrong. (shrink)

With the hope of somehow contributing to the ongoing discussion on the topic, this paper is loosely based on the debate that emerged from Rob Sparrow's article “Should human beings have sex? Sexual dimorphism and human enhancement”. Building on some of his arguments, my claim is that we should not refer to gender when discussing not-yet-born agents. More broadly still, my intention is to provide a further analysis of the intersection of the concepts of gender and autonomy. I will begin (...) by briefly highlighting Sparrow's article and critiques, with special emphasis on the poststructuralist attack. In doing so, I will consider the differences between structuralism and poststructuralism in relation to this debate. Subsequently, I will draw a parallel between Judith Butler's notion of the performativity of gender, sex and Ronald Dworkin's distinction between zoe and bios. The next move will then be to re-divert attention to the crucial role that health plays in the discussion, suggesting that one of the substantial differences between human enhancers and non-enhancers is the ranking that health has in their corresponding scale of values. Setting the bar for how an organism functions “normally” will be the last step necessary to create the basis for my main claim: building on Butler's description of the singular agent in relation to others, I will suggest Jürgen Habermas and Onora O'Neill as credible and valuable expansions of a position willing to reconcile individual and relational autonomy, supporting this final claim with the words of Immanuel Kant. If we aim to use genetic engineering and preimplantation genetic diagnosis to prevent unhealthy children from being born – as I shall state we should – we can use this notion of normality in a way that will be accepted also by those who are historically critical of such a way of conceptualising a human being, only if we understand the parallel need for society to shift to a more inclusive and shared definition of autonomy. (shrink)

Robert Sparrow has recently claimed that unless there are reasons to think the sexed nature of human beings is normatively significant, current trends in bioethical reasoning force the conclusion that “we may do well to move toward a ‘post sex’ humanity” (American Journal of Bioethics 10: 7 (2010)). This commentary uses basic methodological principles from feminist ethics to argue that he has, in fact, given no reasons to think that a 'post sex' humanity is any more valuable than gender diverse (...) one, and no reason to think that sexual dimorphism has normative significance as a brute biological fact. (shrink)

Disability activists influenced by queer theory and advocates of “human enhancement” have each disputed the idea that what is “normal” is normatively significant, which currently plays a key role in the regulation of pre-implantation genetic diagnosis (PGD). Previously, I have argued that the only way to avoid the implication that parents have strong reasons to select children of one sex (most plausibly, female) over the other is to affirm the moral significance of sexually dimorphic human biological norms. After outlining the (...) logic that generates this conclusion, I investigate the extent to which it might also facilitate an alternative, progressive, opening up of the notion of the normal and of the criteria against which we should evaluate the relative merits of different forms of embodiment. This paper therefore investigates the implications of ideas derived from queer theory for the future of PGD and of PGD for the future of queerness. (shrink)

Robert Sparrow argues that because of women's longer life expectancy philosophers who advocate the genetic modification of human beings to enhance welfare rather than merely supply therapy are committed to favouring the selection of only female embryos, an implication he deems sufficiently implausible to discredit their position. If Sparrow's argument succeeds, then philosophers who advocate biomedical moral enhancement also seem vulnerable to a similar charge because of men's greater propensity for various forms of harmful wrongdoing. This paper argues there are (...) various flaws in Sparrow's argument that render it unsuccessful. The paper also examines whether dimorphism reduction is a more desirable outcome than male elimination, thereby further illustrating the difficulties besetting the distinction between therapy and enhancement. (shrink)

A disadvantage of adopting reductio ad absurdum as a mode of argument is that it multiplies the options available to one's critics. As with any argument, detractors may deny the argument's premises...

In this paper, I respond to recent criticisms, by Paula Casal, of my arguments about the implications of John Harris and Julian Savulescu's influential arguments for human enhancement for sex selection. I argue that, despite her protestations, her paper relies upon the idea that parents have a moral obligation to have children that will serve the interests of the nation. Casal’s use of dubious claims about inherent psychological differences between men and women to make her hypothetical case for moral enhancement (...) and her troubling references to “evolved humans” only exacerbate the political dangers involved in the argument for human enhancement. (shrink)

Participants in the long-running bioethical debate over human germline genetic modification (HGGM) tend to imagine future people abstractly and on the basis of conventionalized characteristics familiar from science fiction, such as intelligence, disease resistance and height. In order to distinguish these from scientifically meaningful terms like “phenotype” and “trait,” this article proposes the term “persemes” to describe the units of difference for hypothetical people. In the HGGM debate, persemes are frequently conceptualized as similar, modular entities, like building blocks to be (...) assembled into genetically modified people. They are discussed as though they each would be chosen individually without affecting other persemes and as though they existed as components within future people rather than being imposed through social context. This modular conceptual framework appears to influence bioethical approaches to HGGM by reinforcing the idea of human capacities as natural primary goods subject to distributive justice and supporting the use of objective list theories of well-being. As a result, assumptions of modularity may limit the ability of stakeholders with other perspectives to present them in the HGGM debate. This article examines the historical trends behind the modular framework for genetically modified people, its likely psychological basis, and its philosophical ramifications. (shrink)