In Enhancing Evolution, leading bioethicist John Harris dismantles objections to genetic engineering, stem-cell research, designer babies, and cloning and makes an ethical case for biotechnology that is both forthright and rigorous. Human enhancement, Harris argues, is a good thing--good morally, good for individuals, good as social policy, and good for a genetic heritage that needs serious improvement. Enhancing Evolution defends biotechnological interventions that could allow us to live longer, healthier, and even happier lives by, for example, providing us with immunity (...) from cancer and HIV/AIDS. Further, Harris champions the possibility of influencing the very course of evolution to give us increased mental and physical powers--from reasoning, concentration, and memory to strength, stamina, and reaction speed. Indeed, he says, it's not only morally defensible to enhance ourselves; in some cases, it's morally obligatory. In a new preface, Harris offers a glimpse at the new science and technology to come, equipping readers with the knowledge to assess the ethics and policy dimensions of future forms of human enhancement. (shrink)

In his discussion of in vitrogametogenesis, Rob Sparrow claims that an ethical barrier to development of this technology is that many jurisdictions currently prohibit the practice of creating embryos solely for the purpose of research. However, he suggests that this ethical barrier will soon be eroded, in view of the fact that in vitro gametogenesis could serve as a powerful new technology to overcome infertility. In this commentary, I argue that Sparrow is being overly optimistic in his analysis here. I (...) claim that the debate over so-called compromise positions in the human embryonic stem cell debate suggests that the purpose of the research for which a research embryo is created is unlikely to be considered as having any significant bearing on the moral permissibility of the practice for those who oppose it. Even though in vitro gametogenesis could serve as a powerful new technology to overcome infertility, I argue that opponents of the practice of creating embryos solely for research purposes would still view the creation of research embryos that the development of in vitro gametogenesis would require, as being incompatible with affording the embryo proper moral respect. I conclude by suggesting that Sparrow's analysis of the potential benefits of in vitro gametogenesis provides us with further reasons to scrutinise the unconvincing arguments that are often cited in favour of prohibiting the practice of creating embryos solely for research purposes. (shrink)

Sparrow highlights three potential applications of in vitro eugenics, that is, (a) research into the heredity of genetic disorders, (b) production of cell lines with specific genotypes, and (c) breeding better babies, and points to the need for researchers to discuss in advance the potential ethical problems that may emerge if the realization of this technology occurs in the near future. In this commentary, we pose a question for the sake of discussion. Is it, in fact, appropriate to label all (...) three applications raised by Sparrow as eugenics? By doing so, an unnecessary level of concern might be borne among the public, and as a result, the sound development of this specialized technology would be affected. If the label of eugenics is to be applied to all three of these applications, then Sparrow must justify how he perceives (a) and (b) as not inherently different from (c). (shrink)

We have a reason to use information which is available about such genes in our reproductive decision-making; (3) couples should selec.

A number of advances in assisted reproduction have been greeted by the accusation that they would produce children ‘without parents’. In this paper I will argue that while to date these accusations have been false, there is a limited but important sense in which they would be true of children born of a reproductive technology that is now on the horizon. If our genetic parents are those individuals from whom we have inherited 50% of our genes, then, unlike in any (...) other reproductive scenario, children who were conceived from gametes derived from stem cell lines derived from discarded IVF embryos would have no genetic parents! This paper defends this claim and investigates its ethical implications. I argue that there are reasons to think that the creation of such embryos might be morally superior to the existing alternatives in an important set of circumstances. (shrink)

Why potential parents should select the best child of possible children, and the necessity of a dialogue about the context of a reproductive decision.The principle of Procreative Beneficence is the principle of selecting the best child of the possible children one could have. This principle is elaborated on and defended against a range of objections. In particular, focus is laid on four objections that Michael Parker raises: that it is underdetermining, that it is insensitive to the complex nature of the (...) good, that it is self-defeating and that it is overly individualistic. Procreative Beneficence is a useful principle in reproductive decision-making. It is necessary to be more active in making selection decisions about what kind of child to have.Parker1 raises four objections to the principle of Procreative Beneficence . I will address these in turn. Procreative Beneficence is underdeterminingParker claims that Procreative Beneficence is underdetermining. By “underdetermining”, he means that the principle will not give clear and determinate answers as to which lives are better or best. Parker argues that “ranking possible lives as “better” or “worse” is “highly problematic”.Ranking lives is a very complex matter. Let us distinguish between: the value of a whole life and the value of an individual feature of a life .We should also distinguish between valuation ex ante and ex post . In Procreative Beneficence, I likened genetic testing to playing the wheel of fortune.2 Just because we have a weak chance of winning, does not mean we should not play the game. The only reason not to play a game that …. (shrink)