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)

Recent developments in biotechnology and genetic research are raising complex ethical questions concerning the legitimate scope and limits of genetic intervention. As we begin to contemplate the possibility of intervening in the human genome to prevent diseases, we cannot help but feel that the human species might soon be able to take its biological evolution in its own hands. 'Playing God' is the metaphor commonly used for this self-transformation of the species, which, it seems, might soon be within our grasp. (...) In this important new book, Jurgen Habermas - the most influential philosopher and social thinker in Germany today - takes up the question of genetic engineering and its ethical implications and subjects it to careful philosophical scrutiny. His analysis is guided by the view that genetic manipulation is bound up with the identity and self-understanding of the species. We cannot rule out the possibility that knowledge of one's own hereditary factors may prove to be restrictive for the choice of an individual's way of life and may undermine the symmetrical relations between free and equal human beings. In the concluding chapter - which was delivered as a lecture on receiving the Peace Prize of the German Book Trade for 2001 - Habermas broadens the discussion to examine the tension between science and religion in the modern world, a tension which exploded, with such tragic violence, on September 11th. (shrink)

Recent developments in genomic science hold out the tantalizing prospect of soon being able to treat and prevent a wide variety of medical conditions through gene therapy. In time, it may be possible to use similar techniques not simply to combat disease but also to enhance, or improve on, normal human functioning.

There is a popular and widely accepted version of the precautionary principle which may be expressed thus: “If you are in a hole—stop digging!”. Tom Baldwin, as Deputy Chair of the Human Fertilisation and Embryology Authority , may be excused for rushing to the defence of the indefensible,1 the HFEA’s sex selection report,2 but not surely for recklessly abandoning so prudent a principle. Baldwin has many complaints about my misrepresenting the HFEA and about my supposed elitist contempt for public opinion; (...) readers of this exchange will decide for themselves.REDRAFTING THE REPORTBaldwin begins with a piece of wishful thinking:"Harris objects that in this recommendation “an absurdly high standard of caution is employed”, since a theoretical risk is associated with almost all medical procedures. This objection is misplaced: as paragraph 142 of the report indicates, the phrase “theoretical risk” is to be understood here in the light of the earlier discussion of the risks arising from the fact that flow cytometry exposes sperm to laser energy, a procedure which is known to be liable to damage DNA."Paragraph 142 does not make that clear. It does indeed refer back to a set of earlier paragraphs but these give, if anything, an upbeat assessment of the safety of flow cytometry. Paragraph 121 states: “However whilst potentially less intrusive, and with potentially lower risk to the health of patients, flow cytometry …” .2 But even if the overall burden of the report does indicate unresolved fears, the standard is still absurdly high. However, so far from endorsing the report’s judgement that flow cytometry has “potentially lower risk to the health of patients”, Baldwin now regards the risk of flow cytometry as “serious”1:"Since the application of flow cytometry to humans is a new procedure, the risk of … ". (shrink)