Anthony Wrigley

Parfit’s (1984) Non-Identity Problem provides a strong line of argument that we cannot be harmed by pre-conception choices or actions. I argue that we can no longer appeal to the Non-Identity problem in order to justify using pre-conception genetic screening and selection techniques as a harmless tool to determine the genetic constitution of future individuals. My criticism of the Non-Identity problem is based on a rejection of the metaphysical foundations of Parfit’s argument - Kripke’s (1980) essentialist arguments for the necessity of origin. I offer an alternative account of modal harms based on counterpart theory such as that offered by David Lewis (1986). On this account, individuals can make legitimate harm claims in regard to pre-conception choices made in determining their genetic constitution by appeal to their counterparts across possible worlds.

NThere are many problems with Levi and Green’s (2010) suggestion that a computer-based decision aid will overcome the major objections to advance directives (ADs). We focus on just two here. First, we argue that the key assumption underlying Levi and Green’s paper, that autonomy always ought to take priority over other values, is false. Second, we argue that the paper misses the point of the most telling objections to the use of ADs: they lack the relevant moral authority to determine treatments. It is not that they are merely subject to a set of contingent problems related to capturing the wishes of individuals or being open to misinterpretation by others.We conclude that the plug should be pulled on Levi and Green’s computer-based proposal.

IntroductionExtended decision -making through the use of proxy decision -makers has been enshrined in a range of International Codes, Professional Guidance and Statute,For example, the UK Mental Capacity Act section 9.1; The General Medical Council ; the US National Guardianship Association ; Nuffield Council on Bioethics ; CIOMS-WHO section 6. Court cases such as Re Quinlan in the US have also contributed to establishing the groundings for the legal status of the proxy, albeit in terms of who might be suitable as a proxy in cases where there was no clear appointment of them by a still competent individual. and is now widely seen as a useful means through which we can exercise control over decisions that affect our lives when we have lost capacity to make these decisions for ourselves.I will here limit myself to discussion of proxy consent for adults appointed prior to the loss of competence by the person they are acting as proxy for. The issue of p.