RT Journal Article SR Electronic T1 Bach to the future: response to: Extending preimplantation genetic diagnosis: medical and non-medical uses JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 217 OP 219 DO 10.1136/jme.29.4.217 VO 29 IS 4 A1 Ashcroft, R YR 2003 UL http://jme.bmj.com/content/29/4/217.abstract AB Professor Robertson sketches an elegant framework for policy evaluation and regulation of the use of preimplantation genetic diagnosis for various medical, medical related, and non-medical purposes. In criticism of his position, I argue that the distinction between policy and ethics upon which his argument relies is highly unstable, and the approach taken to ethical evaluation of particular parental interests leaves open many issues which the policy approach would hope to exclude. In conclusion I argue that while his position ultimately fails, the onus is on his critics to come up with a viable and satisfying alternative.