From a post and podcast about human enhancement at Practical Ethics, a comment by Australian bioethicist Chris Gyngell about the world to come:

“In the near future parents may be able to directly alter the genetic make-up of their children using genetic engineering technologies (GETs). A popular model that has been proposed for regulating access to GETs is the ‘genetic supermarket.’ In the genetic supermarket parents are free to make decisions about which genes to select for their children with little state interference. One possible consequence of the genetic supermarket is that ‘collective action problems’ will arise. The combined result of individuals using the market to pursue self-interested gains may have a negative effect on society as a whole, and on future generations. n this paper Gyngell asks whether GETs targeting height, innate immunity, and certain cognitive traits would lead to collective action problems if available in the genetic supermarket. he argues that that the widespread availability of GETs targeting height are unlikely to lead to genuine collective action problems, but that those targeting innate immunity and aspects of our cognition, could.”