 Although different fields of ethical reflection on specific technologies might well raise their own philosophical and ethical issues, it can be questioned whether this justifies the development of separate subfields or even subdisciplines. One obvious argument might be that in order to say something ethically meaningful about new technologies, one needs specialized and detailed knowledge of a specific technology. Moreover such subfields allow interaction with relevant non-philosophical experts in for example law, psychology, economy, science and technology studies (STS) or technology assessment (TA). On the other side, it could also be argued that a lot can be learned from interaction and discussion between ethicists specializing in different technologies, and a fruitful interaction with the two other strands discussed above (cultural and political approaches and engineering ethics). Currently, such interaction in many cases seems absent, although there are of course exceptions.