Bill Joy gives an interview in the December 2003 Wired in which he updates his views on potentially dangerous technologies. The bottom line: "These technologies won't stop themselves, so we need to do whatever we can to give the good guys a head start." The technologies being considered are nanotechnology, genomics, and robotics, by which is meant machine intelligence. [Bill's proposal — giving the good guys a head start — sounds right to me. –CP]