Speaking as scientists: computer professionals in the star wars debate.

In his "Star Wars" speech, President Ronald Reagan asked the "scientific community" to develop missile defense technologies that would render the massive Soviet nuclear arsenal "impotent and obsolete." This paper compares the voices of two communities, physics and computing, who attempted to reply to Reagan's proposal as scientists . While physicists framed Star Wars in terms of simple systems which were subject to fundamental physical laws, computer professionals framed the proposal in terms of complex systems and patterns of production. When disputes within each of these communities erupted into the public sphere, physicists were able to find a measure of consensus around an authoritative discourse of natural laws, while the computing professionals' discourse remained fragmented between theory and practice, never achieving the same level of closure. These disputes struck at the heart of professional identities, even as they raised the question of what forms of expertise could speak to a public policy culture that expects certainty from its scientists. [ABSTRACT FROM AUTHOR]