HARRY COLLINS Department of Sociology, University of SouthamptonGILLIAN HARDSTONE CENTRIM, University of BrightonJOANNE HARTLAND School of Social Science, University of BathROBERT HOFFMAN Department of Psychology, Adelphi University, New York, USAJOHN HOWELLS Department of Business and Management, Brunel UniversityDONALD MACKENZIE Department of Sociology, University of EdinburghMAUREEN MCNEIL Department of Cultural Studies, University of BirminghamROB PROCTER Department of Computer Science, University of EdinburghPAOLO SAVIOTTI Universite Pierre Mendes-FranceJACKY SENKER Science Policy Research Unit, University of SussexNIGEL SHADBOLT Department of Psychology, Nottingham UniversityGRAHAM SPINARDI RCSS, University of Edinburgh