New section of the class Collins (1975), The Seven Sexes: A Study in the Sociology of a Phenomenon, or the Replication of Experiments in Physics Amann and Knorr Cetina (1988), The Fixation of (Visual) Evidence Sismondo (2009), Chapter 8: Actor–network theory Callon (1984), Some Elements of a Sociology of Translation: Domestication of the Scallops and the Fishermen of St Brieuc Bay

Collins is porting ideas from sociology of culture to sociology of science e.g. cultural categories used to explain the world: race, political roles, family roles, etc

Why pseudonyms in article? - heat - We know what a ‘competent’ measurement in heat is because we know what characteristics heat has. -Collins is flipping that by showing that negotiations of the characteristics of gravitational waves are reducible to negotiations of what constitutes a competent measurement

40 years later… Beams are 3km long “650 members, representing 119 institutions in 14 different countries” 14 August 2017 detected two black holes colliding “The design of detectors like Virgo and LIGO thus requires a detailed inventory of all noise sources which could impact the measurement, allowing a strong and continuing effort to reduce them as much as possible”