Published online by Cambridge University Press: 01 January 2020
1 See, e.g., Barnes, B. ‘On the Extension of Concepts and the Growth of Knowledge,’ Sociological Review 30 (1982) 23–44.CrossRefGoogle Scholar
2 Three small points: First, on page 53, the quotation in German from Wagner's Parsifal should read, ‘Enthüllet den Gral!’ [not ‘Enhüllet…’]. Second, the insight about replication attributed to Hans Radder on page 72 should surely be credited to Harry Collins. Third, footnote 2 on page 181 is missing from its appointed place on page 236.