Obligatory passage point
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The concept of Obligatory passage point (OPP) was developed by sociologist Michel Callon in a seminal contribution to Actor-network theory: Callon, Michel (1986), "Elements of a sociology of translation: Domestication of the Scallops and the Fishermen of St Brieuc Bay". In John Law (Ed.), Power, Action and Belief: A New Sociology of Knowledge? London, Routledge: 196-233.

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