“Production networks are inherently dynamic; they are always, by definition, in a process of flux—in the process of becoming—both organizationally and geographically. The spatio-temporality of production networks, therefore, is highly variable and contingent. As Hudson (2004, p. 462) points out, ‘[…] economic processes must be conceptualized in terms of a complex circuitry with a multiplicity of linkages and feedback loops rather than just “simple” circuits or, even worse, linear flows’. Some networks are long-lived, others are more ephemeral; some are geographically extensive, others are more geographically localized. None remain completely unchanged for very long.” (‘GPN – realising the potential’, Journal of Economic Geography, p 271, 2008)