CONCEPT
Technological Momentum
Hughes's principle that mature sociotechnical systems resist change due to accumulated infrastructure, institutions, and interests—a middle position between determinism and social construction.
Technological momentum describes the relationship between technology and society as temporal and developmental: young systems are shaped by society, mature systems shape society. A technology in its formative period is maximally plastic—every decision about configuration, standards, and deployment remains open to human choice. As the system matures, each choice reduces the range of subsequent choices. Infrastructure is installed, workforces are trained, institutions are established, economic interests develop, cultural assumptions harden. These components interlock, producing collective resistance to change that exceeds any individual component's resistance. Momentum is not determinism—systems can be redirected—but redirection requires effort proportional to accumulated sociotechnical weight.
In The You On AI Field Guide
Hughes developed the momentum concept through comparative analysis of electrical systems that successfully changed (AC displacing DC) and those that resisted change (the persistence of incompatible regional standards). The War of Currents demonstrated both momentum's reality and its limits. Edison's direct current system had achieved significant momentum by the mid-1880s—hundreds of utilities, thousands of trained workers, millions in invested capital, Edison's personal reputation and political