Technological change (TC) describes the process of invention, innovation, and adoption of new technologies. It is viewed as a social process influenced by cultural, economic, and political factors. New technologies diffuse through social systems over time according to factors like their advantages, communication channels, and rates of adoption. Technological transitions represent major shifts to new socio-technical systems as old technologies are replaced. Technological change can occur through anticipated planning, emergent local innovations, or opportunistically in response to new opportunities.