The stories of the the safety bicycle, the first truly synthetic plastic, and the fluorescent light bulb—each a fascinating case study in itself—reflect a cross section of time periods, engineering and scientific disciplines, and economic, social, and political cultures. The bicycle story explores such issues as the role of changing gender relationships in shaping a technology; the Bakelite story examines the ways in which social factors intrude even in cases of seemingly pure chemistry and entrepreneurship; and the fluorescent bulb story offers insights into the ways in which political and economic relationships can affect the form of a technology.
Bijker's method is to use these case studies to suggest theoretical concepts that serve as building blocks in a more and more inclusive theory, which is then tested against further case studies. His main concern is to create a basis for science, technology, and social change that uncovers the social roots of technology, making it amenable to democratic politics.