Innovation and the theory of fields.

Innovation does not just involve the creation of new products, but also includes the need for new kinds of processes and organizations. Field theory can help us understand why some innovations are more piecemeal and others more revolutionary. It explicitly links innovation to the process of the emergence, adjustment, and transformation of markets (conceived of as fields). To illustrate this perspective, the case of the transition in the U.S. from a mortgage market dominated by savings and loan banks to the emergence of mortgage securitization dominated by the government sponsored enterprises and the largest private banks, is explicated. Field theory helps us understand the logic of this transition and the myriad players and innovations that helped produce a large part of what we consider to be modern finance. The case also shows the limits of economic theories of financial innovation and the sociology of finance. I end with a discussion of how field theory can inform subsequent research on innovation. [ABSTRACT FROM AUTHOR]