ABSTRACT
The chapters in this book are examples of the expansion of economics into other social sciences, and of the reorientation of economics that is partly the consequence of that expansion. As a result of this activity, borders between the social science tribes have shifted and have become more porous. It is now time to ask, What borders are still there? In other words, what is distinctive about the economics tribe? If there are such distinctions, are they in the best interest of economics and of social science?
