Paul Romer's blog

Debate among economists about the $700 billion Paulson plan reveals a deep divide between realists and fundamentalists. If economists and policy makers pay attention to how the tension between these two positions plays out in this particular debate, it will help us know how to deal with it in other areas, including development.

The formal, model-based approach of the fundamentalists has contributed much to progress in economic analysis. At key junctures, it has also made important contributions to policy. The challenge is to maintain an intellectual environment that leaves space for a conversation with realists as well. In complicated policy contexts where models don't yet capture key forces, the realists have much to offer both policy makers and fundamentalist modelers. By giving voice to observations that strike realists as obvious but that are not accepted in conversations dominated by fundamentalists, the report by the Commission on Growth and Development could encourage a richer, more open debate about the policy options for poor countries.