What have the economists ever done for us?

BOE’s Haldande on economists and the blame game with regards to the financial crisis. From Voxeu.

There is a long list of culprits when it comes to assigning blame for the financial crisis. At least in this instance, failure has just as many parents as success. But among the guilty parties, economists played a special role in contributing to the problem. We are duty bound to be part of the solution (see Coyle 2012). Our role in the crisis was, in a nutshell, the result of succumbing to an intellectual virus which took hold of the body financial from the 1990s onwards.

One strain of this virus is an old one. Cycles in money and bank credit are familiar from centuries past. And yet, for perhaps a generation, the symptoms of this old virus were left untreated. That neglect allowed the infection to spread from the financial system to the real economy, with near-fatal consequences for both.

In many ways, this was an odd disease to have contracted. The symptoms should have been all too obvious from history. The interplay of bank money and credit and the wider economy has been pivotal to the mandate of central banks for centuries. For at least a century, that was recognised in the design of public policy frameworks. The management of bank money and credit was a clear public policy prerequisite for maintaining broader macroeconomic and social stability.

Two developments – one academic, one policy-related – appear to have been responsible for this surprising memory loss. The first was the emergence of micro-founded dynamic stochastic general equilibrium (DGSE) models in economics. Because these models were built on real-business-cycle foundations, financial factors (asset prices, money and credit) played distinctly second fiddle, if they played a role at all.

Full article here.