This paper identifies two types of market failures. The first concerns a coordination problem associated with panics. The problem in analysing this type of market failure from a policy perspective is that there is no widely accepted method for selecting equilibria. The second market failure...

This paper begins with the observation that the constrained maximisation central to model estimation and hypothesis testing may be interpreted as a kind of profit maximisation. The output of estimation is a model that maximises some measure of model fit, subject to costs that may be interpreted...