Bubbles are usually viewed as a threat to financial stability. This paper takes a more nuanced view. The world economy is going through an episode of Secular Stagnation, where the equilibrium rate of return on capital r is below the growth rate of the economy g. As is well-known, rational...

Economists have expended considerable effort to develop economically meaningful definitions of the somewhat elusive concept of "sustainability". We relate such a definition of sustainability to well known concepts from neoclassical economics, in particular, potential Pareto improvements (in the...

The Fiscal Theory of the Price Level (FTPL) is the claim that, in a popular class of theoretical models, the price level is sometimes determined by fiscal policy rather than monetary policy. The models where this claim has been established assume that all decisions are made by an...