An informal model is described that leads to multiple macroeconomic equilibria as a consequence of random variation in the relative amounts of technological change for new and existing goods. The novel observation is that the rate of introduction and market penetration of new goods vis-a-vis...

Conventional analysis of public goods provision aggregates individual willingness to pay while treating income as exogenous, ignoring the fact that we generate income to allow us to purchase utility-generating goods. We explore the implications of endogenizing the labor-leisure decision by...