The Impact of New

Closed-system circular flow models have been ubiquitous in economics for at least half a century. Because these models account for neither new-product R&D, nor the attendant leakages and injections, they obscure understanding of (a) the distinction between new-product and process R&D, (b) the circular flow leakages and injections attending new-product R&D, and (c) Schumpeterian “creative destruction” and “swarming.” To shed light upon these matters, we present an open-system circular flow model and a price theoretic explanation of the swarming overinvestment that characterizes business cycle downturns. JEL Classifications: B20, O31, E3