This article examines systematically the growth of the English language from the year 252 ce through 1985. Using a data set collected from the CD-ROM version of the second edition of the Oxford English Dictionary, we characterize the time series of new words added to the language, by year,...

Innovation enables monopolists to lower their costs, expand their outputs, and reduce their prices. It is conventional to conclude that social welfare unambiguously increases as a result. Assuming linear demand and marginal cost, this paper shows, however, that innovation raises the opportunity...