This bold re-examination of the history of U.S. economic growth is built around a novel claim, that productive capacity grew dramatically across the Depression years (1929-1941) and that this advance provided the foundation for the economic and military success of the United States during the...

In several articles published in the 1990s, de Long and Summers argued that investment in producer durables had a high propensity to generate externalities in using industries, resulting in a systematic and substantial divergence between its social and private return. They maintained, moreover,...