In "The Race between Man and Machine: Implications of Technology for Growth, Factor Shares, and Employment," Acemoglu and Restrepo (2018b) combine the task-based model of the labor market with an endogenous growth model to model the economic consequences of artificial intelligence (AI). This...

We review Baumol's typology of productive, unproductive and destructive entrepreneurship. We argue that the typology is relevant for explaining the secular decline in business dynamics. To the existing explanations for this decline, we put forward the thesis that entrepreneurship has become less...