A gold rush theory of economic development

This paper presents a model of social learning about the suitability of local conditions for new business ventures and explores its implications for the microeconomic patterns of economic development. I show that: i) firms tend to ‘rush’ into business ventures with which other firms have had surprising success thus causing development to be ‘lumpy’; ii) sufficient business confidence is crucial for fostering economic growth; iii) development may involve wave-like patterns of growth where successive business ventures are first pursued and then given up; iv) there is, nevertheless, no guarantee that firms pursue the best venture even in the long-run.