Does diversity influence innovation and economic growth? It depends on spatial scale
探讨多样性如何在不同空间尺度上影响创新和经济增长，发现多样性在精细尺度上效果最大，通过促进偶然互动来推动创新和信息交换。
Diversity has been thought to influence innovation and economic growth in many ways. The mechanisms proposed as underlying these relationships interestingly operate at different spatial scales. Differing estimates across levels of spatial resolution therefore provide empirical insight into the processes underlying regional differences in innovation, entrepreneurship, and economic growth. After discussing these mechanisms and why they operate at different spatial scales, this essay revisits a number of the existing studies of diversity through this lens. Diversity appears to have had the largest effects at fine-grained scales, suggesting that its economic value to regions emerges most strongly from facilitating innovation and information exchange through serendipitous interactions.