Hot Spots and Blind Spots: Geographical Clusters of Firms and Innovation
构建演化模型，对比同一行业内热点集群与非热点集群企业，指出集群初期促进创新，但后期同质化宏观文化抑制创新，使集群企业更易受环境冲击。
Hot spots are fast-growing geographic clusters of competing firms. Drawing on several literature streams, we develop an evolutionary model that contrasts hot spot and non-hot spot competitors within the same industry. Initially, economies of agglomeration, institutional forces, and managers' mental models create an innovative environment within the hot spot. Over time those same forces create a homogeneous macroculture that suppresses innovation, making hot spot competitors more susceptible than non-hot spot competitors to environmental jolts.