KNOWLEDGE CREATION AS A SQUARE DANCE ON THE HILBERT CUBE*
构建了一个微观模型，研究一群人互动中的知识创造过程。模型发现，在多种初始条件下，均衡过程会收敛到最高效状态，即人口分成最优规模的小组，且组内紧密互动。最优规模随知识异质性重要性增大而增大。
This article presents a micromodel of knowledge creation through the interactions among a group of people. The model features myopic agents in a pure externality model of interaction. Surprisingly, for a large set of initial conditions we find that the equilibrium process of knowledge creation converges to the most productive state, where the population splits into smaller groups of optimal size; close interaction takes place within each group only. This optimal size is larger as heterogeneity of knowledge is more important in the knowledge production process. Equilibrium paths are found analytically; they are a discontinuous function of initial heterogeneity.