The Economics of Witchcraft and the Big Eye Effect
研究了嫉妒（巫术）对团队生产力的破坏性影响，发现存在折叠突变和大眼效应，即嫉妒加剧导致生产力骤降，随后恢复，可用于改善团队管理。
Witchcraft is one of the manifestations of envy. It has disruptive effects on team work. A fold catastrophe is shown to exist between the degree of envy and the productivity of the witch's victim. The big eye effect is the discontinuous dip in productivity, driven by an increase in envy. There is a cycle between envy and the productivity of the witch's victim. Witchcraft damages team work until the point at which the productivity of the witch's victim falls. When this happens, the witch's envy decreases and a recuperation to the former levels of productivity occurs. The model can be applied to improve team work management.