A Simple Model of Herd Behavior

翻譯成羊群行為，簡單講就是盲從，如果路上兩個人在排隊就會有第三個人陸陸續續在排隊。
Abhijit V. Banerjee, "A Simple Model of Herd Behavior," The Quarterly Journal of Economics, Vol. 107, No. 3, pp. 797-817