I chose 22 because I thought that most people would play the game dividing by two-thirds a couple of times, and give numbers averaging around the low 30's.

我选了22因为我想大多数人在游戏中,可能会多次求平均数的2/3,最后会得出30以下的数

耶鲁公开课 - 博弈论课程节选