你永远不会太老而不能设定另一个目标或做一个新的梦。
A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.
处置效应是行为金融学中最稳健的现象之一,投资者倾向于过早卖出赢家,而过久持有输家。