"Listening is an act of participation."
"Character is more important than personality."
"The past is always present in the way we live now."
布莱克-斯科尔斯模型的美妙之处在于它将期权定价问题简化为估计几个关键参数,尤其是波动率。
如果我们把海洋视为无限资源,很快就会发现事实恰恰相反。