艺术不在于你看到了什么,而在于你让别人看到了什么。
I think it should be called a lie because a pig is not like a day and people do not have skeletons in their cupboards.
理解布莱克-斯科尔斯模型的关键在于认识到它是基于风险中性世界的概念,在这个世界中投资者对风险漠不关心。