"The novel is a mirror that reflects the complexities of society, and the novelist is the one who polishes that mirror."
A good ad should be like a good sermon; it must not only comfort the afflicted, but also afflict the comfortable.
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。