布莱克-斯科尔斯公式的美妙之处在于它仅依赖于一个不可观测的参数,即股票的波动率。
Every product should be designed with its next life in mind.
Only a life lived for others is a life worthwhile.
今天很残酷,明天更残酷,后天很美好,但绝对大部分是死在明天晚上,所以每个人不要放弃今天。