Thank you buddy,
I couldn't agree with you more.

There is a default assumption for any quantitative model:
History repeats itself again and again...

Sometimes it is right, sometimes is not.

Qualitative model is actually kind of reasoning embedded with more complexity.
Before we could standardize all relevant intelligence,
before we could collect all relevant information,

Intuition derived from professional judgement will prevail.

We have done this a lot before PC steps into our situation room.  
Thank you buddy.

有道理，首先我建议你把CFA考了吧

U r welcome. 很多人都说金融是个高端行业，赚钱多，快。但很多人都忽略了一个统计现象：全世界这么多人在搞金融，但有多少个巴菲特？有多少个索罗斯？有多少个彼特.林奇？这些“***”的牛人都是万种无一，甚至可以说是亿中无一。大多数玩金融的都输得很惨，但我们几乎没注意这些输家。所以，金融还是很难的。就因为这个，所以能玩弄金融于股掌的就寥寥无几了，这些人都是绝顶聪明的。所以，金融是一门艺术。这门艺术深奥、苦涩、难懂。欢迎你的批评。Thank u.

我以前有这个打算。过了CFA，专业水平一定会得到大大的提高。不过现在不这样想了，因为学一门知识不一定要通过考试。不过，还是谢谢你的建议。Thank u.