任何人像刘伯伯那样使用资金做任何生意或投资都是极大概率要破产的，将个人的错误的责任推给市场是不理智的思维方式。

From Chapter 20 of Benjamin Graham's book The Intelligent Investor:

"Investment is most intelligent when it is most businesslike. It is amazing to see how many capable businessmen try to operate in Wall Street with complete disregard of all the sound principles through which they have gained success in their own undertakings. Yet every corporate security may best be viewed, in the first instance, as an ownership interest in, or a claim against, a specific business enterprise. And if a person sets out to make profits from security purchases and sales, he is embarking on a business venture of his own, which must be run in accordance with accepted business principles if it is to have a chance of success."