Although the two boards are close with respect to accounting principles, they diverge on actual rules regarding how to recognise bad debt and book changes in the fair value of loans.

虽然这两个委员会在会计准则方面联系非常密切，他们在关于如何辨别坏账和贷款的公证价格的预订更改的实际操作产生分歧。

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The cost principle is based on the assumption that cost is equal to fair market value at the date of acquisition and subsequent changes are not relevant to it.

成本原则假设成本等于资产购置时的公平市价，因此，取得以后市价的变动对成本全无影响。

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The fair value of financial instruments included in current changes in the profit and loss, not only makes up the profits for listed companies but also has a decisive impact on the net profit;

金融工具的公允价值变动计入当期损益，不但增加了我国上市公司收益的波动性，整体而言对净利润影响也举足轻重；

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If any of the variables change, Fair Value changes overnight.

FORBES: It's Time To Sell Strength To Risky Levels

You can freely play around with this model and see how the changes affect the "fair value" share price.

FORBES: Intelligent Investing