The root cause of the crisis was a widespread undervaluation of risk. This included an underpricing of the unit of risk and an underassessment of the quantity of risk that financial operators took upon themselves. Several policymakers had indicated during 2006 and early 2007 that market participants needed to prepare for a significant correction. As chairman of the global economy meetings of central bank governors, I myself reported my colleagues' sentiments on this matter. At the same time, several financial stability reports, including from the European Central Bank, the Bank for International Settlements, the Financial Stability Forum and other organisations, had analysed vulnerabilities and warned of the emerging weaknesses.
此次危机的根源在于风险被广泛低估，其中包括单位风险定价过低，以及金融业经营者自身承担的风险数量被低估。2006年至2007年初，几位决策者曾指出，市场参与者需要为大幅回调做准备。作为由央行行长参加的manbetx app苹果 manbetx20客户端下载 会议的主席，我本人曾述说过我的同事们对这一问题的看法。同时，一些金融稳定报告（包括欧洲央行(ECB)、国际清算银行(BIS)、金融稳定论坛(Financial Stability Forum)以及其它机构的报告）对市场脆弱性进行了分析，并对正在出现的薄弱之处提出了警告。