FEDERAL RESERVE chairs like to leave a mark(留下印记，产生深远影响). Ben Bernanke, in charge during the global financial crisis of 2007-09, ushered in(开创，引入) a formal inflation target and changed how the Fed talked to the world by making its deliberations less opaque(不透明的，难以理解的). In 2015 his successor, Janet Yellen, raised interest rates after seven years near zero. Jerome Powell, who came next, launched the Fed’s first comprehensive review of its monetary-policy framework.(杰罗姆·鲍威尔随后上任，启动了美联储对其货币政策框架的首次全面审查。)
美联储主席们都喜欢留下自己的印记。本·伯南克在2007-09年全球金融危机期间掌舵，引入了正式的通胀目标，并通过减少决策过程的不透明性改变了美联储与外界沟通的方式。2015年，他的继任者珍妮特·耶伦在利率接近零长达七年之后提高了利率。接下来上任的杰罗姆·鲍威尔则启动了美联储对其货币政策框架的首次全面审查。
Kevin Warsh, the new chair, also has big ideas. One is to limit how much of its internal deliberations the Fed reveals, on the grounds that public pronouncements subsequently may make it harder for policymakers to revise their views.(其一是限制美联储公开内部讨论的程度，理由是公开表态日后可能使政策制定者更难修正自己的观点。) Another is to subject the Fed to more open external scrutiny(详细审查，监督). To that less controversial end, on July 9th Mr Warsh announced the formation of five task-forces which will review critical areas of monetary policy.
新任主席凯文·沃什也有大手笔。其一是限制美联储公开内部讨论的程度，理由是公开表态日后可能使政策制定者更难修正自己的观点。其二是让美联储接受更开放的外部审视。为了这个争议较小的目标，沃什于7月9日宣布成立五个工作组，负责审查货币政策的关键领域。
Such brains trusts(智囊团，专家小组) are not a new idea. In 2014 Mr Warsh, who served as a Fed governor in the financial crisis, was himself invited by the Bank of England to join one reviewing its communication practices. But whereas his predecessors at the Fed have always listened to leading figures in academic economics, business and finance behind closed doors, Mr Warsh has handed them a microphone.(但与其前任们总是在闭门会议中听取学术界、商界和金融界领军人物意见不同，沃什给了他们一个麦克风。)
这种智囊团并非新概念。2014年，曾在金融危机期间担任美联储理事的沃什本人就曾应英国央行之邀加入过一个审查其沟通实践的智囊团。但与其前任们总是在闭门会议中听取学术界、商界和金融界领军人物意见不同，沃什给了他们一个麦克风。