Alan Blinder, former vice chairman of the Federal Reserve and now professor at Princeton University, argues that “a central bank that speaks with a cacophony of voices may, in effect, have no voice at all”. 29 There is also another argument in favour of unanimous decisions. Central banks are important social institutions, which should not be too closely linked to individuals but have a  27  See Alan S. Blinder (2007): “Monetary policy by committee: Why and how?”, in European Journal of Political Economy, 23, no. 1, pp. 106-127 and Alan S. Blinder (2008): “On the design of monetary policy committees”, Norges Bank Working Paper, 2008/6. 28  The Executive Board at Norges Bank consists of seven members, appointed by the King in Council. The Governor and Deputy Governor serve as chairman and deputy chairman, respectively, of the Executive Board. They are appointed to full-time positions for a term of six years. The other five members are appointed for four-year terms and are not employees of Norges Bank. 29  Alan S. Blinder (2007): “Monetary policy by committee: Why and how?”, in European Journal of Political Economy, 23, no. 1, p. 114. BIS Review 140/2009  7  public identity. The institution and its mandate should take precedence over the individuals who occupy positions for limited periods. 30 There is no formula for deciding which system is best. Each system has its strengths and weaknesses. Detailed meeting minutes ensure accountability among committee members. This may give rise to good incentives.
Through the years, the phrase has been simplified into “as safe as the bank”. As banks and central banks store gold and money in their vaults, their edifices have always been solid, protected by thick walls. In a figurative sense, it might be said that a safe and credible national monetary value relied for a long time on thick central bank walls insulating its internal workings from the general public. Until our time, central banks have been closed, both physically and figuratively. Central banks were shrouded in an aura of mystique, which they probably had a hand in perpetuating. Central bank governors worldwide refrained from saying too much, and what they did say often sounded cryptic. 1  The duty of confidentiality for Norges Bank employees is laid down in Section 12 of the Norges Bank Act. Violation of the duty of confidentiality is punishable under the General Civil Penal Code: “Any person who wilfully or through gross negligence violates a duty of secrecy which in accordance with any statutory provision or valid directive is a consequence of his service or work for any state or municipal body shall be liable to fines or imprisonment for a term not exceeding six months” (Section 121, first paragraph of the General Civil Penal Code).