4 Economists refer to this as “mean reversion.” If we knew that this sawtooth pattern would  4  Don Coletti, “The long-run behaviour of key Canadian non-energy commodity prices: 1900 to 1991.”Bank of Canada Review (Winter 1992–1993): 47–56.
24  See Whither Monetary and Financial Stability? The Implications of Evolving Policy Regimes, article by C. Borio and W. White, BIS, 2004. 25  See The Greenspan Era: Lessons for the Future, speech by R. Rajan, IMF, August 2005. 26  K. Rogoff (2006), op. cit.