I just found this article on the web, regarding Economy, Government and Policy. LETTERS Inflation Signals and Fed Policy Published: March 5, 2011 To the Editor: Re âThe Debate Thatâs Muting the Fedâs Responseâ (Economic View, Feb. 27), in which Christina D. Romer described the current dispute over inflationâs causes: Ms. Romer classified herself among the empiricists in this debate, citing evidence that the main determinants of inflation are past inflation and unemployment. So letâs try this number on for size: In the 12 months through January, the Producer Price Index has risen 3.6 percent Companies are reluctant to pass along price increases for now, but at some point they will either have to do so or go bankrupt. Then we will see inflation greater than the 2 percent that the column described as the Fedâs implicit target. George Thomas Warren, N.J., Feb. 28 A version of this letter appeared in print on March 6, 2011, on page BU2 of the New York edition.