Grasping Reality on TypePad, by Brad DeLong

...key papers... maths and rational expectations... member of Sweden’s equivalent of the Monetary Policy Committee from 2007 to 2013.... Svensson... argued that there was still plenty of slack in the economy, and raising rates would be deflationary, so that inflation would fall well below the central bank’s target of 2%. By the end of 2012 inflation had indeed fallen to zero, and since then monthly inflation has more often been negative than positive. It was -0.4% in September. This week the Swedish central bank lowered their interest rate to zero.... Deviating from what mainstream macroeconomists in general advocate (and what one in particular recommended) has proved a costly mistake. (Svensson estimates it has cost 60,000 jobs.)... I am certainly not claiming that mainstream macroeconomics is without fault, as regular readers will know (e.g.) However it is important to recognise the achievements of macroeconomics as well as its faults. If we fail to do that, then central banks can start doing foolish things, with large costs in terms of the welfare of its country’s citizens...