The Place of Monetary Policy

What I have been missing in national politics for as long as I have been alive is legitimate discourse.  The challenge of ideals with ideas and serious debate.  What seems to be slightly easier to find are well reasoned debates between influential economists.  Because it relates directly to what we have learned recently in Macroeconomics, this post by Paul Krugman on monetary policy is the most current repartee in a century old argument over monetary policy.  Granted it may have no effect in a liquidity trap, a temporary condition is no reason to scrap an entirely useful tool.