You could say if you read Krugman regularly this adds little.
On the other hand it's good to rehearse the arguments.
And on re-reading them I think it's a definite Krogman 1, Sachs 0
Recommended for that.
Richard Murphy on tax, accounting and political economy
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Re-reading Globalization and its Discontents By Joseph Stiglitz. Written in 2002 it laid out the shortcomings-moral, intellectual and economic-of the Washington Consensus.
It shows how little most of our politicians and economists have learnt in the last decade.