Krugman!
1. It isn't just a case a case of postponing the inevitable. Boosting the economy now, when it is still well below full employment, makes dealing with the long term problems easier later. (If nothing else, boosting employment both increases revenues and cuts costs.) Letting the economy stay depressed, or making things worse (as austerity has done so so many other countries, such as Ireland,
http://www.calculatedriskblog.com/2010/06/ireland-austerity-in-action.html
Latvia
http://news.bbc.co.uk/2/hi/8496925.stm
etc.
Krugman is well aware of both the short and long term issues:
http://www.nytimes.com/2010/06/21/opinion/21krugman.html?_r=1&partner=rssnyt&emc=rss
2. Ferguson's analysis is flawed:
http://fistfulofeuros.net/afoe/economics-and-demography/david-takes-on-goliath-and-loses-the-ferguson-krugman-exchange/
http://delong.typepad.com/sdj/2009/05/this-is-getting-damned-annoying-will-i-ever-be-allowed-to-disagree-with-paul-krugman-again-about-anything-niall-ferguson-e.html
http://www.andrewpurcell.net/?p=375
Even I can tell that Krugman's logic was far more complete and backed by understanding that Ferguson's:
http://krugman.blogs.nytimes.com/2009/05/02/liquidity-preference-loanable-funds-and-niall-ferguson-wonkish/
http://krugman.blogs.nytimes.com/2010/06/14/the-bad-logic-of-fiscal-austerity/
3. Ferguson's predictions were wrong. He argued that the bond yields showed the market was concerned about inflation and that interest rates would continue to rise
http://www.slate.com/id/2219769
That was more than a year ago. Bond yields are back down - to about 3% on the 10 year notes
http://www.ustreas.gov/offices/domestic-finance/debt-management/interest-rate/yield.shtml
So even by his own logic, the markets are NOT worried inflation over the next 10 years.
4. And, as Brad Delong put it:
"If the past decade has taught me anything, it has taught me that mistakes are avoided if you follow two rules:
1. Remember that Paul Krugman is right.
2. If your analysis leads you to conclude that Paul Krugman is wrong, refer to rule #1."