"As long as excessive debt is not digested, both monetary and fiscal policies are inefficient. There is not much of an alternative. Either to let the economy collapse, in order to reduce debts, and then use fiscal policy to revive it, or inundate the insolvent economy with public credit, to avoid the collapse, and loose the ability of fiscal policy to pull it out of a prolonged lethargy. Either a horrible end or an endless horror."
After the Crisis: Macro Imbalance, Credibility and Reserve-Currency: André Lara Resende
Well, I think the title to this post makes my view on the high-profile shenanigans we are currently witnessing on the part of two widely respected contemporary intellectuals clear enough, even if Paul would probably respond that he is perfectly well able to take care of himself, thank you very much. Nonetheless, looking at the way the tone of his most recent and most public debate with Niall Ferguson has deteriorated (yes, it is Niall I'm talking about here, and not Sir Bobby, although sometimes even I have my doubts), let me confess, I am not entirely convinced on this point (Niall Ferguson's argument can be found summarised in his Financial Times Op-Ed here, and in his rejoinder letter to Martin Wolf reproduced by the FT Alphaville's ever interesting Izabella Kaminska here, while Paul Krugman's "input" to the debate can be found here, here, and here).
So, since the thunder and lightening that such high profile exchanges generate tends to obscure more than it reveals, let me be so bold as to add my own 2 centimes worth - even if, apologies in advance, the whole affair ends up being most terribly "wonkish". If you want to save yourself a good deal of trouble, and heart searching, the central point is a simple one: are long term US interest rates rising because investors are worrying about having to buy so much public debt (as K would point out, what else were they thinking of doing with the money - which isn't really "money" at all, but, oh, never mind), or are they rising because investors expect the time path of US short term interest rates to move steadily upwards? It's as easy, or as hard, as that. So now, you decide!