"Ken Rogoff: And we need Orson Welles, is what you're saying.
Paul Krugman: No, there was a Twilight Zone episode like this in which scientists fake an alien threat in order to achieve world peace. Well, this time...we need it in order to get some fiscal stimulus."
I believe he should use sound, viable theories, not Rod Serling's version. Apparently he took the Science part of his Nobel Memorial Prize in Economic Sciences award a little too seriously.