Nobel economist Paul Krugman wrote in the 6 September 2009 New York Times Magazine, How Did Economists Get it So Wrong?. It is a discussion of the re-emergence of Keynesian macroeconomics.
On 4 August 2009, SteveG kindly posted Krugman Lectures on the Depression containing URLs to three audio lectures (mp3) plus slides, which I emailed to him, given by Krugman at the London School of Economics (LSE) this summer. I am reposting those links here for your convenience.
Part I--The Sum of All Fears Audio: http://tinyurl.com/kj43gf Slides (pdf): http://tinyurl.com/n6gevo Part II--The Eschatology of Lost Decades Audio: http://tinyurl.com/mjvq65 Slides (pdf): http://tinyurl.com/lcavs7 Part III--The Night They Reread Minsky Audio: http://tinyurl.com/m4hww2 Slides (pdf): http://tinyurl.com/m92wpj
The New York Times Magazine article covers some of the material in the LSE lectures; therefore for those of you who don’t have the time, the technology, or the inclination to listen to the 3+ hours of lecture, you might wish to read the article and decide afterward whether you want the more thorough analysis.
In the interest of full disclosure, SteveG is not as impressed as I am with Krugman nor with Paul Samuelson; please see SteveG’s full post on the Krugman lectures plus SteveG’s additional post, How Milton Friedman Fooled the Economists, for his opinion.