I've been sitting on this awhile to see how things shook out. It looks like the end is nigh though for poor Mr. Mann and his silly little hockey stick. Good riddance too! The paper linked through WUWT is set to be published in the next volumne of the Annals of Applied Statistics. A brief review here... "This paper is a direct and serious rebuttal to the proxy reconstructions of Mann. It seems watertight on the surface, because instead of trying to attack the proxy data quality issues, they assumed the proxy data was accurate for their purpose, then created a bayesian backcast method. Then, using the proxy data, they demonstrate it fails to reproduce the sharp 20th century uptick." http://wmbriggs.com/blog/?p=2773 The whole enchilada is here. Watts Up With That?