If you're reasonably competent with a spreadsheet, and you'd like to see for yourself how the CRU “cooked the books” to get the infamous hocky-stick graph, then this article is for you. Essentially it's a tutorial on how to manipulate the raw proxy temperature data (which is publicly available) to get essentially the same results the CRU did.
Even if you already understand, on an intellectual level, what the CRU did this is still an interesting exercise to see how it's done at a practical level. It's also a bit surprising how easy it actually is.
Also interesting is who came up with this tutorial: David Burge, better known to most people as IowaHawk, the master of satire!
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