From the Economist
Inside the sausage factory
“THE less people know about how laws and sausages are made, the better they sleep at night.” That comment, attributed to Bismarck, could equally apply to the Intergovernmental Panel on Climate Change. The IPCC’s reports, published every six or seven years, are immense undertakings. Each depends on the unpaid work of hundreds of scientists and runs to thousands of pages. But most of the controversy is generated at the last minute, when the authors (scientists and academics) meet government officials to produce a summary of 30 or so pages. Consider the recent report, published in Berlin on April 13th, on efforts to rein in greenhouse-gas emissions.
The process was described by one participant as “exceptionally frustrating” and by another “one of the most extraordinary experiences of my academic life”. It works as follows. The authors write a draft summary. Each sentence of the draft is projected onto a big screen in a giant hall. Officials then propose changes to the text; authors decide whether the changes are justified according to the full thousand-page report. Eventually a consensus is supposed to be reached, the sentence is approved or rejected, the chairman bangs a gavel and moves on to the next sentence.
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