It is often said that a country that has experienced civil war has nearly a 50 percent risk of sliding back into war within five years. This has been widely cited in the academic literature and in policy debates, including in UN documents and preparatory work for the establishment of the UN Peacebuilding Commission. A closer examination of the origins, circulation, and establishment of this figure gives a glimpse into the process whereby academic findings are converted into conventional wisdom and effectively inserted into the policy debate, even though the findings themselves are unstable. In this case, the authors of the original figure revised their initial 50 percent estimate down to around 20 percent only four years after their first study, but the change was barely noted. This article examines the process whereby the findings were made, and offers a note of caution about the wholesale adoption of such figures by policymakers and academics.
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