The Book of General Ignorance was released in the UK a year after "The Book of General Ignorance", on 4 October 2007. An audiobook adaptation called "The Sound of General Ignorance" was scripted and read by the authors on 4 November 2008. On 25 December 2008 an extended version of the book, entitled "The Noticeably Stouter Edition", was published to coincide with "QI" moving to BBC One. This new version included new facts, quotes from the show, a list of all the episodes made at the time, an index, and a new collection of "Four words" from Davies. On 1 November 2007 another "QI" spin-off
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