The Book of General Ignorance round differs, in particular during the Christmas specials. During the course of the "B" Series special, Fry and Davies swapped places for "General Ignorance", with Fry attempting to answer questions ostensibly written by Davies to stump him. During "D"s Christmas Special, all the "GI" questions revolved around saints. "The Book of General Ignorance" contains a list of 230 questions, most of which previously appeared in episodes of "QI". Each question explains the correct answer, and usually attempts to show why people tend to make the wrong assumptions, or believe certain myths. Each book contains two forewords, one by Fry, the
One World or None "One World or None" was critically reviewed in the "New York Herald Tribune" "Book Review", March 17, 1946: "An illuminating, powerful, threatening and hopeful statement which will clarify a lot of confused thinking about atomic energy.” The original edition sold 100,000 copies. Quickly rising to the top of "The New York Times" bestsellers' list, the book spawned the short film of the same name. Philip Ragan Productions was responsible for "One World or None", using a mix of animation and live-action stock footage, including scenes from Hiroshima and the Nuremberg War Trials. Philip Ragan was a filmmaker from Philadelphia who