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
Grandad (Only Fools and Horses) photograph of Grandad during the war. When Del asks why Grandad is wearing a vest and plimsolls, Albert answers 'Well, he'd just deserted.' After the war, Grandad had various short-term jobs before he retired, including working as a security officer at a warehouse in Chingford which he was sacked from after a janitor stole over three hundred briefcases from under his nose. His wife, who apparently worked as a char-lady in these later years died when Rodney was still young. It is revealed in "Tea For Three", by Grandad's younger brother Uncle Albert (played by Buster Merryfield), that he and