This morning’s quiz was almost aggressively simple: name the new non-fiction book that was so mesmerizing that I nearly missed my lunch date. Your answers were, as always, pretty sensible: The Audacity of Hope, Infidel, Wikinomics, Survival of the Sickest, Blind Side, Pistol, The Race Beat, US Guys, Oil on the Brain, Size Matters, Stumbling on Happiness. What really surprised . . .