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What If?: Serious Scientific Answers To Absurd Hypothetical Questions Staff_Choice the methods are precise andTHE SUNDAY TIMES BESTSELLER From the creator of the wildly popular xkcd. com, hilarious and informative answers to important questions you probably never thought to ask. Millions visit xkcd. com each week to read Randall Munroe's iconic webcomic. Fans ask him a lot of strange questions: How fast can you hit a speed bump, driving, and live? When (if ever) did the sun go down on the British Empire? When will Facebook contain more profiles of dead people