What If? Serious Scientific Answers to Absurd Hypothetical Questions: An Annotated and Illustrated 10th Anniversary Edition of a Masterpiece of Accessible Scientific Inquiry. In celebration of 10 years of unusual insight, Randall Munroe has revised his classic blockbuster to ask what if? x 10. The result is 10x the adventure of scientific inquiry. Featuring brand-new 2-color annotations and illustrations, this special anniversary edition is far more than a book for geeks, What If? explains the laws of science in operation in a way that every intelligent reader will enjoy and feel much smarter for having read.