What If?: Serious Scientific Answers to Absurd Hypothetical Questions by Randall Munroe
Hypothetical questions can be tantalizing and fascinating. Unfortunately, as is their nature, they often go unanswered. However, Randall Munroe is making a dent in humanity’s knowledge of the hypothetical by answering such questions as: what would happen if you tried to hit a baseball going 90% the speed of light, or could you make a jetpack out of a series of downward firing machine guns? Learn More