What If?: Serious Scientific Answers to Absurd Hypothetical Questions by Randall Munroe
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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