“Do not try any of this at home. The author of this book is an Internet cartoonist, not a health or safety expert. He likes it when things catch fire or explode, which means he does not have your best interests in mind. The publisher and author disclaim responsibility for any adverse effects resulting, directly or indirectly, from information contained in this book.”
– Disclaimer, What If?: Serious Scientific Answers to Absurd Hypothetical Questions
What if everyone on earth jumped up and down at exactly the same time? No, seriously – what would really happen? What would happen if you tried to hit a baseball pitched at nearly the speed of light? What if you tried to build a periodic table of the elements out of the actual elements comprising it? I don’t know. Of course I don’t know. But I know who you can ask.
Randall Munroe, a former NASA roboticist and now full-time self-employed internet cartoonist, spends a great deal of time putting his well-honed scientific mind to work on the What If blog section of his wildly popular site, xkcd.com, where users submit strange hypothetical questions that he does his best to answer as scientifically as possible. Munroe has kept this blog active for so long that he has now collected enough material to fill a book – one that proves both insightful and hilarious to read.