Want to read all pages of What If? pdf just visit this link : br What If? pdf br br Author : Randall Munroe br br Plot : The creator of the incredibly popular webcomic xkcd presents his heavily researched answers to his fans' oddest questions, including “What if I took a swim in a spent-nuclear-fuel pool?” and “Could you build a jetpack using downward-firing machine guns?” 100,000 first printing.