Inside the Box: A Proven System of Creativity for Breakthrough Results
by Drew Boyd and Jacob Goldenberg
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"Principles in the book led directly to the creation of Poptropica, a kids' virtual world I helped launch in 2007, and helped me write fresh jokes for 'Diary of a Wimpy Kid' long after I'd exhausted my repository of childhood memories."
By the Book: Jeff Kinney · nytimes.com