Michael Lopp (12 June 2007), “Chapter 25: A Nerd in a Cave” , Managing Humans: Biting and Humorous Tales of a Software Engineering Manager, Apress , p. 143, ISBN   978-1-59059-844-3 , http://www.randsinrepose.com/archives/2006/07/10/a_nerd_in_a_cave.html , "[The Zone] is a deeply creative space wher...