1. Nancy Duarte, “Avoiding the Road to Powerpoint Hell,” Wall Street Journal, January 22, 2011.

2. Nancy Duarte, Slide:ology: The Art and Science of Creating Great Presentations. (Cambridge, MA: O’Reilly, 2008), 92.

3. Edward Tufte, “PowerPoint Is Evil,” Wired 11 (2003), www.wired.com/wired/archive/11.09/ppt2_pr.html.