Nancy Duarte is the CEO of Duarte, Inc. She teaches workshops on the art of presenting and is the author of two award-winning books:Slide:ology and Resonate. Bryan A. Garner is a leading authority on writing, grammar, usage, and style. He is the author of many books on writing, including the best-selling reference workGarner’s Modern American Usage. He is also editor in chief of the world’s most frequently cited lawbook,Black’s Law Dictionary. Karen Dillon is a coauthor of the New York Times bestsellerHow Will You Measure Your Life? (with Clayton M. Christensen and James Allworth). She is the former editor ofHarvard Business Review and is now a contributing editor.