「明確に定義されていない問題に対して、問題が明確に定義されていることを前提とする手法は使えない」
1987 Peter Rowe(professor at the Harvard Graduate School of Design) "Design Thinking"
1991 IDEO創業
2000 IDEOのCEOがDavid Kelley→Tim Brown
2002 David Kelley: Human-centered design | TED Talk | TED.com
2004 David Kelley "Hasso Plattner Institute of Design at Stanford University"(aka "d.school")を作る
2006 Tom Kelley(David Kelleyの弟) "The Ten Faces of Innovation: IDEO's Strategies for Beating the Devil's Advocate and Driving Creativity Throughout Your Organization" #トム・ケリー
2007 Tom Kelley+ "The Art of Innovation: Lessons in Creativity from IDEO, America's Leading Design Firm"
2008 Tim Brown: Tales of creativity and play | TED Talk | TED.com
2009 Tim Brown "Change by Design: How Design Thinking Transforms Organizations and Inspires Innovation"
2009 Tim Brown: Designers -- think big! | TED Talk | TED.com
2012 David Kelley: How to build your creative confidence | TED Talk | TED.com
2013 Tom Kelley, David Kelley "Creative Confidence: Unleashing the Creative Potential Within Us All"