Clayton Magleby Christensen (April 6, 1952 – January 23, 2020) was an American academic and business consultant who developed the theory of "disruptive innovation", which has been called the most influential business idea of the early 21st century. Christensen introduced "disruption" in his 1997 book The Innovator's Dilemma, and it led The Economist to term him "the most influential management thinker of his time." He was the Kim B. Clark Professor of Business Administration at the Harvard Busin…