Roger Martin, a strategic advisor and former dean of the University of Toronto’s Rotman School of Management, has been named the world’s leading business thinker by Thinkers50, a London-based consulting firm. Thinkers50 was founded by business consultants and authors Stuart Cranier and Des Dearlove — they started the Thinkers50 ranking in 2001. Since then, they’ve published it every two years. Thi