After a decade of overhauling University of Toronto’s Rotman School of Management, Roger Martin, the school’s dean, reaps glowing praise on the front of the New York Times business section. Martin is credited with seeing how management students need to learn critical and creative thinking, and not just finance and accounting. His ideas about deepening corporate cogitation look more relevant since last year’s market meltdown, which highlighted how mere number-crunching doesn’t prevent companies from making horrible mistakes.