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If you have taken a class in entrepreneurship recently from the top business schools of the world, chances are that many of the lessons taught were not based on sound knowledge. Worse, it is likely that some of the content was nothing but platitudes, good wishes, or simply illusions: mediocre knowledge sold at the price of gold.

Once an obscure elective that attracted few students and generated little academic interest, entrepreneurship research and education has exploded since the internet bubble made start-ups a beacon of light for ambitious youngsters, and, for the first time in the history of Harvard, entrepreneurship became the most popular career choice a few years ago. Today, students see it as a valid alternative to a classic corporate ladder, and schools use it as a differentiation mechanism: get our MBA, we will teach you how to be a successful entrepreneurial leader, not an ordinary manager.