Marc J. Rosenberg (www.marcrosenberg.com) is a management consultant in training, organizational learning, e-learning, knowledge management, and performance improvement. He worked in academia, corporations, and professional services firms before launching his own consultancy. A prolific author and popular speaker with more than 25 years' experience, Dr. Rosenberg is a former president of the International Society for Performance Improvement. He lives in Hillsborough, New Jersey, U.S.A.