Jonathan L.S. Byrnes is a Senior Lecturer at MIT, where he has taught at the graduate level and in executive programs for over fifteen years. He has authored over one hundred books, articles, cases, notes, and expert submissions. He wrote a monthly column on managing profitability, called "The Bottom Line," in Harvard Business School's Working Knowledge e-newsletter for four years. Byrnes is also President of Jonathan Byrnes & Co., a consulting company. He has advised over fifty major companies and industry associations. He has served on the Advisory Boards of Objectiva Software and Autopart International, two companies that were acquired at a substantial gain, and he currently serves on the Advisory Boards of danoo, OCO, and WaveMark, all early-stage companies.