Prager H3: Dennis talks to William Rosen, historian, former editor and publisher at Macmillan, Simon & Schuster, and the Free Press. His new book is The Most Powerful Idea in the World: A Story of Steam, Industry, and Invention. MA’s health care plan is a train wreck. And it’s headed our way. Colleges are finally starting to crack down on cheating. It’s all very high tech because the student’s techniques are so sophisticated.