Jonathan Chait doesn't believe Mitt Romney will really run for president. I don't, either. I mean, the guy might run the way Herman Cain or Donald Trump ran last time — as a vehicle of personal promotion. But Romney's not going to be the candidate. He was the C.E.O. President who could run the country like a successful business…but he couldn't parlay bad economic news for the Democrats into a victory. How's the G.O.P. going to let him try again when the news is better?