Why Ben has no chance. Even the folks at Red State Blog have doubts about his qualifications:

(from a BBC article)

Leon Wolf, a diarist for the conservative RedState blog, wonders whether Mr Carson’s apparent lack of command of the issues reflects poorly on his commitment to the campaign

“I am distressed that he has spent apparently no time in study educating himself on the basic issues he would face during the course of the run for his presidency,” he writes. “I am 100% confident Carson could understand them very easily, which is precisely the reason I’m so bothered that he doesn’t. It goes to the seriousness with which he takes the job of running for president, and his personal work ethic at that job.”