A little over a year ago, when Ben Carson was gearing up to run for president, I questioned in this space whether he was ready for what lay ahead. We now have our answer: No. Carson had a great number of things going for him: his amazing life story, charm, professional accomplishments, eloquence and courage. I had only one major concern: "While he speaks eloquently and passionately about the importance of doing homework in his own life and for children everywhere, it's not obvious he's taken those lessons to heart when it comes to politics." It's now obvious that he...