The first Republican debate takes place Aug. 6. The candidates are busy conducting mock debates, rehearsing ways to get their messages across, and studying their opponents for signs of weaknesses, preparing little zingers that will enable them to score points and distinguish them from the herd. Silly candidates: They should be studying tapes of The Apprentice. If they don’t, they may end up steamrolled by the chairman of Trump Organization. No one is going to be “fired” by Donald Trump on Aug. 6, but many will be singed — they will feel the flames of his forest-fire fury. “Do not...