The best shtick going on CNN this election season is its wall-sized touch-screen interactive map of these United States. Lou Dobbs last night called it a "magic board," about which claim Wolf Blitzer was politely skeptical: "I don't know if it's magic, but it's very, very sophisticated." Let's split the difference and call it nifty. At the board, chief national correspondent John King would call up county-level results in Texas or project what advantage Hillary Clinton could gain in delegates by winning some caucus by such-and-such a margin. The board is an impressive tool, and the only catch is that CNN mostly uses it to demonstrate exactly how impressive the board is.