““When the French high command had got wind of the German Schlieffen Plan prior to World War I, their reaction had been, “So much the better for us!” That assault had barely ground to a halt outside Paris. In 1940, the same high command had greeted initial news of another German attack with smiles—and that attack had ended at the Spanish border. The problem was that people tended to wed their ideas more faithfully than their spouses, and the tendency was universal. It””