On the last Wednesday in May, a freight train pulled into London and set off a shredded paper celebration of the reopening of the old silk road. The train had during the previous 18 days carried a load of freight from central China through Pakistan and Russia and under the English Channel. China viewed the achievement as a public relations home run. European experts were not quite so sure. This new (old) trade route was half the price and time of sending packages air mail. It was twice as fast as shipping over the water. It stopped short, however, of wowing ...