The world now glories in dozens of would-be Silicon Valleys: Silicon Alley in New York, Silicon Glen in Scotland and even, depressingly, Silicon Roundabout in London.

• 几十个山寨版的硅谷遍布世界：纽约的硅巷，苏格兰的硅溪谷，甚至，让人扫兴的，伦敦的硅环道。