when it comes to innovation, most companies have a barn-sized blind spot. Perversely, the sorts of innovation that are least likely to produce long-tern competitive advantage-operational innovation and produce innovation-are those that get ghe most attention. Yet if you accept the lessons gleaned from 700 years of military conflicr and a century-plus of intustrsil competition, it us management innovation that yields the biggest, longesr-lasting performance advantages.