assume that most of the technology that has existed for the past fifty years will serve us for another half-century. And assume that recent technology will be passé in a few years’ time. Why? Think of these inventions as if they were species: whatever has held its own throughout centuries of innovation will probably continue to do so in the future, too. Old technology has proven itself; it possesses an inherent logic even if we do not always understand it. If something has endured for epochs, it must be worth its salt. You can take this to heart the next time you are in a strategy meeting.