Could cyberwar knock us back to the Stone Age?

If the United States were involved in a major cyberwar, just how badly would it be hit? Could the U.S. survive? Could modern civilization survive? In this thought experiment, David Gewirtz explores such a scenario in-depth.

http://www.zdnet.com/article/could-cyberwar-knock-us-back-to-the-stone-age/?tag=nl.e566&s_cid=e566&ttag=e566&ftag=TRE49e8aa0