Today’s Washington Post reported on the security implications of a George Mason University grad student’s dissertation in which he has “mapped every business and industrial sector in the American economy, layering on top the fiber-optic network that connects them.” Again from the article: “He should turn it in to his professor, get his grade — and then they both should burn it,” said Richard Clarke, who until recently was the White House cyberterrorism chief. “The fiber-optic network is our country’s nervous system.”