简介 The �classification universe� is invisible to most of us, yet the production of governmental classified secret documents involves millions of people. And government secrecy is growing, vastly outpacing the circulation of open information. The statistics, as much as can be gathered, are staggering. In a single recent year, the United States government classified about five times the number of pages added to the Library of Congress; the cost is about eight billion dollars a year--just to keep secrets secret. Now, 70 years after the builders of the bomb created a national information security sys...