Yottabytes and exaflops, septillions and undecillions?the race for computing speed and data storage goes on. In his 1941 story ?The Library of Babel,? Jorge Luis Borges imagined a collection of information where the entire world?s knowledge is stored but barely a single word is understood. In Bluffdale the NSA is constructing a library on a scale that even Borges might not have contemplated. And to hear the masters of the agency tell it, it?s only a matter of time until every word is illuminated.