Today's "information explosion" may seem like an acutely modern phenomenon, but we are not the first generation nor even the first species to wrestle with the problem of information overload. Long before the advent of computers, human beings were collecting, storing, and organizing information: from Ice Age taxonomies to Sumerian archives, Greek libraries to Dark Age monasteries. Today, we stand at a precipice, as our old systems struggle to cope with what designer Richard Saul Wurman called a "tsunami of data." With some historical perspective, however, we can begin to understand our predicament not just as the result of technological change, but as the latest chapter in an ancient story that we are only beginning to understand.