This is a story without end. All the world is still an America. The most promising words ever written on the maps of human knowledge are terra incognita—unknown territory.

once a Memex user had created an associative trail, he or she could copy it and exchange it with others. This meant that the construction of trails would quickly become a community endeavor, which would over time produce a vast, ever-expanding, and ever more richly cross-linked web of all human knowledge.