The visionary Ted Nelson envisions a two-way hypertext system (already envisioned by Vannevar Bush). He calls it Xanadu. In practice, every single piece of information published on a global computer network would be published with the address it points to, as well as the address from which it points. If his vision had been implemented on the World Wide Web, it would have given rise to a system that automatically valued the value of content, counting and weighting the links pointing to the information, making a potential micropayment system for publications easier. Instead, the network developed differently: single-way.
