In his cult classic Neuromancer (1984), William Gibson described a nervous system-like computer network called "cyberspace". Gibson's portrayal of this cybernetic world predicts an ultimate human-machine symbiosis, a plane on which human, machine, and mathematics meet sometime in the future:
Cyberspace. A consensual hallucination experienced daily by billions of legitimate operators, in every nation, by children being taught mathematical concepts. . . . A graphical representation of data abstracted from the banks of every computer in the human system. Unthinkable complexity. . . .
Vernor Vinge also wrote of an immersive interface to a worldwide network with unthinkable complexity in the 1980 novella "True Names", but didn't have Gibson's dark attitude and cyber- prefixing.