From Xerox PARC to the World Wide Web:
The internet did not use a visual spatial metaphor. Despite being accessed through and often encompassed by the desktop environment, the internet felt well and truly placeless (or perhaps everywhere). Hyperlinks were wormholes through the spatial metaphor, allowing a user to skip laterally across directories stored on disparate servers, as well as horizontally, deep into a file system without having to access the intermediate steps. Multiple windows could be open to the same website at once, shattering the illusion of a “single file” that functioned as a piece of paper that only one person could hold. The icons that a user could arrange on the desktop didn’t have a parallel in online space at all.