An addendum to my Magic in HCI bibliography of a couple days ago:
The list of references attempted to identify sources of discussion of magic as a metaphor for ubiquitous computing, but I decided to include some older sources which were written before the possibility, and language, of ubicomp became available (i.e. before the mid-90s). Most of these deal with "cyberspace" and are some of the core sources in discussions of virtual reality. I believe that they are relevant here because physical information processing objects in the ubicomp world are projections into the physical world of digital services. The older "cyberspace" literature envisions a virtual world of objects that represent things in the real world. One of my points, and certainly Weiser's point in referring to ubicomp as the opposite of virtual reality, is that with ubicomp objects there is less need for there to be a virtual world, the real world can manifest the same magical properties envisioned by the older cyberspace science fiction and theory.