This document summarizes and critiques the dominant vision of ubiquitous computing that has guided research since its inception. It makes three key points:
1) Ubiquitous computing's focus on an imminent future blinds it to current practice and renders problems of the present irrelevant. However, ubiquitous computing is already here in unexpected forms.
2) Framing research in terms of future possibilities allows problems to be postponed and responsibility deferred. A "ubiquitous computing of the present" is needed.
3) Future visions promote homogeneity, ignoring the messiness of everyday life. Aligning technology with social realities should be a central research focus.
The document illustrates these points through case studies