Another advantage Google Glasses may have: taking us out of a world of screens and little boxes, and into a world where the technology around us is near invisible (beyond the geek-hipster frames sitting on your face).
These two excellent new books provide ample evidence of the chief benefits of such technology: man's ever-improving knowledge of such invisible nasties as viruses has debunked ignorant superstitions and eased the suffering of countless unfortunates.
The hinge technology will have to be an engineering marvel, and making the folding crease of the screen invisible will pose problems in materials, optics, and touch technologies.
Technology gives a name and a face a true identity to those who were previously invisible, and it turns up the volume on voices that may have otherwise been too soft to hear.