What he did is very impressive, and I understand he was attempting to replicate what appeared in the Project Glass video, but why does all the graphical interaction have to obscure the user's vision (for Project Glass and his live demo)? The icons layout horizontally too close to the center of your view. If the whole point is to have this augmented experience, the user still needs to have a mostly unobstructed view o…
I also don't think the representation in the Glass demo video is accurate: I'd expect the images it projects to add to the background rather than replace it entirely. I don't think they could make an "opaque" projection if they wanted to.