I was thinking the same just based on the repeated "there is nothing like this being developed", which I may have believed if I didn't come across Oculus Rift just a few hours prior.
I was thinking the same just based on the repeated "there is nothing like this being developed", which I may have believed if I didn't come across Oculus Rift just a few hours prior.
The difference in experience is for VR, the whole world lags so an added object will always be at the right place. With hard AR, the added object will be trying to catch up as the image moves.
From what I gather on google glass, they mostly aim for soft AR. This is where you add information on top of the real world but it doesn't map directly to a location in the real world: if you move your head, the added image stays the same. This is much more resistant to delays and could be useable for extended periods of time without discomfort.
For a better and more technical writeup:
http://blogs.valvesoftware.com/abrash/why-you-wont-see-hard-...
Maybe it's meant to include themselves?