Google may be able to improve on most of these problems, but they won't be able to eliminate the headaches unless they fundamentally alter the design. The prob

Google may be able to improve on most of these problems, but they won't be able to eliminate the headaches unless they fundamentally alter the design. The problem is that this type of display requires the wearer to change focus when using it. Enough of that activity is going to become literally nauseating after a while. For AR to really work the display needs to remain in focus no matter what the wearer is looking at, and that means an Eyetap-like design.