It's not just a design problem. It's a weirding-people-out problem.
The father of the Nest and iPod, Tony Fadell, has taken over the Google Glass project. And to make Google Glass succeed, he needs to take one radical first step: Fadell needs to rip out Glass's camera. Because Glass isn't just a technology problem, and it isn't just a fashion problem. It's a social problem. Glass is freaking people out. And in case it isn't clear, it's freaking people out because it's pointing a camera in their faces.