> Many were using their cellphones while wearing the glasses — defeating a declared purpose of the new gadget, to free you from having to look at your phone. Another man continually looked at his watch to check the time, even through the glasses display a clock right above your eye.

I get that the author is trying to be humorous but I fear that some people may take some of his criticisms seriously. AFAIK nobody has declared that the purpose of Glass is to "free us from having to look at [oure] phone[s]". It simply makes certain functions more convenient than using a phone, in certain situations. Let's also not forget that Glass' functionality is pretty limited at this point, so people using their phones while using Glass were most likely using an app with functionality that isn't offered by Glass yet.. like browsing the web.

Glass is going to take off with the active crowd. It's perfect for people who either have jobs or hobbies that require the extended use of their hands. Think cyclists, police officers, postal workers, construction foremen, taxi drivers, etc. I feel like it's journalistically sloppy to criticize Glass for the (I feel) false premise that everybody is going to be wearing Glass all the time. The OP was at Google IO for crying out loud, of course you're going to have a bunch of early adopters walking around with Glass' on their face.