"People said the same thing about the huge, bulky cell phones that came out in the 1980s."

And, I can count the number of people I knew with those early, bulky cell phones on my fingers and toes. It wasn't until the smaller, cheaper cell phones of the 90s that everybody had one.

Will Google Glass lead to something useful? Perhaps. But, will it be a game-changer today? I doubt it.

And he's correct about speech interfaces. So far, all of the readily available consumer versions are horrible.