> It wasn't until the smaller, cheaper cell phones of the 90s that everybody had one.
Why think that was about the size and not more about the price? Every kid I knew who watched Saved by the Bell wanted a mobile phone, they just weren't in the "get it for Xmas or birthday" price range.
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.