The Meta Ray-Ban Display

I read a New York Times article reviewing the Meta Ray-Ban Display smart glasses. The article is being negative, partially due to the fact that a few days ago there was a live demonstration where, unfortunately, not everything went according to plan. But it's interesting that Meta risked such a demonstration with the attendant dangers of glitches and bugs manifesting themselves. Indeed, this suggests to me that such glitches are relatively uncommon in these glasses, otherwise why risk it?

I confess I have no experience with smart glasses, nor virtual reality, nor augmented reality. Nor do I even use smartphones very much (mainly I use mine for phone calls and as a torch!) However, from my reading, these glasses seem to be a game-changer. Yes, there will be glitches and bugs, which might be expected with new technology.  So this failure of the live demonstration is not as big a deal as people are suggesting. 

Anyway, they have a hell of a lot of potential when the technology is refined and becomes cheaper.  They might even supplant smartphones! It may not be these glasses that become a runaway success, but something similar to them is likely to be.