Second: Glass isn't just any GoogleX project. It's the most publicized and most heavily bought into except perhaps the automatic car. Large investors may well expect Google to chase some dead-ends, but to kill them before they get to the prominence and public stature of Glass.
There are plenty of other reasons why Google might save face on Glass -- there might be internal morale reasons or the pride of an executive or wanting to keep competitors guessing.
Google didn't make glass the most publicized product, the media did.
I believe I read a comment here that basically said that Google didn't kill glass, they stopped selling it and moved the work to another division. So I think you could debate forever about whether this is considered "killing" google glass or not, but that's neither here nor there.
Second: Glass isn't just any GoogleX project. It's the most publicized and most heavily bought into except perhaps the automatic car. Large investors may well expect Google to chase some dead-ends, but to kill them before they get to the prominence and public stature of Glass.
There are plenty of other reasons why Google might save face on Glass -- there might be internal morale reasons or the pride of an executive or wanting to keep competitors guessing.