Wow, some of you people are just ridiculous.
First let me start by saying this is not something new - SHOCKER - !!!
There have been many HUD type devices for the past many decades. In fact, though you will hate hearing this, Apple had a HUD prototype for the Newton Message pads back in the 1990's. Yes, they really did. The testing showed a number of people could not multi-task with a HUD and it was causing disorientation and headaches.
Second. The military has been using various HUDs forever. Various sizes and shapes. One thing to note is that for many decades there was a requirement to have a specific vision level before you could become a jet fighter pilot. This still persists to this day, google it if you need to (pun intended). There are many reasons for this, including being able to tolerate the HUD and terrain during high stress combat manoeuvres.
This is to illustrate that for decades the human body has tried to deal with this type/style of technology to varying degrees of success.
Third: If the high end techies and early adopters show us how great it is then it will ride a wave of the masses following. What a crock of shit of a statement that is. It is exactly what the term "niche" defines. It will definitely have some uses, but as for mass adoption that is something that is to be seen. I personally do not think it will take on to a great extent. Could be wrong though.
Fourth: This really is a good attempt to advance the existing technology that Google did not pioneer nor create. I am impressed they have gotten it to this stage and based on the tech alone it is quite good. It is not for me, but soldier on Google.
Fifth: Privacy. We are all delusional in thinking that we will have or maintain our existing levels of privacy. Each and every day we sign or agree to more and more that rips away our rights and freedoms. Apparently we are too stupid collectively to see it. In fact, most of us don't seem to care and are at the point where convenience outweighs even of the thought of retaining privacy.
I think Glass will fail under the in your face level of not being able to control our privacy, but that over time some new device or tech will override those fears, or make it that we don't even know we lost it.
There are so many more idiotic comments to make fun of, but I have to go make love to my wife instead of this. Be back later....