If it is now easier and quicker to do an internal cavity x-ray, I'm afraid that there will be many more internal cavity x-rays.
In addition to my bifocals, I also have a pair of "computer" glasses. These have a single prescription focused slightly farther than reading glasses. When working on a computer with two monitors, these allow me to just move my eyes to look at different parts of the screen. With bifocals, I have to move my entire head, which is highly annoying.
If the emPower! glasses could change the whole lens, I could manually turn them on and work on the computer with my head up. When not on the computer, I could turn them off and let the accelerometer select far/near focus based on my head being up/down.
Being ignorant of texting and choosing not to use texting are two very different things.
I personally believe that most adults are far too busy (unfortunately), for the mindless chatter that makes up a large porting of texting. Those adults who need to use texting, simply use it less than teenagers. Those who don't need it, use another form of communications: voice, email, IM, etc.
or use email, if async comms is desired?
Maybe Apple should ban the phone application in the iPhone since users are currently able to communicate bad words.
That reminds me of something I heard way back when they allowed smoking on airlines.
"Having a smoking section in a plane is like having a peeing section in a pool."