http://www.theatlantic.com/technology/archive/2011/10/for-some-strange-reason-i-want-to-talk-to-my-ipad/246130/

I have headphones at work, which I use for the express purpose of filtering out the sounds of my coworkers, and the sound of them talking to each other is distracting enough. Voice control makes all the sense in a car, but on a tablet?