And that would distinguish it from other operating systems in what ways? Users of other operating systems are often not doing much more in their daily activiti

And that would distinguish it from other operating systems in what ways? Users of other operating systems are often not doing much more in their daily activities, and recent OS updates tend to support that more and more (OS X's notifications, Windows start screen and metro apps etc.) Apart from that, what does centering on messaging/browsing take away from e.g. word processing or other office uses? Or how is multiplexing browser views inherently different from multiplexing terminal windows? I'm not saying that I'm particularly fond of the way Android does things, but I don't think its focus is to blame for that.