I think the real "unspoken" genius of the iPad is that Apple is creating the most intuitive, most user-centered, most human user interface we've ever known -- our hands!  The iPhone trained us to use our fingers to control media -- think about it, we never flipped or pinched before the iPhone (you know what I mean!).  Scrolling took on a whole new meaning.  What the iPad is sure to create is a new user interface where the screen and all media are literally, in our hands.  Who knows what kinds of applications can be created when keyboards and mice disappear...and everything we do is with gestures...soon to be eye, thought, motion gestures!