Just as you cannot penetrate two women at once, you also cannot do two things at once. I see the future as single tasking, and Apple designers should strive to make the iPad even more single task focused, multitasking on the iPad is a bad concept.
In fact, I have discovered my greatest productivity gains through the art of single tasking. That is, I just doing one thing at a time, I am more focused, I produce more, I make more, and I’m also happier.