Using the Pen in the Hand Is a Higher Bandwidth Modality

I've always loved the idea of being able to use both hands at the same time. It just turns out to be quite a pain in the butt to do. I think it's critical that you have the visual feedback, right? As you move the pen along the screen, something is happening on the screen at the location where the pen is. And so that's one of the reasons we like tablets. Another is the portability.