Yeah, but will it save my arms?

I have long had problems with my arms--as mentioned previously--namely an RSI problem. I should probably be resting my arms right now (I'm officially grading papers online fulltime right now) but before I do, look at the latest MAC toy:

I was a serious naysayer when it came to the iPhone--I thought it was the technological equivalent of Beck (enuff said). But I was really hoping for the new wave of interfaces to address the concerns of my lame-ass, inflamed tendons. Questions, concerns still loom, but I'm optimistic.

h/t zentrout