From NY Times. I do not mean this to be an ad (even though I am an admirer of Apple's approach to extending our cognition via technology). And I will not go get one - yet - they are just too expensive. But it seems to me that the reviewer is right - the watch is the first step in a new wave of technology that integrates human biology and digital computation. So they will become better and less expensive. Check out the video - it really is interesting.
Oh, yes. I suspect most of my readers are old enough to have read the Dick Tracy comic strip. Remember his wrist radio? If not, you know about the Star Trek communicator. Those devices are just around the corner and Apple is leading the way.