Its great to see so many new approaches. I'm the last person to know which will catch on, but with all this variety we're likely to converge on the right device

Its great to see so many new approaches. I'm the last person to know which will catch on, but with all this variety we're likely to converge on the right device. The expensive lesson of the Segway: people don't want to look like a dork. It's hard to quantify exactly but only mall cops look natural on a Segway.