I believe one day nano-robots will play an important role in medicine.

One of the big things coming out of healthcare reform is a thing called the Community Living Assistance Services and Supports Act (CLASS) which is a mechanism to reimburse people staying at home for technology and services that allow them to stay at home.

That's exciting because to create new value in the robot space quickly, you need to stand on the shoulders of other technological developments.

In the original 'Star Wars' movie, there is a small toaster-sized and shaped robot on the Death Star that guides Stormtroopers to where they need to go. I always liked that robot because I could imagine how to build it - and it served a real purpose.

When we built Roomba, we explicitly designed it to not have a face. We didn't want to think it was cute, we wanted people to take it seriously so we gave it more of an industrial look. People personified their Roomba anyway. Over 80 percent of people name their robot. We did nothing to encourage people to do that but they do it anyway.

I think, people are generally willing to imagine robots of all shapes, as humanoid robots are not practical.

In the end, robots do things that people can do. So there is a cost above which you can hire somebody to do it, and that bounds the opportunity.