Hollywood likes to imagine robots as mechanical copies of ourselves - which is a terrible idea.

There are so many opportunities to make a bad decision in building a robot company on top of all the normal ways that entrepreneurs screw up that it is incredibly difficult to truly create value because it is so cost-sensitive.

"Star Wars" was the right movie for me. I watched the MSE-6 droid leading the stormtroopers where they needed to go when they were under attack, and that got my attention much more so than C-3PO and R2-D2 because we could actually build that.

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 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.

Building robot versions of people is very expensive.