In the beginning of Roomba, we all took turns answering the support line. Once, a woman called and explained that her robot had a defective motor. I said, 'Send it back. We'll send you a new one.' She said, 'No - I'm not sending you Rosie.'

When I was building robots in the early 1990s, the problems of voice recognition, image understanding, VOIP, even touchscreen technologies - these were robotics problems.

In the beginning of Roomba, we all took turns answering the support line. Once, a woman called and explained that her robot had a defective motor. I said, 'Send it back. We'll send you a new one.' She said, 'No - I'm not sending you Rosie.'

The answer is navigation, manipulation, and implementation of more sophisticated intelligence. The idea that a robot will become more aware of its environment, that telling it to "go to the kitchen" means something - navigation and understanding of the environment is a robot problem. Those are the technological frontiers of the robotics industry.

The ideal vacuum cleaner would be one you never see. It needs to not just be a cool gadget, but a product that cleans your floor correctly. I can imagine people having a cupboard full of robots that only come out when you need them to fulfil a specific purpose.

I was focused on building things from an early age. When I was about 3, our toilet broke, and my mother was ready to call the plumber. I told her I would fix it and asked her to get my Richard Scarry book 'How Things Work in Busytown.' Between the picture of a toilet and the text she read to me explaining how the parts worked, I fixed it.

"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.