Building robot versions of people is very expensive.

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

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

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

At the World Cup, there is a constant risk that you might find a bag or some object that has been left behind, and no one is quite sure what it is. To bring in a full bomb-disposal team for each item can be very time-consuming. The PackBot can go over rough terrain, climb stairs, pick things up, and also be operated from a safe distance.

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 way that the robotics market is going to grow, at least in the home, is that we'll have a number of different special purpose robots.