rachel: irobot makes the roomba, the robotic vacuum cleaner. sam: they do, and that is still their most famous robot, but irobot also makes robots for the military, the police. robots that will go anywhere you do not want to be or cannot be. ♪ >> so much has been done in hollywood around how robots will impact our lives. we set off to figure out what is keeping us from having the robots that we all dreamed of, and it has been an amazing journey. one of the exciting applications for robotics is to allow people to actually physically be somewhere they're not. if i could attend a meeting, if i could diagnose a patient from my office as opposed to having to travel, then the world would be a different place. sam: since you have started in the boston area, there have been many more robotics companies that have taken hold here, some of which actually come out of your company, is that correct? >> absolutely. boston has become the center of the universe from the perspective of practical mobile robotics. there is no better place in the world to start a r