Robots have the potential to solve big problems. They already assemble cars and explore planets far away, but they are usually kept away from humans. What stops a robot from helping you clean your dishes or carry the moving boxes?

One answer is that they do not fully understand their surroundings and can potentially be harmful and unsafe to be around. Usually dependent on a single vision system, they do not know where you are, which makes their movements potentially harmful and also means they cannot respond to human input such as touch.