In the last few years, robots have been an increasing help to people. They have the ability to go where people can not, and do not dare to go. Some main examples of the use of robots are the recent mars explorers that have been sent to mars for scientific reasons, and use of robots in areas where explosives are in use. There has even been an increase of robotics for around the house, including an automated lawnmower and vacuum cleaner.
The main factor in robotics is the mobility factor, and getting the robot to navigate foreign objects.