Robotics

A "robot" is a machine that's designed by humans to do a specific job. And the scientists who design and build robots are called "roboticists". Robots do job that people can't do or don't want to do. Like if the job is boring, if it involves doing the same thing over and over or if a job is very dangerous and it means going places where people could get hurt, then robots are used, to do that job. Basically, robot is any automatically operated machine that replaces human effort, though it may resemble humans in appearance or perform functions like humans.