Thirty years ago, a person who thought about robots would probably never have guessed that robot technology would be so pervasive today. A 19 year-old author named Isaac Asimov, who in 1939 started writing science fiction about humanoid robots, inspired some of the first popular notions about robots. Before him it was Karel Capek, a Czech playwright, who coined the word 'robot' in his 1921 play 'R.U.R.' Today, robots are doing human labor in all kinds of places, for example they are doing the jobs that are unhealthy or impractical for people. This frees up workers to do the more skilled jobs, including the programming, maintenance and operation of robots.The dangers lie in a nuclear war.

yes, the increase of price of batteries.