Some people think today that Artificial Intelligence will scar society or eventually take over the human race, but these are very fictional ideas. Artificial Intelligence, or the ability for a robot to learn by itself, depends on constant analyzing of its environment and learning from encounters. Once this has been achieved, in an essence, robots will be equivalent to humans. The VALUE of this, however, is ever cognizant. Think about machinery in a way that enables robots to do work. With thousands of robots, equivalent to humans, much more work can get done than with only humans. In addition, robots would be able to think by themselves and innovate new ideas and concepts by themselves. This will ADVANCE the human society much quicker. This way, humans can reach new bounds of intelligence, possibly breaking artificial intelligence and going on to how humans can control the weather.
Many of these ideas are unheard of, but it is definitely possible for one to control the world if we have gone from playing with fire to creating sophisticated robots. What will not happen, though, is robots taking over the world, as long as our scientific community continues to grow.