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A robot is an intelligent and obedient, but impersonal machine. It is also a machine that does work on its own, automatically, after it is programmed by humans. 9/10 robots in existence today are Industrial Robots. This means that robots are working for people everywhere in factories, laboratories, warehouses, energy plants, hospitals, and many other industries. Several years ago, the majority (90%) of robots that "worked" were used in car manufacturing companies. These robots worked on assembly lines doing a variety of tasks. Now, only half the robots in the world are busy building cars. The other half are spread out among the other industries listed above.

The hardest thing for a robot to do is to walk. This is hard for the creators of the robot as well, since the act of walking involves hundreds of specific motions. Also, a large part of walking time is spent on one leg, so it is important for the robot to have good balance, just like a child learning to walk! Some real robots must walk on uneven surfaces, like the surface of Mars, so these robots need sensors in their legs to find good footholds!

There are many benefits to using robots instead of humans. Can you imagine working in a factory all day, every day, doing the exact same thing over and over again? The good thing about robots is that they will never get bored, and they will do things more efficiently than people. Also, robots never get sick, or need to rest. This means they can work for 24 hours a day, 7 days a week. They will never need time off, or lunch breaks. Sometimes, when a task is too dangerous or difficult for a human, a robot will be able to do it without any risks or problems. Some interesting places robots have travelled include space, the depths of the ocean, inside volcanoes, into buildings containing bombs, and others. Robots are sent out when the "mission" may be too dangerous for a human. Robots are regularly used by police forces around the world to disarm bombs, and by...
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