Why do people useba computer to control a robot?

A robot can not think or do things alone . People use a computer to control it .Today , robots are not very popular because they are too expensive ,but they are very useful .They can help us save a lot of time and work . A robot can do the same work for 24 hours , and yet , it does not complain or get tired . In the US , people use robots to guard some important places . There robots can listen to certain noises and send signals for help if there's trouble or danger.In Japan , people use robots in factories to build cars .In the future , scientists will design many types of intelligent robots . Thier robots will be able to do many more complicated things .However , some people do not like robots . They fear that one day robots will be too powerful.

1.Why do people useba computer to control a robot?

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2.What can a robot help us?

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3.Are robots cheap or expensive ?

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4.Can a robot do the same work for a long time in a day?
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5.Do all people like robots? why?/why not?
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