Are robots good or not?

In reading passage: a "positive" thinking No emotional or effect Recognizing system Lower cost than human labors In listening dialogue: a "negtive" opinon Robots can only work in a perfect environment,and they might spend a long time finishing their tasks. Robots cannot be our friends since they are just a computer on wheel. Even though robots could act as a real person,many people would not acceptthem since people are not readiy to handle machines with artifitial intelligence. In the listening passage,the professor disagree the point that robot's development will benefit human beings' life.He support this opinion by three reasons.I will mention all of them in next paragraphs. First of all,he thinks the robots is just the expensive toy of the rich guy,and they can only work in a perfect place.Any enviromental trouble will cut off their working efficiency,such as the stairs or furniture.This point against the the point of reading passage that human can count ...