Robots are very important in our daily life now. People like robots because they can do things for us. They can do housework. They can deal with data (处理数据) fast. Some people think robots can do everything nicely. But some things that are easy for us are difficult for robots. For example, robots have difficulty picking up things. This may make you feel surprised because even babies can pick up things easily. That's because our brains tell us how to use our hands to hold things. But robots can't understand these kinds of things. So they often break or drop things.
Many scientists are trying to deal with this problem. Among them is Ken Goldberg from the University of California, Berkeley, the US. He has studied the problem for years. Finally, he came up with an answer to the question. He built a database for robots. All kinds of information about a thing, such as its size and shape, are in the database. Before a robot picks up a thing, it can find the information about the thing. In this way, the robot can pick up the thing easily.
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