How data mining works and why you should be careful about it. Because when we think of how we use data, it's very important to know about its performance. No data mining When you tell someone something about yourself, he only knows the same things about you that you told him. But with data mining, in addition to the things you've told him, he will also be famous for the things you think and desire. In fact, data mining allows companies and governments to disclose their thoughts based on the information they receive.