Brain mapping is there for the benefit of human,

Despite of the novel idea about brain mapping, there is a controversial debate about whether its purpose is for human welfare. And if I were a researcher, I would prepare myself to the challenges in applying and developing this project.
First of all, some people think that it is unfair to judge people basing on what has not happened. I totally agree with it. Actually, our behavior is the result of both the gene structure and its interaction with the environment. So is our thinking. It is the result of our personality and the impact other people make on us. Therefore, everything can be changed basing on the surrounding environment we are living. However, it is not true to say that brain mapping is meaningless. In fact, brain mapping gives us a chance to get a draft idea about people, so that we will be well-prepared. Imagine how good it is if we were employers and we knew the strengths and weaknesses of our employees even when we have not hired them. We could give them opportunity to improve their talents as well as prevent things that disturb them. Therefore, getting a draft idea about the character and the thought of people is really helpful.
Second, people may think that it is unsafe to let others know their thought. I also agree with it. That is why we should never talk to others whatever we are thinking about before considering it properly. However, it is the use of this technology that is the problem. And it all comes from human. Every technology is for the human welfare, but the way people use it makes it evil or not. The invention of nuclear power is a good example. Back to our problem, brain mapping is an amazing project opening a new era of understanding people, especially in investigating crimes and terrorism. If we use this novel technique correctly, it will have a great contribution to human benefit.
In conclusion, brain mapping gives us a chance to know people better and therefore to help each other. Of course, we have to be careful in applying this project to make sure that its purpose is human welfare.