"Hello. I'm your clone, and I am borned to support your organs in case you would need it". How would you feel if your clone walks in front of you, and says this? I would be scared, and I'm very sure that I will feel strong repulsion. I'm also sure that most of people wouldn't be much different from me in this case. These days, technology aren't the biggest problem. Rather, ethics are more of an issue. Some people worrys about mechanics taking humans over due to advance of computer, and some worry about violating the sanctity of life. However, I want to make my stand to those people - ethical issues, especially religious issues, shouldn't be keeping science away from advancing. First of all, unlike how popular science fiction movies , such as terminator and matrix, there is no probability if mechanics will take humans over. All machines are actually programmed by humans, and they can't perform other actions than following the program. Even artificial intelligence programs are all human-programmed, and it is impossible for computers to be like human unless something very extraordinary happens. There is no need to worry about this kind of problem. It is much more less likely to get stroke by lightning. However, the major concern usually arises from life science. It is very common that life science is mentioned when we talk about conflict between ethics and science. What people most worries about is that science might violate sanctity of life, due to it's possiblity of making clones of human. Although I admit that there surely are possibilities of life science being abused, yet I want to assert that science is always value-neutral. You can't say that invention of nuclear created nuclear bombs thus they are bad. People who decided to make, and launch the nuclear bomb, is bad. Same refers to life science. Human's aren't the only problem. Another argue comes from animal protection groups. From my point of view, they bascially oppose because researching process in life science inevitabley causes some animal death. I also have to admit this, but sadly, there always has been some animal deaths while science technology develops. Even before the industrial revolution, we used cows to farm, and ever since humans started to research medicines, we used animals for experimental purpose. Many of people in South Korea loves meat, and there's noone who does not know where it comes from. In short, computer's won't take humans over. Development of life science might cause serious ethic issues, but that does not mean it is science's fault. Even though animals seems like they are suffering too much, sadly, that's how human race survived, and became one of the dominating race in earth. In addition, there is at least one important thing we can expect when we accomplish development in sciences : we will be able to save many people who suffer from incurable disease, and one of them might be our close relatives.