About 20 years ago, born was the first cloned animal dolly and perhaps our science is now able to make a human clone. Human clones could used in a variety of ways, for example, curing infertility, functioniing spare parts for the hurted organs, and assisting medical research. However, the news that human clones are actually made has never been heard. Why the conclusion is not drawn although there have been such an large number of debates about whether the human cloning is ethical or not and the uses of technology. It is also true that the technology has some advantages, this is because human cloning technology has so many defects such as low success rates, abuse of technology, and unsolved ethical problems that human being can not afford. Also, having unimaginable side effects or defects, human cloning must be prohibited. “It 's perfectly clear that if cloning works in every other mammal in which it 's been tried, it will work in human beings (NOVA Online | 18 Ways to Make a Baby | On Human Cloning: Lee Silver, no date).” This simple point of view that the success rates of human cloning and animal cloning is almost equal because they are same ‘living creatures’ is normally accepted by almost everyone. In this point of view, people might have hope about cloning as they think they know some success case such as Dolly. However, including Dolly, “some clones have inherent disorder such as defective hearts, lung problems, diabetes, blood vessel complications and malfunctioning